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A relatively low-cost, controllable particle size and eco-environmental recycling process for the oxidation and reduction of waste YG8 cemented carbides was achieved. The WC-Co composite powder has been synthesized by two-step reduction process. Reduction of WO3/CoWO4 in the hydrogen gas at 1073K is a feasible way for the production of W18O49 phase. Then the carbothermal reduction of the as-synthesized...
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