How to improve the wear resistance of mullite

Time:2017/9/7 16:29:23 Click on:

When we purchase mullite, we will pay attention to its raw materials, because the raw materials directly affect the wear resistance and the number of applications of mullite stone. So how can we improve the wear resistance of mullite stone?

      The wear resistance of mullite depends on the composition and layout of the material. When the material is a fine polycrystalline body composed of a single crystal, its wear resistance depends primarily on the hardness of the mineral crystals that make up the material. High hardness, high wear resistance of the product. When the mineral crystal is non-isotropic, the crystal grains are fine and the wear resistance of the material is high. When the product is composed of multiple phases, its wear resistance is also directly related to the product's bulk density or porosity, and it is also related to the contact strength of each component.

      At room temperature, for a certain kind of mullite mortar, its wear resistance is directly proportional to its compressive strength, and products with excellent sintering have better wear resistance. The wear resistance of refractory products is related to temperature. Some materials such as silica-alumina refractory products, it is generally believed that at a certain temperature, the higher the temperature the lower the wear resistance, can be thought that when the temperature advances with the increase of elastic modulus, wear resistance has declined. When the temperature rises and reaches the maximum value of the elastic modulus, the wear resistance proceeds as the elastic modulus decreases.

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