超细(纳米)硬质合金的制备研究进展

Research Progress in Preparation of Ultrafine(Nano-structured)Cemented Carbide

随着电子信息产业、汽车制造业及相关行业的快速发展,超细(纳米)硬质合金的需求量逐年上升。超细(纳米)硬质合金制备的关键问题之一是如何控制WC晶粒的长大,着重论述原材料和烧结技术对高性能超细(纳米)硬质合金制备的影响。分析了超细(纳米)WC-Co复合粉末和硬质合金的关键制备方法及其优缺点,指出了复合粉末和超细(纳米)硬质合金制备过程中存在的主要问题及其解决方案。最后,对每种制备方法的发展潜力进行了展望,阐明了超细(纳米)硬质合金的发展趋势。

Demand for ultrafine （nano） cemented carbide increases with the rapid development of electronic information industry, auto manufacturing and related industries. One of the key issues in ultrafine （nano） cemented carbide preparation is how to control the growth of WC grains. Effects of raw materials and sintering technology on the preparation of ultrafine （nano） cemented carbide with high performance are discussed. The key preparation methods and their advantages and disadvantages for ultrafine （nano） cemented carbide are analyzed. The main problems and solutions during the preparation of ultrafine （nano） cemented carbide are also suggested. Finally, the development potential of each preparation method is discussed, and the development trend of ultrafine （nano） cemented carbide is illustrated.