阅读说明：本技术 一种陶瓷金属材料及其制备方法 (Ceramic metal material and preparation method thereof ) 是由 张超彦 张丽霞 于 2019-11-13 设计创作，主要内容包括：本发明公开了一种陶瓷金属材料,由以下重量份数的组分制成：TiC 40-60份、WC 10-20份、TaC 1-2份、Ni 10-20份、Ca 5-10份、Mo 3-5份、Sb 1-3份。本发明还提供了上述陶瓷金属材料的制备方法。本发明配方中的TaC在烧结时能抑制TiC晶粒长大,还能使金属陶瓷的抗拉强度增高而不至于断裂；Ca促进晶粒均匀生长,改变金属陶瓷中夹杂物的尺寸和分布,利于金属陶瓷中细小夹杂呈均匀弥撒分布,使金属陶瓷的组织更为均匀,强度更高；Mo、Sb均可提高Ni对硬质相的润湿性。本发明制备出的陶瓷金属材料强度高,拉伸强度和抗折强度好,具备广泛应用前景。(The invention discloses a ceramic metal material which is prepared from the following components in parts by weight: 40-60 parts of TiC, 10-20 parts of WC, 1-2 parts of TaC, 10-20 parts of Ni, 5-10 parts of Ca, 3-5 parts of Mo and 1-3 parts of Sb. The invention also provides a preparation method of the ceramic metal material. The TaC in the formula can inhibit the growth of TiC crystal grains during sintering, and can also increase the tensile strength of the metal ceramic without fracture; ca promotes the uniform growth of crystal grains, changes the size and distribution of impurities in the metal ceramic, is beneficial to the uniform dispersion and distribution of fine impurities in the metal ceramic, and ensures that the structure of the metal ceramic is more uniform and the strength is higher; both Mo and Sb can improve the wettability of Ni to the hard phase. The ceramic metal material prepared by the invention has high strength, good tensile strength and breaking strength, and wide application prospect.)

1. The ceramic metal material is characterized by being prepared from the following components in parts by weight: 40-60 parts of TiC, 10-20 parts of WC, 1-2 parts of TaC, 10-20 parts of Ni, 5-10 parts of Ca, 3-5 parts of Mo and 1-3 parts of Sb.

2. The ceramic-metal material as claimed in claim 1, characterized by being prepared from the following components in parts by weight: TiC50 parts, WC 15 parts, TaC1 parts, Ni15 parts, Ca5 parts, Mo 4 parts and Sb 2 parts.

3. The method for preparing a ceramic-metal material according to claim 1, comprising the steps of:

s1, weighing 40-60 parts of TiC, 10-20 parts of WC, 1-2 parts of TaC, 10-20 parts of Ni, 5-10 parts of Ca, 3-5 parts of Mo and 1-3 parts of Sb according to parts by weight;

s2, placing the raw materials weighed in the S1 into a ball mill for ball milling, and then sending the raw materials into a high-speed mixer for high-speed mixing to obtain mixed raw materials;

and S3, feeding the mixed raw material in the S2 into a high-temperature sintering furnace for vacuum high-temperature sintering to obtain the ceramic metal material.

4. The method for preparing a ceramic-metal material as claimed in claim 3, wherein the ball-to-material ratio in the ball milling in S2 is 35-45:1, the rotation speed of the ball mill is 250-350rpm, and the ball milling time is 2-3 h.

5. The method as claimed in claim 3, wherein the high speed mixer rotates at 150-250rpm when the ceramic-metal material is mixed at the high speed in S2.

6. The method as claimed in claim 3, wherein the sintering temperature is 1300-1500 ℃ and the sintering time is 3-4h during the high-temperature sintering in S3.

Technical Field

The invention belongs to the technical field of composite materials, and particularly relates to a ceramic metal material and a preparation method thereof.

Background

The metal ceramic is a composite material consisting of a ceramic hard phase and a metal or alloy binder phase, and has the characteristics of metal toughness, high thermal conductivity, good thermal stability, high temperature resistance, corrosion resistance, wear resistance and the like. Cermet materials composed of nitrides and other ceramic materials have low tensile strength and flexural strength, and the properties of the cermet materials need to be improved.

Disclosure of Invention

The invention provides a ceramic metal material and a preparation method thereof, which solve the problems in the prior art.

The first purpose of the invention is to provide a ceramic metal material which is prepared from the following components in parts by weight: TiC40-60 parts, WC 10-20 parts, TaC 1-2 parts, Ni 10-20 parts, Ca 5-10 parts, Mo3-5 parts and Sb 1-3 parts.

Preferably, the ceramic metal material is prepared from the following components in parts by weight: 50 parts of TiC, 15 parts of WC, 1 parts of TaC, 15 parts of Ni, 5 parts of Ca, 4 parts of Mo and 2 parts of Sb.

The second purpose of the invention is to provide a preparation method of the ceramic metal material, which comprises the following steps:

s1, weighing 40-60 parts of TiC, 10-20 parts of WC, 1-2 parts of TaC, 10-20 parts of Ni, 5-10 parts of Ca, 3-5 parts of Mo and 1-3 parts of Sb according to parts by weight;

s2, placing the raw materials weighed in the S1 into a ball mill for ball milling, and then sending the raw materials into a high-speed mixer for high-speed mixing to obtain mixed raw materials;

and S3, feeding the mixed raw material in the S2 into a high-temperature sintering furnace for vacuum high-temperature sintering to obtain the ceramic metal material.

Preferably, the ball-material ratio during ball milling in S2 is 35-45:1, the rotation speed of the ball mill is 250-350rpm, and the ball milling time is 2-3 h.

Preferably, the high speed mixer speed is 150 and 250rpm for high speed mixing in S2.

Preferably, the sintering temperature is 1300 ℃ to 1500 ℃ and the sintering time is 3-4h when the sintering is carried out at the high temperature in S3.

Compared with the prior art, the invention has the beneficial effects that:

the invention has provided a kind of ceramic metal material, TaC in the formulation is metallic cubic crystal powder, belong to the sodium chloride type cubic crystal system, have obvious effects to inhibit TiC crystalline grain from growing up while sintering, in addition, TaC has high melting point, high tensile strength, low thermal expansion rate, after it is introduced into formulation, the cermet is produced the shear stress on the interface of the two by the force that the basal body transmits to TaC while breaking, thus make the tensile strength of the cermet increase and will not break; proper amount of Ca can promote the uniform growth of crystal grains, change the size and distribution of impurities in the metal ceramic, and is beneficial to the uniform distribution of fine impurities in the metal ceramic, so that the structure of the metal ceramic is more uniform and the strength is higher; the Ca is matched with other elements such as Mo, Sb and the like for use, so that the weather resistance of the metal ceramic can be effectively improved, and the corrosion resistance of the metal ceramic under natural conditions is improved. Mo and Sb can improve the wettability of Ni to the hard phase, thereby improving the strength of the alloy, and Sb can also improve the red hardness of the alloy.

The ceramic metal material prepared by the invention has high strength, good tensile strength and breaking strength, and wide application prospect.

Detailed Description

In order to make the technical solutions of the present invention better understood and enable those skilled in the art to practice the present invention, the following embodiments are further described, but the present invention is not limited to the following embodiments.

The experimental methods described in the following examples are all conventional methods unless otherwise specified; the reagents and materials are commercially available, unless otherwise specified.