阅读说明：本技术 一种温度自适应润滑齿轮及其制备方法 (Temperature self-adaptive lubricating gear and preparation method thereof ) 是由 邢佑强 周怡君 王亮 罗晨 于 2020-12-02 设计创作，主要内容包括：本发明公开了一种温度自适应润滑齿轮及其制备方法,包括齿轮基体和复合涂层,所述复合涂层涂覆在所述齿轮基体的表面；所述复合涂层包括第一涂层和第二涂层,所述第一涂层和第二涂层交替叠加；所述第一涂层为TiVZnC层,所述第二涂层为MoTeNbN层；所述复合涂层采用多弧离子镀+中频磁控溅射共沉积的方法在齿轮基体表面制备。该齿轮在工作温度较低时,MoTeNbN涂层能够起到润滑作用；工作温度较高时,TiVZnC涂层、MoTeNbN涂层及空气中氧气会发生反应,生成具有高温润滑作用的ZnMoO-4和V-2O-5化合物,从而能够起到润滑作用。该齿轮能够适应多种温度场合,在宽温度范围或交变温度条件下,均具有良好的自适应润滑功效,可减小齿面摩擦磨损,提高齿轮寿命。(The invention discloses a temperature self-adaptive lubricating gear and a preparation method thereof, wherein the temperature self-adaptive lubricating gear comprises a gear matrix and a composite coating, wherein the composite coating is coated on the surface of the gear matrix; the composite coating comprises a first coating and a second coating, and the first coating and the second coating are alternately superposed; the first coating is a TiVZnC layer, and the second coating is a MoTeNbN layer; the composite coating is prepared on the surface of the gear matrix by adopting a method of multi-arc ion plating and medium-frequency magnetron sputtering codeposition. When the gear is at a lower working temperature, the MoTeNbN coating can play a role in lubricating; at higher operating temperatures, the TiVZnC coatingThe layer, the MoTeNbN coating and oxygen in the air react to generate ZnMoO with high-temperature lubrication 4 And V 2 O 5 The compound, thereby being capable of playing a lubricating role. The gear can adapt to various temperature occasions, has good self-adaptive lubricating effect under the conditions of wide temperature range or alternating temperature, can reduce the friction and wear of the tooth surface, and prolongs the service life of the gear.)

1. A temperature self-adaptive lubricating gear is characterized by comprising a gear base body (1) and a composite coating, wherein the composite coating is coated on the surface of the gear base body (1); the composite coating comprises a first coating (2) and a second coating (3), wherein the first coating (2) and the second coating (3) are alternately stacked, the first coating (2) is a TiVZnC layer, and the second coating (3) is a MoTeNbN layer.

2. The temperature-adaptively lubricated gear according to claim 1, wherein the composite coating comprises at least 10 layers of TiVZnC and 10 layers of MoTeNbN, and the first coating (2) and the second coating (3) each have a monolayer thickness of 100nm or less.

3. The temperature-adaptively lubricated gear according to claim 1, wherein in the first coating layer (2), the atomic percent of Ti is 30-50%, the atomic percent of V is 10-20%, the atomic percent of Zn is 5-15%, the atomic percent of C is 20-40%, and the sum of the atomic percent of Ti, V, Zn and C is 100%.

4. The temperature-adaptively lubricated gear according to claim 1, wherein in the second coating layer (3), the atomic percent of Mo element is 30-40%, the atomic percent of Te element is 30-40%, the atomic percent of Nb element is 8-12%, the atomic percent of N element is 10-20%, and the sum of the atomic percent of Mo, Te, Nb and N element is 100%.

5. The temperature-adaptive lubricating gear according to claim 1, characterized in that the gear base body (1) material is carbon steel.

6. A method of manufacturing a temperature-adaptively lubricated gear according to any one of claims 1 to 5, comprising:

the method comprises the steps of preparing a composite coating on the surface of a gear matrix (1) by adopting a multi-arc ion plating and medium-frequency magnetron sputtering codeposition method, wherein the composite coating comprises a first coating (2) and a second coating (3) which are alternately superposed.

7. The preparation method according to claim 6, comprising the steps of:

step 1, preparing a first coating (2) by adopting a Ti target and VZnC target codeposition method: adjusting the working air pressure to 0.5-2.5Pa, the bias voltage to 100-300V, the Ti target current to 50-160A and the VZnC target current to 50-100A, and depositing the first coating for 3-5 min;

step 2, adopting MoTe2 target, Nb target and N₂Codeposition method to prepare the second coating (3): adjusting the working pressure to 0.5-2.0Pa, the bias pressure to 100-120V, and adjusting N₂Depositing a second coating for 5-8min with the flow of 50-80sccm, the MoTe2 target current of 80-120A and the Nb target current of 30-50A;

and 3, repeating the step 1 and the step 2, and alternately depositing TiVZnC and MoTeNbN coatings until the total thickness of the composite coating on the surface of the gear matrix (1) is a preset thickness to obtain the temperature self-adaptive lubricating gear.

8. The method according to claim 6, wherein the predetermined thickness is 1 to 10 μm.

Technical Field

The invention belongs to the technical field of gear manufacturing, and particularly relates to a temperature self-adaptive lubricating gear and a preparation method thereof.

Background

Gears are extremely common mechanical parts used in industry, and are widely applied to transmission mechanisms for transmitting motion and power. In the gear transmission process, large friction wear exists between tooth surfaces, so that the gear transmission needs enough lubrication to reduce the friction wear between the gears and prolong the service life of the gears. However, in the high-temperature and high-pressure contact state, the lubricating oil hardly enters the frictional contact interface, and an effective lubricating film is formed. The self-lubricating gear does not need lubricating oil and a complex lubricating system thereof, and can form a lubricating film on the working surface so as to realize the lubricating effect in the working process of the gear. However, how to improve the lubrication performance of the gears under a wide temperature range or alternating temperature condition becomes a difficult problem in the working process of the gears.

Chinese patent "application number: CN201810145366.6 reports a multi-material composite self-lubricating gear, and a self-lubricating coating is prepared on the surface of a gear matrix by a 3D printing technology, so that the self-lubricating function of the gear is realized. Chinese patent "application number: CN201810145191.9 "reports a method for processing a surface of a cross-scale staggered embedded self-lubricating gear, in which a micro-texture is processed on the surface of the gear, and a self-lubricating material is embedded, so as to realize the self-lubricating function of the gear. Chinese patent "application number: CN201711395397.9 reports a self-lubricating gear with micro-texture, the surface of the gear is processed with micro-texture and filled with lubricating medium, and the micro-texture is softened at high friction temperature to form a lubricating film, thereby realizing continuous self-lubricating effect in the friction area of the gear.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the invention provides a temperature self-adaptive lubricating gear and a preparation method thereof, wherein the gear has good self-adaptive lubricating capability in a wide temperature range and an alternating temperature range, can realize lubrication in the working process of the gear, and reduces the abrasion of a tooth surface, thereby prolonging the service life of the gear.

In order to solve the technical problem, in one aspect, an embodiment of the present invention provides a temperature adaptive lubricating gear, including a gear base body and a composite coating, where the composite coating is coated on a surface of the gear base body; the composite coating comprises a first coating and a second coating, wherein the first coating and the second coating are alternately overlapped, the first coating is a TiVZnC layer, and the second coating is a MoTeNbN layer.

Preferably, the composite coating at least comprises 10 TiVZnC layers and 10 MoTeNbN layers, and the single-layer thickness of the first coating and the second coating is less than or equal to 100 nm.

Preferably, in the first coating, the atomic percent of Ti element is 30-50%, the atomic percent of V element is 10-20%, the atomic percent of Zn element is 5-15%, the atomic percent of C element is 20-40%, and the sum of the atomic percent of Ti, V, Zn and C element is 100%.

Preferably, in the second coating, the atomic percent of Mo element is 30-40%, the atomic percent of Te element is 30-40%, the atomic percent of Nb element is 8-12%, the atomic percent of N element is 10-20%, and the sum of the atomic percent of Mo, Te, Nb and N element is 100%.

Preferably, the gear base material is carbon steel.

In another aspect, an embodiment of the present invention provides a method for preparing a temperature-adaptive lubricating gear, including:

the method comprises the steps of preparing a composite coating on the surface of a gear matrix by adopting a multi-arc ion plating and medium-frequency magnetron sputtering codeposition method, wherein the composite coating comprises a first coating and a second coating which are alternately superposed.

Preferably, the preparation method for preparing the temperature-adaptive lubricating gear specifically comprises the following steps:

step 1, preparing a first coating by adopting a Ti target and VZnC target codeposition method: adjusting the working air pressure to 0.5-2.5Pa, the bias voltage to 100-300V, the Ti target current to 50-160A and the VZnC target current to 50-100A, and depositing the first coating for 3-5 min;

step 2, adoptMoTe2 target, Nb target, and N₂The codeposition method is used for preparing a second coating: adjusting the working pressure to 0.5-2.0Pa, the bias voltage to 100-120V, the flow rate of N2 to 50-80sccm, the MoTe2 target current to 80-120A and the Nb target current to 30-50A, and depositing the second coating for 5-8 min;

and 3, repeating the step 1 and the step 2, and alternately depositing TiVZnC and MoTeNbN coatings until the total thickness of the composite coating on the surface of the gear matrix is a preset thickness to obtain the temperature self-adaptive lubricating gear.

Preferably, the predetermined thickness is 1 to 10 μm.

Has the advantages that: 1. the gear has good self-adaptive lubricating effect in a wide temperature range working range; when the working temperature is lower, the MoTeNbN coating can play a role in lubricating; when the working temperature is higher, TiVZnC, MoTeNbN and oxygen in the air react to generate ZnMoO with high-temperature lubrication effect₄And V₂O₅The compound can play a good lubricating role under the high-temperature condition; 2, the TiVZnC + MoTeNbN laminated coating improves the performance of a single coating and increases the application range of the gear.

Drawings

Fig. 1 is a schematic structural diagram of a temperature-adaptive lubricating gear according to the invention.

Wherein: 1 gear matrix, 2 first coating, 3 second coating.

Detailed Description

The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features.

As shown in fig. 1, the embodiment adopted by the present invention is as follows:

example 1: a temperature self-adaptive lubricating gear is characterized in that a gear base material is 40Cr steel, and the surface of the base material is provided with a wide-temperature-range self-lubricating laminated coating in which TiVZnC and MoTeNbN are alternately distributed. The laminated coating comprises 10 TiVZnC layers and 10 MoTeNbN layers, and the thickness of a single layer of TiVZnC and MoTeNbN is 100 nm.

According to the temperature self-adaptive lubricating gear, the atomic percent of Ti element, the atomic percent of V element, the atomic percent of Zn element and the atomic percent of C element in the TiVZnC coating are respectively 30 percent, 20 percent, 15 percent and 35 percent, and the sum of the atomic percent of the Ti, V, Zn and C elements is 100 percent; in the MoTeNbN coating, the atomic percent of Mo element is 30%, the atomic percent of Te element is 40%, the atomic percent of Nb element is 10%, the atomic percent of N element is 20%, and the sum of the atomic percent of Mo, Te, Nb and N element is 100%.

The invention relates to a preparation method of a temperature self-adaptive lubricating gear, which adopts a method of multi-arc ion plating and medium-frequency magnetron sputtering codeposition to prepare a wide-temperature-range self-lubricating coating with TiVZnC and MoTeNbN alternately distributed on the surface of a gear matrix; the TiVZnC coating is prepared by adopting a Ti target and VZnC target codeposition method, the working pressure is 0.5Pa, the bias voltage is 150V, the Ti target current is 50A, the VZnC target current is 60A, and the TiVZnC coating is deposited for 5 min; the MoTeNbN coating adopts a MoTe2 target, an Nb target and N₂The co-deposition method is used for preparing, the working pressure is 0.5Pa, the bias voltage is 100V, the flow rate of N2 is 50sccm, the MoTe2 target current is 90A, the Nb target current is 30A, and the MoTeNbN coating is deposited for 8 min; the TiVZnC and MoTeNbN coatings were deposited alternately to give a total coating thickness of 2 μm.

Example 2: a temperature self-adaptive lubricating gear is characterized in that a gear base material is 45 steel, and the surface of the base material is provided with a wide-temperature-range self-lubricating laminated coating in which TiVZnC and MoTeNbN are alternately distributed. The laminated coating comprises 50 TiVZnC layers and 50 MoTeNbN layers, and the thickness of the single layer of TiVZnC and MoTeNbN is 50 nm.

According to the temperature self-adaptive lubricating gear, the atomic percent of Ti element, the atomic percent of V element, the atomic percent of Zn element and the atomic percent of C element in the TiVZnC coating are respectively 50%, 10% and 30%, and the sum of the atomic percent of the Ti, V, Zn and C elements is 100%; in the MoTeNbN coating, the atomic percent of Mo element is 40%, the atomic percent of Te element is 40%, the atomic percent of Nb element is 8%, the atomic percent of N element is 12%, and the sum of the atomic percent of Mo, Te, Nb and N element is 100%.

The invention relates to a preparation method of a temperature self-adaptive lubricating gear, which adopts a method of multi-arc ion plating and medium-frequency magnetron sputtering codeposition,preparing a wide-temperature-range self-lubricating coating with TiVZnC and MoTeNbN alternately distributed on the surface of a gear matrix; the TiVZnC coating is prepared by adopting a Ti target and VZnC target codeposition method, the working pressure is 2.0Pa, the bias voltage is 300V, the Ti target current is 150A, the VZnC target current is 80A, and the TiBCrC coating is deposited for 3 min; the MoTeNbN coating adopts a MoTe2 target, an Nb target and N₂The codeposition method is adopted for preparation, the working pressure is 2.0Pa, the bias voltage is 120V, and N₂Depositing a MoTeNbN coating for 6min with the flow of 70sccm, the MoTe2 target current of 100A and the Nb target current of 50A; the TiVZnC and MoTeNbN coatings were deposited alternately to give a total coating thickness of 5 μm.

Example 3: a temperature self-adaptive lubricating gear is characterized in that a gear base material is 45 steel, and the surface of the base material is provided with a wide-temperature-range self-lubricating laminated coating in which TiVZnC and MoTeNbN are alternately distributed. The laminated coating comprises 20 TiVZnC layers and 20 MoTeNbN layers, and the thickness of the single layer of TiVZnC and MoTeNbN is 80 nm.

According to the temperature self-adaptive lubricating gear, the atomic percent of Ti element, the atomic percent of V element, the atomic percent of Zn element and the atomic percent of C element in the TiVZnC coating are respectively 35%, 20%, 5% and 40%, and the sum of the atomic percent of the Ti, V, Zn and C elements is 100%; in the MoTeNbN coating, the atomic percent of Mo element is 39%, the atomic percent of Te element is 39%, the atomic percent of Nb element is 12%, the atomic percent of N element is 10%, and the sum of the atomic percent of Mo, Te, Nb and N element is 100%.

The invention relates to a preparation method of a temperature self-adaptive lubricating gear, which adopts a method of multi-arc ion plating and medium-frequency magnetron sputtering codeposition to prepare a wide-temperature-range self-lubricating coating with TiVZnC and MoTeNbN alternately distributed on the surface of a gear matrix; the TiVZnC coating is prepared by adopting a Ti target and VZnC target codeposition method, the working pressure is 2.5Pa, the bias voltage is 100V, the Ti target current is 160A, the VZnC target current is 50A, and the TiBCrC coating is deposited for 4 min; the MoTeNbN coating adopts a MoTe2 target, an Nb target and N₂The codeposition method is adopted for preparation, the working pressure is 1.0Pa, the bias voltage is 110V, N₂Depositing a MoTeNbN coating for 5min with the flow of 80sccm, the MoTe2 target current of 80A and the Nb target current of 40A; the TiVZnC and MoTeNbN coatings were deposited alternately to give a total coating thickness of 1 μm.

Example 4: a temperature self-adaptive lubricating gear is characterized in that a gear base material is 45 steel, and the surface of the base material is provided with a wide-temperature-range self-lubricating laminated coating in which TiVZnC and MoTeNbN are alternately distributed. The laminated coating comprises 60 TiVZnC layers and 60 MoTeNbN layers, and the thickness of a single layer of TiVZnC and MoTeNbN is 40 nm.

According to the temperature self-adaptive lubricating gear, the atomic percent of Ti element, the atomic percent of V element, the atomic percent of Zn element and the atomic percent of C element in the TiVZnC coating are respectively 50%, 15% and 20%, and the sum of the atomic percent of the Ti, V, Zn and C elements is 100%; in the MoTeNbN coating, the atomic percent of Mo element is 40%, the atomic percent of Te element is 30%, the atomic percent of Nb element is 12%, the atomic percent of N element is 18%, and the sum of the atomic percent of Mo, Te, Nb and N element is 100%.

The invention relates to a preparation method of a temperature self-adaptive lubricating gear, which adopts a method of multi-arc ion plating and medium-frequency magnetron sputtering codeposition to prepare a wide-temperature-range self-lubricating coating with TiVZnC and MoTeNbN alternately distributed on the surface of a gear matrix; the TiVZnC coating is prepared by adopting a Ti target and VZnC target codeposition method, the working pressure is 2.0Pa, the bias voltage is 300V, the Ti target current is 150A, the VZnC target current is 100A, and the TiBCrC coating is deposited for 3 min; the MoTeNbN coating adopts a MoTe2 target, an Nb target and N₂The codeposition method is adopted for preparation, the working pressure is 2.0Pa, the bias voltage is 120V, and N₂Depositing a MoTeNbN coating for 6min with the flow of 70sccm, the MoTe2 target current of 120A and the Nb target current of 50A; the TiVZnC and MoTeNbN coatings were deposited alternately to give a total coating thickness of 10 μm.

The embodiments of the present invention are merely preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. That is, all equivalent changes and modifications made according to the content of the claims of the present invention should be regarded as the technical scope of the present invention.