Preparation method of compound wear-resistant coating on surface of beryllium-copper alloy

A beryllium copper alloy and wear-resistant coating technology, applied in the field of surface modification of metal materials, can solve the problems of peeling, high resistivity, low hardness, etc., to improve thermal conductivity and wear resistance, good bonding strength, good The effect of thermal conductivity

Active Publication Date: 2016-07-06
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the QBe1.9 alloy has low hardness and poor wear resistance. Therefore, when it is applied to frictional environments such as gears and test probes, it often causes serious wear due to its low hardness.
[0003] Due to the limitation of QBe1.9 alloy composition, structure and other characteristics, the method of heat treatment can increase the hardness of beryllium copper alloy to a limited extent,

Method used

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  • Preparation method of compound wear-resistant coating on surface of beryllium-copper alloy
  • Preparation method of compound wear-resistant coating on surface of beryllium-copper alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The target made of metal W wire and beryllium-copper alloy plate is used as the source. The target preparation process is as follows: punch small holes arranged in an orderly manner on the square beryllium-copper alloy plate, and penetrate the W wire with a length of 1.0cm into the In the small hole and fixed, it is the target material of tungsten W and beryllium copper alloy.

[0024] Include the following steps:

[0025] ① Copper alloy workpieces are ultrasonically cleaned with deionized water and alcohol, and dried with hot air;

[0026] ② Place the cleaned beryllium copper workpiece on the base of the double-layer glow plasma metallization equipment, and use the target made of metal W wire and beryllium copper alloy plate as the source to control the upper surface of the beryllium copper workpiece and the lower surface of the target. The distance between the surfaces is 18mm. When the vacuum furnace of the double-layer glow plasma metal infiltration equipment is pu...

Embodiment 2

[0032] The target made of metal Nb wire and beryllium-copper alloy plate is used as the source electrode. The target preparation process is as follows: punch small holes arranged in an orderly manner on the square beryllium-copper alloy plate, and penetrate the Nb wire with a uniform length of 0.8cm In the small hole and fixed, it is the target material of niobium Nb and beryllium copper alloy.

[0033] ① Copper alloy workpieces are ultrasonically cleaned with deionized water and alcohol, and dried with hot air;

[0034] ② Place the cleaned beryllium copper workpiece on the base of the double-layer glow plasma metallization equipment, use the target made of metal Nb wire and beryllium copper alloy plate as the source, and control the upper surface of the beryllium copper workpiece and the lower surface of the target. The distance between the surfaces is 20mm. When the vacuum furnace of the double-layer glow plasma metal infiltration equipment is pumped down to below 5Pa, argon...

Embodiment 3

[0039] The target made of Mo-Nb alloy wire and beryllium-copper alloy plate is used as the source. The target preparation process is as follows: orderly arranged small holes are punched on the circular beryllium-copper alloy plate, and Mo -Nb alloy wire penetrates into the small hole and fixes it, which is the target material of Mo-Nb alloy and beryllium copper alloy.

[0040] ① Copper alloy workpieces are ultrasonically cleaned with deionized water and alcohol, and dried with hot air;

[0041] ② Place the cleaned beryllium copper workpiece on the base of the double-layer glow plasma metallization equipment, use the target made of Mo-Nb alloy wire and beryllium copper alloy plate as the source, and control the contact between the upper surface of the beryllium copper workpiece and the target. The distance between the lower surfaces of the materials is 22mm. When the vacuum furnace of the double-layer glow plasma metal infiltration equipment is pumped down to below 5Pa, argon g...

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Abstract

The invention discloses a preparation method for a compound wear-resistant coating on the surface of a beryllium-copper alloy. The preparation method comprises the following steps: by adopting a double-layered glow plasma diffusion metallizing technology, preparing a diffusion coating layer on the surface of a beryllium-copper workpiece by taking a target material manufactured by any one wire of W, Mo and Nb or a W-Mo alloy, a Mo-Nb alloy, a W-Nb alloy and a W-Mo-Nb alloy and a beryllium-copper alloy panel as a source electrode, wherein before preparation, diamond particles subjected to Cu surface metallized treatment are uniformly sprayed to the surface of the beryllium-copper workpiece, so that the diamond particles are dispersively distributed; in the preparation process of the diffusion coating layer, uniformly spraying the diamond particles subjected to Cu surface metallized treatment to the surface of the workpiece once if the thickness of the coating is increased by 2-5[mu]m; after preparation of the diffusion coating layer is finished, introducing hydrogen for quick cooling; and then polishing the surface of the coating, and exposing the surfaces of the diamond particles. The coating prepared by the method has high electric conductivity, heat conductivity and wear resistance, the bonding strength of the coating with a matrix is high, and the preparation technology is simple in process.

Description

technical field [0001] The invention relates to a method for preparing a composite wear-resistant layer on the surface of a beryllium-copper alloy, which belongs to the technical field of surface modification of metal materials. Background technique [0002] Beryllium copper (QBe1.9) alloy is widely used in many fields such as electronic appliances, aerospace, petrochemical industry, etc. due to its good electrical conductivity, thermal conductivity, and high elastic limit, and has become an indispensable part of national economic construction. important industrial materials. However, QBe1.9 alloy has low hardness and poor wear resistance. Therefore, when it is applied to frictional environments such as gears and test probes, it often causes severe wear due to its low hardness. [0003] Due to the limitations of QBe1.9 alloy composition, structure and other characteristics, the method of heat treatment can only increase the hardness of beryllium copper alloy to a limited ex...

Claims

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Application Information

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IPC IPC(8): C23C10/28C23C14/16C23C14/32C23C24/08C23C28/02
CPCC23C10/28C23C14/16C23C14/32C23C24/085C23C28/021C23C28/027
Inventor 黑鸿君王荣于盛旺申艳艳刘小萍贺志勇
Owner TAIYUAN UNIV OF TECH
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