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Effect of Silicon Carbide Addition on Soft Charge of High Alumina Silicon Carbide Brick

2023-08-30

Adding too much will lead to an increase in the coefficient of thermal expansion, adding too little will lead to insufficient relative content of silicon carbide, adding the right amount of silicon carbide can improve the thermal shock resistance and wear resistance of high aluminum carbide bricks.

1. Excessive addition will lead to an increase in the coefficient of thermal expansion, resulting in excessive expansion and thermal stress damage of the brick body at high temperatures.

2. Too little addition will lead to insufficient relative content of silicon carbide, and the wear resistance and thermal shock resistance of the brick body will decrease.

3. Adding appropriate amount of silicon carbide can improve the thermal shock resistance and wear resistance of high alumina silicon carbide bricks, and make them show better durability under complex working conditions such as high temperature, high pressure and high thermal stress.

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According to the structural design requirements, making the reinforcement material SiC evenly distributed in the matrix is also one of the key technologies in the manufacture of aluminum silicon carbide materials. Especially in the low volume aluminum silicon carbide stirring method, vacuum pressure infiltration method, powder metallurgy method, the agglomeration of SiC particles, and the uniform distribution of SiC particles of different sizes is a difficult point.

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