WC-10Co cemented carbide with micro/nano CeO₂ additives was obtained through powder metallurgy technology. The effects of CeO₂ grain size on the structure and performances were investigated by scanning electron microscope, X-ray diffraction, mechanical properties testers and friction testing machine. The results showed that the grain size of WC decreased after adding micro/nano CeO₂, and the refining effect of nano CeO₂ was better than that of micro CeO₂. The properties of alloys such as Vickers hardness, TRS and fracture toughness increased with the increase of CeO₂ additives, and then followed a decrease trend when the content of CeO₂ exceeded 0.8%. Furthermore, the content of nano CeO₂ greatly affected the cemented carbide and 0.4% of nano CeO₂ revealed the strongest improvement on the structure and performances of WC-10Co cemented carbide.

通过粉末冶金技术获得了具有微量/纳米CeO ₂添加剂的WC-10Co硬质合金。通过扫描电子显微镜，X射线衍射，力学性能测试仪和摩擦试验机研究了CeO ₂晶粒尺寸对结构和性能的影响。结果表明，WC的颗粒尺寸增加微/纳米的CeO后下降₂，和纳米的CeO的精炼效果₂比微的CeO更好₂。随着CeO ₂含量的增加，合金的维氏硬度，TRS和断裂韧性等性能均呈上升趋势，然后随着CeO ₂含量的增加呈下降趋势。超过0.8％。此外，纳米CeO ₂的含量对硬质合金的影响很大，而0.4％的纳米CeO ₂显示出WC-10Co硬质合金的结构和性能有最强的改善。