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Method of forming nanograin tungsten carbide and recycling tungsten carbide
Method of forming nanograin tungsten carbide and recycling tungsten carbide
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机译:纳米碳化钨的形成方法及回收碳化钨的方法
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摘要
Tungsten carbide is formed from a tungsten material which is preferably tungsten carbide scrap. If scrap material is used, this is oxidized and acid leached to remove impurities and any binder material. This is then dissolved in a solution of sodium hydroxide and spray dried to form a precursor compound. A carbon compound such as citric acid can be added to the solution prior to spray drying to provide a carbon source for the tungsten carbide. The powder formed from the spray dried solution is calcined and carburized to form tungsten carbide.
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