A kind of preparation method of diamond composite material

A composite material and diamond technology, used in metal processing equipment, coating, transportation and packaging, etc., can solve the problem of high interface, achieve high dimensional accuracy, high corrosion resistance, improve hardness and fracture toughness effect.

Active Publication Date: 2018-07-24
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Steel-based composites have high high-temperature strength, specific strength, specific stiffness and oxidation resistance, as well as good wear resistance and thermal conductivity, but the interface energy between diamond and steel is very high, so the diamond and steel matrix There are limitations in the comprehensive application of the two

Method used

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  • A kind of preparation method of diamond composite material
  • A kind of preparation method of diamond composite material
  • A kind of preparation method of diamond composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0029] The preparation method of diamond composite material described in the present embodiment specifically comprises the following steps:

[0030] (1) Ultrasonic treatment of diamond particles (with a particle size of 90 μm) in acetone solution, cleaning and rinsing with distilled water; then weigh the cleaned diamond particles, add binder and mix well, then add nickel-chromium alloy powder for Stir to make it evenly coated on the surface of the diamond particles, and then place it at a temperature of 200 ° C for 1 hour to obtain pretreated diamond particles; wherein the volume ratio of diamond particles is 90%, and the volume ratio of nickel-chromium alloy powder is 8%, and the volume ratio of the binder is 2%.

[0031] (2) Use XQM-4L planetary ball mill for ball milling of the mixed powder, set the speed of the ball mill to 300r / min, and mix the diamond particles obtained in step (1) with high manganese steel powder (particle size: 250μm) for ball milling to obtain the mix...

Embodiment 2

[0038] The preparation method of diamond composite material described in the present embodiment specifically comprises the following steps:

[0039] (1) Ultrasonic treatment of diamond particles (with a particle size of 80 μm) in acetone solution, cleaning and rinsing with distilled water; then weigh the cleaned diamond particles, add binder and mix well, then add nickel-chromium alloy powder for Stir to make it evenly coated on the surface of the diamond particles, and then place it at a temperature of 250 ° C for 2 hours to obtain pretreated diamond particles; wherein the volume ratio of diamond particles is 80%, and the volume ratio of nickel-chromium alloy powder is 15%, and the volume ratio of binder is 5%.

[0040] (2) Use XQM-4L planetary ball mill for ball milling of the mixed powder, set the speed of the ball mill to 150r / min, and mix the diamond particles obtained in step (1) with high manganese steel powder (particle size: 380μm) for ball milling to obtain the mixed...

Embodiment 3

[0045] The preparation method of diamond composite material described in the present embodiment specifically comprises the following steps:

[0046] (1) Ultrasonic treatment of diamond particles (with a particle size of 100 μm) in acetone solution, cleaning and rinsing with distilled water; then weigh the cleaned diamond particles, add binder and mix well, then add nickel-chromium alloy powder for Stir to make it evenly coated on the surface of diamond particles, and then place it at a temperature of 230 ° C for 1.5 hours to obtain pretreated diamond particles; the volume ratio of diamond particles is 85%, and the volume ratio of nickel-chromium alloy powder is 12%, and the volume ratio of the binder is 3%.

[0047] (2) Use XQM-4L planetary ball mill for ball milling of the mixed powder, set the speed of the ball mill to 150r / min, mix the diamond particles obtained in step (1) with high manganese steel powder (particle size is 10μm) and ball mill to get the mixed powder , the...

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Abstract

The invention discloses a method for preparing a diamond composite material, which belongs to the technical field of composite material preparation. The preparation method of the diamond composite material in the present invention is to pretreat the diamond particles in advance, then uniformly mix the high manganese steel powder and the diamond particles and press them into a preform, and finally carry out vacuum sintering to obtain the diamond composite material. The sintering temperature of the method of the present invention is low, the diamond can be evenly distributed in the high manganese steel matrix, and the composite material produced has good consolidation strength, flatness and sharpness, and does not contain impurities, and has high comprehensive performance and is beneficial to Environmentally friendly, it can serve in complex working conditions such as severe cold and heat, impact wear, etc. It can be used in various disc abrasives and wear-resistant workpieces, and has good wear resistance, impact resistance, oxidation resistance and corrosion resistance ability.

Description

technical field [0001] The invention relates to a method for preparing a diamond composite material, belonging to the technical field of composite material preparation. Background technique [0002] Diamond particles have excellent characteristics such as high hardness, high wear resistance and corrosion resistance, and have a wide range of applications in wear-resistant materials. Among the grinding workpieces, the metals usually added include Al, Cu, Ti, Mg, Zn and some refractory metals. Diamond and Al are generally produced by squeeze casting. The materials produced have the characteristics of high specific strength, corrosion resistance, and good dimensional stability. However, the microstructure of the material is uneven and the cost is high, which limits its application in engineering. . Diamond and Cu are usually prepared by conventional casting methods. The materials produced have high hardness and anti-adhesion properties, but the subsequent cutting is cumbersome...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C26/00C22C33/02B22F1/02B22F3/02B22F3/10
CPCC22C26/00C22C33/0278B22F3/02B22F3/1017B22F1/17
Inventor 李祖来王鹏飞蒋业华山泉周荣陈奉锐
Owner KUNMING UNIV OF SCI & TECH
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