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A kind of tungsten diboride hard material and its preparation method and application

A technology of hard materials and diboration, which is applied in the field of tungsten diboride hard materials and its preparation, can solve the problems of not being able to obtain dense bulk materials and difficult to grasp the boron content, and achieve strong controllability

Active Publication Date: 2020-07-28
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, directly prepare WB with tungsten powder and boron powder 2 In addition to the difficulty in controlling the boron content of bulk materials, low borides (such as W 2 B), can not get the complete reaction to WB 2 Dense bulk material with main phase

Method used

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  • A kind of tungsten diboride hard material and its preparation method and application
  • A kind of tungsten diboride hard material and its preparation method and application
  • A kind of tungsten diboride hard material and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0034] 1. Use a high-energy ball mill for ball milling. In a glove box filled with argon, mix high-purity tungsten powder (W) and boron powder (B) at a stoichiometric ratio of 1:3, add six tungsten carbide balls, The size is 11.20mm, and the mass ratio of balls to mixed powder is 4:1.

[0035] 2. Fix the tungsten carbide ball mill tank with powder and balls on the high energy ball mill. The total time of ball milling is 40h, and the ball milling is stopped for 20min every 1h (to prevent the engine from overheating) to obtain tungsten diboride powder.

Embodiment 2

[0037] 1. Use a high-energy ball mill for ball milling. In a glove box filled with argon, mix high-purity tungsten powder (W) and boron powder (B) at a stoichiometric ratio of 1:3, add six tungsten carbide balls, The size is 11.20mm, and the mass ratio of balls to mixed powder is 4:1.

[0038] 2. Fix the tungsten carbide ball mill tank with powder and balls on the high energy ball mill. The total time of ball milling is 40h, and the ball milling is stopped for 20min every 1h (to prevent the engine from overheating) to obtain tungsten diboride powder.

Embodiment 3

[0040] 1. Use a high-energy ball mill for ball milling. In a glove box filled with argon, mix high-purity tungsten powder (W) and boron powder (B) at a stoichiometric ratio of 1:3, add six tungsten carbide balls, The size is 11.20mm, and the mass ratio of balls to mixed powder is 4:1.

[0041] 2. Fix the tungsten carbide ball mill tank with powder and balls on the high energy ball mill. The total time of ball milling is 40h, and the ball milling is stopped for 20min every 1h (to prevent the engine from overheating) to obtain tungsten diboride powder.

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Abstract

The invention belongs to an inorganic nonmetal hard material and discloses a preparation method for a tungsten diboride hard material. The method comprises the following steps: adopting a mechanical chemical method for compounding the raw materials including high-purity tungsten (W) powder and boron (B) powder into tungsten diboride powder under room temperature, adopting high-temperature sintering for compacting the compounded powder under the argon shield atmosphere, thereby acquiring a tungsten diboride block material. According to the method, the compact tungsten diboride block material can be acquired in the manner of sintering under the conditions of normal temperature and normal pressure. The tungsten diboride block material prepared according to the invention has a series of excellent properties, such as, certain hardness, high stability and excellent absorbing effect for neutrons. The tungsten diboride material prepared according to the invention has wide application in the fields of corrosion-resisting materials, cutting tools, novel shielding materials, and the like.

Description

technical field [0001] The invention belongs to the technical field of inorganic non-metallic hard materials, and more specifically relates to a tungsten diboride hard material and its preparation method and application. Background technique [0002] Hard materials are widely used in cutting tools, wear-resistant coatings, and abrasive-resistant materials due to their excellent properties such as high hardness, good wear resistance, and chemical stability. At present, the hard materials widely used in industry are mainly diamond and cubic boron nitride. However, the thermal and chemical stability of diamond is poor, and it is easily oxidized when heated to 800°C in air. In addition, when machining ferrous metal workpieces, carbon will penetrate into the tool and cause tool wear and even failure. The thermal stability and chemical stability of cubic boron carbide are better than diamond, but because this kind of material needs to be prepared under high temperature and high ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B35/04B23B27/14
CPCB23B27/14C01B35/04C01P2002/72C01P2004/03
Inventor 龙莹郑鑫邹灿辉慕容匡林华泰张凤林王成勇
Owner GUANGDONG UNIV OF TECH