高能球磨制备纳米WC-8(Fe/Co/Ni)RE硬质合金研究

Study on Preparation of Nanometer Cemented Carbide WC-8(Fe/Co/Ni)RE by High Energy Ball Milling

用高能球磨法及真空烧结工艺制备纳米WC-8(Fe/Co/Ni)RE硬质合金。球磨时间、烧结工艺、稀土添加量对合金性能有重要影响,通过对球磨时间、烧结工艺、稀土添加量等环节的优化控制,在球磨60小时、1430℃烧结、加入Y占Co重量1%情况下,可制备出平均粒度为700nm左右、硬度达90.7HRA的纳米WC-8(Fe/Co/Ni)RE硬质合金。

In this paper, the nanometer cemented carbide WC-8 （Fe/Co/Ni）RE was prepared by using high energy ball milling and vacuum-sintering. The ball milling time, the sintering process and the content additive of rare earth had a significant impact. Through the optimization control of ball milling time, the sintering process and the content additive of rare earth, the nanometer WC-8 （Fe/Co/Ni） RE whose average granularity was 700nm and rigidity was 90.7HRA was prepared on the conditions of 60-hour ball milling time, 1430℃ sintering temperature and 1% additive rare earth.