Tungsten Carbide Nozzle Grain Growth Suppression (2)

However, the last method belongs to a theoretical ideal and the operation is also complicated. The specific processes is that after the coated powder of WO2.90 (WO3) through thermal decomposition reduction, the inhibitor can be distributed more uniformly on the surface of the particles W, and then carbonized, add Co triturated wet mixing meanwhile. Furthermore, the adding amount of grain growth inhibitor is generally based on liquid binder phase inhibitor concentration, and the finest microstructure can be obtained simultaneously. And the use of inhibitors usually reduces the toughness of cemented carbide nozzles, so the control of the adding amount is very significant.











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