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Method for preparing high-strength ceramic composite material

A ceramic composite material and high-strength technology, applied in the field of ceramic material preparation, can solve problems such as poor mechanical properties of alumina ceramic materials, and achieve the effects of good practicability, good temperature change resistance and simple preparation method

Inactive Publication Date: 2011-11-16
SHANGHAI KEYONG M & E EQUIP
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Problems solved by technology

[0002] Alumina ceramic materials have the advantages of stable chemical properties, high temperature resistance, wear resistance, corrosion resistance and good insulation properties, and are currently one of the most widely used materials in the industrial field. certain fields are restricted

Method used

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Embodiment Construction

[0020] A method for preparing a high-strength ceramic composite material, characterized in that the following steps:

[0021] c) using industrial aluminum oxide as a base material, adding a Tic strengthening phase to obtain raw materials;

[0022] d) adding aluminum-titanium-carbon alloy and reinforced fiber net, and performing enhanced ball milling, and the powder after ball milling passes through a 100-mesh sieve to obtain a mixed powder;

[0023] Hot pressing sintering process is adopted, hot pressing sintering in nitrogen atmosphere, sintering temperature 1500-1600 degrees Celsius, pressure 25-30MPa, sintering time 1 hour, heat preservation 20-30 minutes.

[0024] The weight ratio of the described strength ceramic composite material is:

[0025] Matrix 70%-80%

[0026] Reinforced fiber mesh 15%-20%

[0027] Al-Ti-C alloy 5%-10%

[0028] The weight ratio of the base body is:

[0029] Aluminum oxide 45%-55%

[0030] TiC 45%-55%

[0031] The weight ratio of the aluminu...

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Abstract

The invention relates to the field of preparation of ceramic materials, in particular to a method for preparing a high-strength ceramic composite material. The method is characterized by comprising the following steps: preparing a raw material by adding a Tic reinforcing phase into industrial aluminum oxide serving as a substrate material; adding an aluminum-titanium-carbon alloy and a reinforcing fiber net, performing forced ball milling, passing the ball-milled powder through a 100-mesh sieve and obtaining mixed powder; and performing hot pressing sintering in an atmosphere of nitrogen by a hot pressing sintering process, wherein the sintering temperature is 1,500 to 1,600 DEG C, the sintering pressure is 25 to 30 MPa, the sintering time is 1 hour, and the temperature is kept for 20 to 30 minutes. Compared with the prior art, the invention has the advantage that the preparation method is simple. The practicality of the finished product is high, the process operation is simple and convenient, and the high temperature resistance, temperature deformation resistance, mechanical performance, pressure strength, bending strength and hardness are high.

Description

[technical field] [0001] The invention relates to the field of preparation of ceramic materials, in particular to a preparation method of high-strength ceramic composite materials. [Background technique] [0002] Alumina ceramic materials have the advantages of stable chemical properties, high temperature resistance, wear resistance, corrosion resistance and good insulation properties, and are currently one of the most widely used materials in the industrial field. Certain fields are restricted. [Content of the invention] [0003] The purpose of the invention is to overcome the deficiencies of the prior art and provide a method for preparing high-strength ceramic composite materials. [0004] In order to achieve the above object, design a kind of preparation method of high-strength ceramic composite material, it is characterized in that the following steps: [0005] a) using industrial aluminum oxide as a matrix material, adding a Tic strengthening phase to obtain raw ma...

Claims

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Application Information

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IPC IPC(8): C04B35/76C04B35/80C04B35/622
Inventor 向正阳
Owner SHANGHAI KEYONG M & E EQUIP
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