以混合稀土和再生WC-Co粉混合制备YG8硬质合金为研究对象,对合金性能和组织进行检测。结果表明:混合稀土的加入对合金样品的密度和硬度无影响,对合金的矫顽磁力、钴磁和抗弯强度产生一定的影响,但并不明显。与原生WC粉末制备的硬质合金相比,再生粉末制备的硬质合金,其钴磁和抗弯强度等性能下降严重,而且组织中出现明显的脱碳现象。 YG8 cemented carbide was prepared by mixing rare earth with regenerated WC-Co powder. The properties and microstructure of YG8 cemented carbide were studied. The results show that the addition of mixed rare earth has no effect on the density and hardness of the alloy samples, but has no obvious effect on the coercive force, cobalt magnetic and flexural strength of the alloy. Compared with the hard alloy prepared by the primary WC powder, the hard alloy prepared by the regenerated powder has a serious deterioration in the properties such as the magnetic and flexural strength of cobalt, and the obvious decarburization phenomenon in the structure.