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Preparation method of tungsten alloy with silicon coating

A tungsten alloy and silicon coating technology, applied in the field of alloy material manufacturing, can solve the problems of low bonding strength, and achieve the effect of uniform and dense surface, excellent mechanical properties, and high bonding strength of film base

Inactive Publication Date: 2018-06-29
戴爱娟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Silica gel has the characteristics of good thermal insulation performance, controllable nanostructure, good corrosion resistance, and excellent biocompatibility, but SiO 2 If the gel is directly coated on the surface of the alloy, there will be a problem of low bond strength, so it is necessary to introduce a film-forming agent for modification

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The tungsten alloy substrate of this embodiment is composed of the following weight components: 90 parts of WC powder with a Fischer particle size of 1-1.5um, 8 parts of Co powder with a Fischer particle size of 0.5-0.8um, 1 part of Si powder, 0.5 of graphite powder Copies.

[0025] Select each material component according to the above material formula.

[0026] Use 1Kg agitating ball mill, first add Si powder, C powder and Co powder, add pentanol as the grinding medium at the ratio of 500ml / kg, add the grinding ball according to the ball ratio of 5:1, stir and grind, the diameter of the grinding ball is D7, the ball mill The stirring speed is 480 rpm, the filling factor is 0.85, and the grinding is for 1 hour.

[0027] Then add tungsten carbide and grind for 5 hours to form a slurry to form a slurry.

[0028] Filtering and drying, the filter mesh is 40 meshes, the drying temperature is 70 DEG C, and the cemented carbide mixture particles are made.

[0029] The cemented carbide...

Embodiment 2

[0035] The tungsten alloy material base material of this embodiment is composed of the following weight components: 95 parts of WC powder with a Fibonacci particle size of 1-1.5um, 12 parts of Co powder with a Fischer particle size of 0.5-0.8um, 2 parts of Si powder, graphite 1 part powder.

[0036] Select each material component according to the above material formula.

[0037] Use 1Kg agitating ball mill, first add Si powder, C powder and Co powder, add pentanol as the grinding medium at the ratio of 500ml / kg, add the grinding ball according to the ball ratio of 5:1, stir and grind, the diameter of the grinding ball is D7, the ball mill The stirring speed is 480 rpm, the filling factor is 0.85, and the grinding is for 1 hour.

[0038] Then, tungsten carbide is added and ground for 7 hours to form a slurry.

[0039] Filtering and drying, the filter mesh is 50 meshes, and the drying temperature is 85°C to make cemented carbide mixture pellets.

[0040] The cemented carbide mixture pel...

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Abstract

The invention discloses a preparation method of a tungsten alloy with a silicon coating. According to the method, the structure of a material is obviously improved and controlled, and the tungsten alloy is prepared; and PVA / SiO2 composite sol surface modification treatment is carried out on the surface of the material of an aluminum-silicon-copper alloy, the surface of the tungsten alloy is uniform and compact, the film-base bonding strength is high, and the mechanical property is excellent.

Description

Technical field [0001] The invention relates to the field of alloy material manufacturing, in particular to a method for preparing a tungsten alloy with a silicon coating. Background technique [0002] Tungsten and its alloys are widely used in high-temperature fields such as high-temperature heating, glass melting, high-temperature structural support, etc. due to their advantages of high melting point, high strength, good electrical and thermal conductivity, strong corrosion resistance and good high-temperature mechanical properties. [0003] Silica gel has the characteristics of good thermal insulation performance, controllable nanostructure, good corrosion resistance, and excellent biocompatibility. However, SiO 2 If the gel is directly coated on the surface of the alloy, there is a problem of low bonding strength, so it is necessary to introduce a film-forming agent for modification. Polyvinyl alcohol is a non-toxic and transparent polyhydroxy polymer. When used as an organic c...

Claims

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Application Information

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IPC IPC(8): B22F9/04B22F3/10B22F3/24C22C1/05
CPCB22F3/1007B22F3/24B22F9/04B22F2009/043C22C1/051
Inventor 戴爱娟
Owner 戴爱娟
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