Abstract Hard carbide cermets are prepared by in-situ synthesis and infiltration of metal melts into WC powder compacts. Ni–W and Ni–W–Cr metal melts are in-situ synthesized from thermite reactions and infiltrated into WC powder compacts under high-gravity. During the infiltration, W in the metal melts reacts with WC to form W2C, and more W2C and W are observed at the upper parts of the cermets than the lower parts. The cermets show a maximum hardness of 15.4 GPa, which is higher than most commercial cemented carbides, although they are not fully dense and have a porosity of 15–20%.

中文翻译：

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通过原位合成和将金属熔体渗透到 WC 粉末压块中来制造硬质金属陶瓷

摘要 硬质合金金属陶瓷是通过原位合成和将金属熔体渗透到 WC 粉末压块中制备的。Ni-W 和 Ni-W-Cr 金属熔体由铝热剂反应原位合成，并在高重力下渗入 WC 粉末压块中。在渗透过程中，金属熔体中的 W 与 WC 反应形成 W2C，在金属陶瓷的上部观察到的 W2C 和 W 多于下部。金属陶瓷的最大硬度为 15.4 GPa，高于大多数商业硬质合金，尽管它们不完全致密且孔隙率为 15-20%。