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High quality low cost of ceramic super fine powder technology - bearing knowledge

by:Waxing     2020-06-08
The technology is the combination of dynamic and static high purity silicon nitride powder sintering process, its purpose is to make gas furnace in response to maintain a certain proportion relationship; Improve the control precision, in the static control response speed, when the dynamic ventilation. Using this technology in the production of silicon nitride powder performance index is close to the German M11 powder, more than Japan Danka powder, products have been exported to America. The product high purity, small particle fineness, large specific surface area, sintering activity and the performance of the sintered body has reached the international level, crystalline phase alpha = 95% purity, free Si 0 or less. 5%,Fe2O3≤0。 1%,CaO≤0. 05%,O≤1。 5%, the average particle size D50 0 or less. 35 microns, particle size distribution D90 = 0. 9μm,D99=1. 6 microns, BET surface 11 or higher. 5 m2 / g, granularity and Japan's ube XingChan co. , LTD ( UBE) Powder, but the difference is small and easier to colloidal forming. The product is mainly used in the manufacture of production wear-resisting, high temperature resistant artifacts, such as used for machining of ceramic cutting tools, hot resistance, friction ring, missile radome, ball bearings, etc.
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