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Influence of Ru on the microstructure and performance of WC-Co cemented carbides

This study investigated the microstructure and properties of cemented carbides before and after the addition of Ru. The hardness and elastic modulus of the binder phase of Ru-containing cemented carbides were higher, and the hardness at room temperature and high temperature were also high. In particular, the oxidation resistance of Ru-containing cemented carbides was enhanced at high temperatures. Therefore, the solid solution-strengthening effect of the binder phase containing Ru was significant, which was conducive to the improvement of the high-temperature hardness and enhancement of the high-temperature characteristics of the alloy.