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The difference between silicon molybdenum and silicon carbide

Time:2018-01-22 17:54 Click:

The difference between silicon molybdenum and silicon carbide

Although silicon carbide and molybdenum silicide two are all resistive heating elements, they are all suitable for ceramic, magnetic materials, refractories, new materials and so on, though they all have high temperature resistance, corrosion resistance and oxidation resistance. But there are still many differences between them. In addition to the above characteristics of silicon carbide, and heat shock resistance, fast heating, high temperature deformation, acid resistance. Because its main component is silicon carbide, it will be oxidized slowly for long term use, resulting in the higher proportion of silicon dioxide in components, and the resistance of components will become bigger and aging. The main component of the silicon and molybdenum bar is two molybdenum silicide. Under the continuous high temperature, the protective film will be formed on the surface, so that the protection element is not oxidized. But the silicon dioxide protection film in the 1700 element will begin to melt at the temperature of over 1710, and the element will be slowly aging at this temperature. It is suggested that silicon carbide elements are used below 1300 C, and two molybdenum silicide elements are used at 1300-1700 C, and 1800 components are used over 1700 degrees C.

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