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Diamond salt fusing and tungsten plating method

A technology of diamond and diamond particles, applied in metal material coating process, heating inorganic powder coating, coating and other directions, can solve the problems of poor cleanliness of tungsten atoms, cumbersome process, weak interface bonding force, etc. The effect of high effect, low process cost and easy reaction

Active Publication Date: 2016-06-15
江苏虹普电子材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In the above method of plating other metals on the surface of diamond, there are problems such as weak interface bonding force, and a large amount of carbonization of diamond after plating; in the method of surface tungsten plating, there are either poor cleanliness of tungsten atoms, or Defects such as cumbersome process and high process cost

Method used

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  • Diamond salt fusing and tungsten plating method
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  • Diamond salt fusing and tungsten plating method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) The diamond particles are placed in acetone, ultrasonically cleaned, and then ultrasonically cleaned with alcohol and dried. Each cleaning time is 15 minutes; the diamond particles are commercially available with a particle size of 100 μm.

[0034] (2) Diamond, commercially available chemically pure ammonium tungstate (calculated by moles of tungsten atoms), commercially available chemically pure sodium chloride, potassium chloride salt (sodium chloride: potassium chloride = 1:1, molar ratio) Mix at a molar ratio of 20:1:20, and then place it in a ball mill tank for roller ball milling for 48 hours.

[0035] (3) Take out the ball-milled mixed powder, place it in an alumina crucible, and heat it to 1200℃ in an argon atmosphere. The temperature rise rate below 1000℃ is 20℃ / min, and the temperature rise rate at 1000-1200℃ is 5 ℃ / min, keep for 0.5h, and then cool with the furnace.

[0036] (4) The above product in the crucible after high temperature treatment is taken out and...

Embodiment 2

[0038] (1) The diamond particles are placed in acetone, ultrasonically cleaned, and then ultrasonically cleaned with alcohol and dried. Each cleaning time is 5 minutes; the diamond particles are commercially available with a particle size of 120 μm.

[0039] (2) Combine diamond, commercially available analytical pure ammonium metatungstate (calculated by moles of tungsten atoms), commercially available chemical pure sodium chloride, potassium chloride, barium chloride salt (sodium chloride, potassium chloride, chlorinated Barium = 1:1:1, molar ratio) was mixed at a molar ratio of 10:1:10, and then placed in a ball milling tank for roller ball milling for 24 hours.

[0040] (3) Take out the ball-milled mixed powder, place it in an alumina crucible, heat it to 900°C in an argon atmosphere or under vacuum, the temperature rise rate below 700°C is 20°C / min, and the temperature rises at 700-900°C The speed is 5℃ / min, the temperature is kept for 4h, and then it is cooled with the furnace...

Embodiment 3

[0043] (1) The diamond particles are placed in acetone, ultrasonically cleaned, and then ultrasonically cleaned with alcohol and dried. Each cleaning time is 10 minutes; the diamond particles are commercially available with a particle size of 10 μm.

[0044] (2) Diamond, commercially available analytical pure ammonium paratungstate (calculated by moles of tungsten atoms), commercially available chemical pure sodium chloride, sodium carbonate and sodium sulfate (sodium chloride: sodium carbonate: sodium sulfate = 1:1:1, (Molar ratio) was mixed at a molar ratio of 15:1:10, and then placed in a ball mill tank for roller ball milling for 72 hours.

[0045] (3) Take out the ball-milled mixed powder, place it in an alumina crucible, and heat it to 1000℃ in an argon atmosphere or under vacuum. The temperature rise rate below 800℃ is 20℃ / min, and the temperature rises at 800-1000℃ The rate is 5℃ / min, the temperature is kept for 2h, and then it is cooled with the furnace.

[0046] (4) Take o...

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Abstract

The invention relates to a diamond salt fusing and tungsten plating method. The diamond salt fusing and tungsten plating method is characterized in that after greasy dirt on the surface of a diamond is removed through ultrasonic cleaning in acetone, the diamond is ultrasonically cleaned through alcohol and dried; and then the cleaned diamond, tungsten-containing ammonium salt and salt fusing salt are mixed according to a certain proportion and subjected to ball milling, powder obtained after ball milling is placed in an alumina crucible to be subjected to high-temperature treatment, the treatment temperature ranges from 900 DEG C to 1,200 DEG C, the insulating time ranges from 0.5 h to 4 h, and then cooling is achieved along with a furnace. The powder obtained after high temperature treatment is further ground, salt is removed through multiple times of ultrasonic vibrating and distilled water boiling, and then the tungsten-plated diamond is obtained. The surface of the tungsten-plated diamond prepared through the method contains WC and W, a plating layer is even, the comprehensive mechanical performance is good, the binding force is high after the tungsten-plated diamond and metal powder are sintered, and the tungsten-plated diamond is suitable for preparing various diamond cutting and grinding tools.

Description

Technical field [0001] The invention relates to a method for diamond molten salt tungsten plating. The process cost is low and the operation is convenient; the prepared tungsten-plated diamond surface contains WC and W, the plating layer is uniform, the comprehensive mechanical properties are good, and the bonding force after sintering with metal powder is strong , Suitable for preparing various diamond cutting and grinding tools. Background technique [0002] Diamond is a crystal composed of carbon atoms. It belongs to a face-centered cubic structure composed of tetrahedrons. The center of each tetrahedron and the carbon atoms at the top corners are closely connected by covalent bonds, which makes diamonds have high hardness. In addition, diamond has the advantages of corrosion resistance, high wear resistance, stable chemical properties, and good thermal conductivity. With the continuous development of modern industry and science and technology, diamond tools have become a nec...

Claims

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Application Information

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IPC IPC(8): C23C24/08
CPCC23C24/085
Inventor 刘桂武陶俊楠张阔乔冠军邵海成张相召徐紫巍王明松
Owner 江苏虹普电子材料科技有限公司
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