阅读说明：本技术 金属基复合件及其制造方法、终端壳体 (Metal matrix composite part, manufacturing method thereof and terminal shell ) 是由 刘兵 于 2019-10-16 设计创作，主要内容包括：本公开提供了一种金属基复合件及其制造方法、终端壳体。金属基复合件的制造方法包括：获取复合金属基体,包括连接的第一金属基体和第二金属基体,第一金属基体与第二金属基体的材料不同。将复合金属基体置于酸性溶液中,同时对第一金属基体和第二金属基体分别施加不同的电压,使第一金属基体的表面形成第一纳米孔,以及使第二金属基体的表面形成第二纳米孔。将非金属材料注塑于第一纳米孔及第二纳米孔中,得到金属基复合件。该制造方法能够同步对包括至少两种金属基体的复合金属基体进行纳米孔处理,操作简单,利于节省制造成本。(The disclosure provides a metal matrix composite, a manufacturing method thereof and a terminal shell. The method of making a metal matrix composite includes: and obtaining a composite metal matrix which comprises a first metal matrix and a second metal matrix which are connected, wherein the first metal matrix and the second metal matrix are made of different materials. And placing the composite metal matrix in an acid solution, and simultaneously applying different voltages to the first metal matrix and the second metal matrix respectively to form a first nano hole on the surface of the first metal matrix and a second nano hole on the surface of the second metal matrix. And injecting the non-metal material into the first nanopore and the second nanopore to obtain the metal matrix composite. The manufacturing method can synchronously carry out nano-pore treatment on the composite metal matrix comprising at least two metal matrixes, is simple to operate and is beneficial to saving the manufacturing cost.)

1. A method of manufacturing a metal matrix composite, the method comprising:

obtaining a composite metal matrix, which comprises a first metal matrix and a second metal matrix which are connected, wherein the first metal matrix and the second metal matrix are made of different materials;

placing the composite metal matrix in an acid solution, and simultaneously applying different voltages to the first metal matrix and the second metal matrix respectively to form a first nanopore on the surface of the first metal matrix and a second nanopore on the surface of the second metal matrix;

and injecting a non-metal material into the first nanopore and the second nanopore to obtain the metal matrix composite.

2. The method of manufacturing according to claim 1, wherein an electrical conductivity of the first metal matrix is smaller than an electrical conductivity of the second metal matrix, and the simultaneously applying different voltages to the first metal matrix and the second metal matrix, respectively, comprises:

applying a first voltage to the first metal matrix while applying a second voltage to the second metal matrix, the first voltage being greater than the second voltage.

3. The manufacturing method according to claim 2, wherein the first voltage is in a range of 40V to 120V; the second voltage is in the range of 10V-30V.

4. The method of manufacturing according to claim 1, wherein the pore size range of the first nanopore is the same as the pore size range of the second nanopore.

5. The method of manufacturing according to claim 4, wherein the first nanopore has a pore size in a range of 30nm to 60 nm.

6. The manufacturing method according to claim 1, wherein the acidic solution includes at least one of hydrochloric acid, hydrofluoric acid, and an ammonium bifluoride solution; and/or

The composite metal matrix is placed in the acid solution for a treatment time ranging from 13min to 17min and a treatment temperature ranging from 57 ℃ to 63 ℃.

7. The method of manufacturing of claim 1, wherein the obtaining a composite metal matrix comprises:

obtaining the first metal matrix and the second metal matrix;

and connecting the first metal matrix and the second metal matrix through at least one of welding, riveting and binding to obtain the composite metal matrix.

8. The method of manufacturing of claim 1, wherein prior to placing the composite metal matrix in an acidic solution, the method of manufacturing further comprises:

carrying out degreasing treatment on the composite metal matrix;

and placing the composite metal matrix subjected to the degreasing treatment in an acid etching agent for acid etching treatment, so that a first basic nanopore is formed on the surface of the first metal matrix, and a second basic nanopore is formed on the surface of the second metal matrix, wherein the first nanopore is formed on the first basic nanopore, and the second nanopore is formed on the second basic nanopore.

9. The method of manufacturing of claim 1, wherein prior to injection molding the non-metallic material into the first and second nanopores, the method further comprises:

and cleaning the composite metal matrix with deionized water at 47-53 ℃ to form the first nanopore and the second nanopore, and drying.

10. The method of manufacturing of claim 1, wherein the first metal substrate comprises a titanium alloy or stainless steel and the second metal substrate comprises an aluminum alloy or stainless steel; and/or

The non-metallic material comprises at least one of plastic and glass.

11. A metal matrix composite article, wherein the metal matrix composite article is produced by the method of any one of claims 1 to 10.

12. A terminal housing comprising the metal matrix composite of claim 11.

Technical Field

The disclosure relates to the technical field of composite materials, in particular to a metal matrix composite part, a manufacturing method thereof and a terminal shell.

Background

The terminal housing made of a metal material can improve the aesthetic appearance of the terminal device, and in order to avoid the interference of the metal material with the radio frequency communication performance of the terminal device, a Nano Molding Technology (NMT) is usually adopted to fill a non-metal material in a specific position of the metal substrate, and the Nano Molding Technology can effectively increase the connection force between the metal substrate and the non-metal material. In order to pursue the aesthetic property of the terminal housing, etc., the terminal housing may be designed to include at least two metal substrates, but different metal substrates cannot be simultaneously processed using the nano-molding technique.

Disclosure of Invention

The present disclosure provides an improved metal matrix composite, method of making the same, and terminal housing.

One aspect of the present disclosure provides a method of manufacturing a metal matrix composite, the method of manufacturing comprising:

obtaining a composite metal matrix, which comprises a first metal matrix and a second metal matrix which are connected, wherein the first metal matrix and the second metal matrix are made of different materials;

placing the composite metal matrix in an acid solution, and simultaneously applying different voltages to the first metal matrix and the second metal matrix respectively to form a first nanopore on the surface of the first metal matrix and a second nanopore on the surface of the second metal matrix;

and injecting a non-metal material into the first nanopore and the second nanopore to obtain the metal matrix composite.

Optionally, the electrical conductivity of the first metal matrix is smaller than that of the second metal matrix, and the simultaneously applying different voltages to the first metal matrix and the second metal matrix respectively includes:

applying a first voltage to the first metal matrix while applying a second voltage to the second metal matrix, the first voltage being greater than the second voltage.

Optionally, the first voltage ranges from 40V to 120V; the second voltage is in the range of 10V-30V.

Optionally, the pore size range of the first nanopore is the same as the pore size range of the second nanopore.

Optionally, the first nanopore has a pore size in a range of 30nm to 60 nm.

Optionally, the acidic solution comprises at least one of hydrochloric acid, hydrofluoric acid, ammonium bifluoride solution; and/or

The composite metal matrix is placed in the acid solution for a treatment time ranging from 13min to 17min and a treatment temperature ranging from 57 ℃ to 63 ℃.

Optionally, the obtaining a composite metal matrix comprises:

obtaining the first metal matrix and the second metal matrix;

and connecting the first metal matrix and the second metal matrix through at least one of welding, riveting and binding to obtain the composite metal matrix.

Optionally, before placing the composite metal matrix in an acidic solution, the manufacturing method further comprises:

carrying out degreasing treatment on the composite metal matrix;

and placing the composite metal matrix subjected to the degreasing treatment in an acid etching agent for acid etching treatment, so that a first basic nanopore is formed on the surface of the first metal matrix, and a second basic nanopore is formed on the surface of the second metal matrix, wherein the first nanopore is formed on the first basic nanopore, and the second nanopore is formed on the second basic nanopore.

Optionally, before the non-metallic material is injected into the first nanopore and the second nanopore, the method further includes:

and cleaning the composite metal matrix with deionized water at 47-53 ℃ to form the first nanopore and the second nanopore, and drying.

Optionally, the first metal substrate comprises a titanium alloy or stainless steel and the second metal substrate comprises an aluminum alloy or stainless steel; and/or

The non-metallic material comprises at least one of plastic and glass.

Another aspect of the present disclosure provides a metal matrix composite manufactured by the method of manufacturing a metal matrix composite as described in any of the above-mentioned.

Another aspect of the present disclosure provides a terminal housing comprising the above-mentioned metal matrix composite.

The manufacturing method of the metal matrix composite part, the metal matrix composite part and the terminal shell provided by the embodiment of the disclosure have at least the following beneficial effects:

according to the manufacturing method of the metal matrix composite part, after the composite metal matrix is placed in the acid solution, different voltages are applied to the first metal matrix and the second metal matrix respectively, so that the first nano holes can be formed on the surface of the first metal matrix at the same time, the second nano holes can be formed on the surface of the second metal matrix, and the manufacturing method can be used for synchronously carrying out nano hole treatment on the composite metal matrix comprising at least two metal matrixes, is simple to operate and is beneficial to saving of manufacturing cost.

According to the metal matrix composite part and the terminal shell provided by the embodiment of the disclosure, the first nano hole is formed on the surface of the first metal substrate and the second nano hole is formed on the surface of the second metal substrate by the manufacturing method, so as to be firmly connected with the nonmetal material. In addition, the metal matrix composite part and the terminal shell can show the metal texture of the first metal matrix and the second metal matrix, and the visual experience of a user is improved.

Drawings

FIG. 1 illustrates a flow chart of a method of manufacturing a metal matrix composite part according to an exemplary embodiment of the present disclosure;

FIG. 2 illustrates a top view of a metal matrix composite shown in accordance with an exemplary embodiment of the present disclosure.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in the description and claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. Unless otherwise indicated, the word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprises" or "comprising" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

As used in this disclosure and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

At present, in order to meet the requirement of aesthetic appearance of the terminal housing, the terminal housing comprises two metal substrates, such as aluminum alloy and titanium alloy, aluminum alloy and stainless steel, stainless steel and titanium alloy, and the like. In addition, in order to meet the radio frequency communication performance of the terminal equipment, some parts of the metal base body need to be hollowed and filled with non-metal materials. In order to increase the bonding force between the metal substrate and the non-metal material, the metal substrate needs to be subjected to nano-molding. In some embodiments, in the nano-molding technique, the same metal substrate is subjected to T-treatment, B-treatment, C-treatment, HK-treatment, E-treatment, PMH-treatment, TRI-treatment, etc., to form nano-pores on the surface of the metal substrate. The treatment modes of T treatment, B treatment, C treatment, HK treatment, E treatment, PMH treatment and TRI treatment are different, and the treatment modes are respectively used for treating metal matrixes made of different materials. Then, by simultaneously processing at least two metal substrates connected together by any of the above-described processing methods, it is not easy to form nanopores on the surfaces of both the metal substrates.

In order to solve the above problem, an embodiment of the present disclosure provides a method for manufacturing a metal matrix composite, including: and obtaining a composite metal matrix which comprises a first metal matrix and a second metal matrix which are connected, wherein the first metal matrix and the second metal matrix are made of different materials. And placing the composite metal matrix in an acid solution, and simultaneously applying different voltages to the first metal matrix and the second metal matrix respectively to form a first nano hole on the surface of the first metal matrix and a second nano hole on the surface of the second metal matrix. And injecting the non-metal material into the first nanopore and the second nanopore to obtain the metal matrix composite.

According to the manufacturing method of the metal matrix composite part, after the composite metal matrix is placed in the acid solution, different voltages are applied to the first metal matrix and the second metal matrix respectively, so that the first nano holes can be formed on the surface of the first metal matrix at the same time, the second nano holes can be formed on the surface of the second metal matrix, and the manufacturing method can be used for synchronously carrying out nano hole treatment on the composite metal matrix comprising at least two metal matrixes, is simple to operate and is beneficial to saving of manufacturing cost.

Fig. 1 is a flow chart illustrating a method of manufacturing a metal matrix composite according to an exemplary embodiment of the present disclosure, the method of manufacturing including steps 101-103.

In step 101, a composite metal matrix is obtained, which includes a first metal matrix and a second metal matrix connected to each other, where the first metal matrix and the second metal matrix are made of different materials. Through the cooperation of first metal base body and second metal base body, make the combined metal spare can show different metal aesthetic feelings, do benefit to the visual experience that promotes the user.

In some embodiments, obtaining a composite metal matrix includes:

a first metal matrix and a second metal matrix are obtained. The first metal substrate may comprise a titanium alloy or stainless steel and the second metal substrate may comprise an aluminum alloy or stainless steel. The regions to be processed may be machined on the first metal substrate and the second metal substrate using Computer Numerical Control (CNC) according to design requirements, such as radio frequency design requirements of the terminal housing.

The first metal base may be joined to the second metal base by at least one of welding, riveting, and bonding to provide a composite metal base. These connection modes are simple, and the connection strength is strong. Illustratively, the first metal base includes a metal frame, the second metal base includes a metal plate, and the first metal base is welded to a peripheral edge of the second metal base. Illustratively, the first metal matrix and the second metal matrix are both sheet-shaped structures, and the first metal matrix and the second metal matrix are connected in a surface-to-surface welding mode. Illustratively, the first metal base is riveted to the second metal base by a rivet. In the disclosed embodiments, the number of the first metal matrix may be one or more, and the number of the second metal matrix may be one or more.

It should be noted that the composite metal matrix provided by the embodiments of the present disclosure including the first metal matrix and the second metal matrix is merely exemplary, and the embodiments of the present disclosure are applicable to manufacturing a metal matrix composite including at least two metal matrices.

In step 102, the composite metal matrix is placed in an acidic solution, and different voltages are applied to the first metal matrix and the second metal matrix respectively, so that a first nanopore is formed on the surface of the first metal matrix and a second nanopore is formed on the surface of the second metal matrix. In some embodiments, different voltages are applied to the first metal substrate and the second metal substrate in an acidic solution, so that the first metal substrate and the second metal substrate are subjected to electrochemical corrosion under different voltage conditions, and thus the first nanopore is formed on the surface of the first metal substrate and the second nanopore is formed on the surface of the second metal substrate.

In some embodiments, the acidic solution comprises at least one of hydrochloric acid, hydrofluoric acid, and an ammonium bifluoride solution. Illustratively, the acidic solution includes 3% to 30% by mass hydrochloric acid. Illustratively, the acidic solution includes 5% to 30% by mass of hydrofluoric acid. In some embodiments, the acidic solutions can efficiently perform electrochemical corrosion treatment on the first metal substrate and the second metal substrate to form the nanopore by matching with the applied voltage, thereby being beneficial to industrial production.

In some embodiments, the composite metal substrate is placed in the acidic solution for a treatment time in a range of 13min to 17min, such as 13min, 14min50s, 14min55s, 15min5s, 15min10s, 16min, 17min, etc., and a treatment temperature in a range of 57 ℃ to 63 ℃, such as 57 ℃, 58 ℃, 59 ℃, 60 ℃, 61 ℃, 62 ℃, 63 ℃, etc. It can be understood that the time range for applying the voltage to the composite metal substrate is also 13min to 17 min. In some embodiments, the processing time and the processing temperature can be used to form the first nanopores on the surface of the first metal substrate and the second nanopores on the surface of the second metal substrate while saving energy consumption.

In some embodiments, the first metal matrix has an electrical conductivity less than an electrical conductivity of the second metal matrix, and a first voltage is applied to the first metal matrix while a second voltage is applied to the second metal matrix, the first voltage being greater than the second voltage. In this way, the first nanopores can be formed on the surface of the first metal substrate having low conductivity. In some embodiments, the first voltage is in the range of 40V-120V, such as 40V, 45V, 50V, 55V, 60V, 65V, 70V, 75V, 80V, 85V, 90V, 95V, 100V, 105V, 110V, 115V, 120V, and the like. The second voltage is in the range of 10V-30V, such as 10V, 15V, 20V, 25V, 30V, etc. Thus, the pore diameter range of the first nanopore and the pore diameter range of the second nanopore are formed appropriately, and the first nanopore and the second nanopore can be firmly connected to a non-metal material.

In the embodiment of the present disclosure, the pore size range of the first nanopore and the pore size range of the second nanopore may be the same or different, and the first voltage and the second voltage may be adjusted according to actual design requirements. In some embodiments, the pore size range of the first nanopore is the same as the pore size range of the second nanopore. The first nanopore may have a pore size in the range of 30nm to 60nm, and the second nanopore may have a pore size in the range of 30nm to 60nm, such as 30nm, 35nm, 40nm, 45nm, 50nm, 55nm, 60nm, and the like. In some embodiments, the first and second nanopores of the above pore size range can effectively connect with the non-metallic material and provide an aesthetic appearance to the metal matrix composite.

In some embodiments, the first metal matrix comprises a titanium alloy and the first voltage is in a range of 40V to 120V. The second metal matrix comprises an aluminum alloy and the second voltage is in the range of 10V to 30V. Thus, the first nano-pores can be effectively formed on the surface of the titanium alloy, and the second nano-pores can be effectively formed on the surface of the aluminum alloy.

In step 103, a non-metal material is injected into the first nanopore and the second nanopore to obtain a metal matrix composite. It should be noted that, in the injection molding process, the surface of the first metal substrate where the first nano holes are located and the surface of the second metal substrate where the second nano holes are located are also connected to the non-metal material.

In an embodiment of the disclosure, the non-metallic material comprises at least one of plastic and glass. In some embodiments, the metal matrix composite has the characteristics of beauty, light weight, wear resistance, falling resistance and the like by matching the plastic and the glass with the composite metal matrix. Exemplary non-metallic materials include Polyphenylene Sulfide (PPS), Polyamide (PA, also known as nylon), Glass Fiber (GF), or Polybutylene Terephthalate (PBT). The non-metal materials can be effectively connected with the first nano hole and the second nano hole, so that the metal matrix composite can meet the radio frequency communication performance and has attractive appearance.

In some embodiments, prior to step 102, the method of manufacturing a metal matrix composite further comprises:

the composite metal matrix is soaked in a C-4000 degreasing agent at the temperature of 45-55 ℃ for 85-95 s, and then is washed at least twice by distilled water, and primary degreasing treatment is carried out to remove grease on the surface of the composite metal matrix.

And degreasing the composite metal matrix by using a degreasing agent again to remove dirt such as grease on the surface of the composite metal matrix. In some embodiments, the degreaser includes sodium hydroxide at a concentration ranging from 40g/L to 60g/L, for example, the concentration of sodium hydroxide may be 40g/L, 43g/L, 45g/L, 47g/L, 50g/L, 53g/L, 55g/L, 57g/L, 60g/L, etc. And then washing with clear water at least twice to wash away the sodium hydroxide attached to the surface of the composite metal substrate.

And placing the composite metal matrix subjected to degreasing treatment in an acid etching agent for acid etching treatment, so that a first basic nanopore is formed on the surface of the first metal matrix, and a second basic nanopore is formed on the surface of the second metal matrix, wherein the first nanopore is formed on the first basic nanopore, and the second nanopore is formed on the second basic nanopore. It should be noted that, in step 102, a first nanopore is formed by performing a hole expansion process on the first basic nanopore, and a second nanopore is formed by performing a hole expansion process on the second basic nanopore.

In some embodiments, the acid etchant includes nitric acid in a mass fraction range of 3% to 50% and hydrofluoric acid in a mass fraction range of 5% to 30%. For example, the mass fraction of nitric acid may be 3%, 8%, 10%, 15%, 18%, 20%, 25%, 28%, 30%, 35%, 38%, 40%, 45%, 48%, 50%, etc. The mass fraction of hydrofluoric acid may be 5%, 8%, 10%, 13%, 17%, 20%, 23%, 28%, 30%, etc. Thus, the alkaline substance and the oxide film on the surfaces of the first metal substrate and the second metal substrate can be effectively removed, the first basic nano-pores are formed on the surface of the first metal substrate, the second basic nano-pores are formed on the surface of the second metal substrate, and the acid etching agent is easy to obtain.

In some embodiments, the temperature of the acid etchant is 37 ℃ to 43 ℃, such as 37 ℃, 38 ℃, 39 ℃, 40 ℃, 41 ℃, 42 ℃, 43 ℃ and the like. In some embodiments, the composite metal substrate is treated in the acid etchant for 117s-123s, such as 117s, 119s, 120s, 123s, and the like. The temperature of the acid etching agent and the treatment time of the acid etching are set, so that the pore diameter range of the formed first basic nanopore and the second basic nanopore can be effectively controlled.

In some embodiments, the first base nanopore has a pore size in the range of 80nm to 100nm and the second base nanopore has a pore size in the range of 80nm to 100 nm. For example, the pore size of the first and second base nanopores may be 80nm, 83nm, 85nm, 87nm, 90nm, 93nm, 95nm, 97nm, 100nm, and the like.

In some embodiments, prior to step 103, the method of manufacturing a metal matrix composite further comprises:

and cleaning the composite metal matrix with deionized water at 47-53 ℃ to form a first nano hole and a second nano hole, and drying. Wherein the temperature of the deionized water can be 47 ℃, 48 ℃, 49 ℃, 50 ℃, 51 ℃, 52 ℃, 53 ℃ and the like. Therefore, acidic substances in the first nano hole and the second nano hole can be effectively cleaned, and firm connection of the non-metallic material and the first nano hole and the second nano hole is facilitated. In some embodiments, the composite metal substrate is cleaned for 25s-35s, such as 25s, 27s, 29s, 30s, 33s, 35s, and the like.

According to the manufacturing method of the metal matrix composite part, after the composite metal matrix is placed in the acid solution, different voltages are applied to the first metal matrix and the second metal matrix respectively, so that the first nano holes can be formed on the surface of the first metal matrix at the same time, the second nano holes can be formed on the surface of the second metal matrix, and the manufacturing method can be used for synchronously carrying out nano hole treatment on the composite metal matrix comprising at least two metal matrixes, is simple to operate and is beneficial to saving of manufacturing cost.

Some embodiments of the present disclosure also provide a metal matrix composite manufactured by any one of the above-mentioned methods of manufacturing a metal matrix composite.

FIG. 2 illustrates a top view of a metal matrix composite shown in accordance with an exemplary embodiment of the present disclosure. Referring to fig. 2, the metal matrix composite includes a first metal matrix 210, a second metal matrix 220, and a non-metal body 230. The surface of the first metal substrate 210 is formed with a first nano-hole, the surface of the second metal substrate 220 is formed with a second nano-hole, and the non-metal body 230 is formed by injecting a non-metal material into the first nano-hole and the second nano-hole. The non-metallic body 230 can be securely attached in the first nanopore and the second nanopore.

According to the metal matrix composite provided by the embodiment of the disclosure, the first metal matrix 210 has a first nano-hole formed on the surface thereof, the second metal matrix 220 has a second nano-hole formed on the surface thereof, and the first nano-hole and the second nano-hole are beneficial to the firm connection between the nonmetal body 230 and the composite metal matrix. The metal matrix composite is easy to manufacture, can show the metal texture of the first metal matrix 210 and the second metal matrix 220, and is beneficial to improving the visual experience of users. In addition, the metal composite part has the characteristics of light weight, wear resistance, falling resistance and the like by matching the composite metal matrix with the nonmetal body 230.

Some embodiments of the present disclosure also provide a terminal housing comprising or obtained by machining the above-mentioned metal matrix composite.

The terminal housing provided by the embodiment of the present disclosure includes but is not limited to: a housing of a cell phone, a housing of a tablet, a housing of an iPad, a housing of a digital broadcast terminal, a housing of a messaging device, a housing of a game console, a housing of a medical device, a housing of a fitness device, a housing of a personal digital assistant, a housing of a smart wearable device, a housing of a smart television, and so forth.

In some embodiments, the terminal housing includes a middle frame and an outer shell.

The terminal shell provided by the embodiment of the disclosure is characterized in that a first nano hole is formed on the surface of a first metal substrate, a second nano hole is formed on the surface of a second metal substrate, and the first nano hole and the second nano hole are beneficial to firm connection between a non-metal material and a composite metal substrate. And because this metal matrix composite includes first metal matrix and second metal matrix, this makes metal matrix composite can show different metallics feel, does benefit to and promotes user's visual experience. In addition, the terminal shell has the advantages of being light in weight, resistant to abrasion, resistant to falling and the like.

For the embodiments of the metal matrix composite, the terminal housing, since they correspond substantially to the embodiments of the manufacturing method, reference may be made to the partial description of the embodiments of the manufacturing method of the metal matrix composite in relation thereto. Embodiments of the metal matrix composite, the terminal housing, and the method of making the metal matrix composite complement one another.

The above embodiments of the present disclosure may be complementary to each other without conflict.

The above description is only exemplary of the present disclosure and should not be taken as limiting the disclosure, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.