摘要
研究了加盖还原-高温碳化法制备超粗晶WC粉的工艺,即先将WO_3装入特殊舟皿中,在930~980℃下进行氢还原,然后在2 300℃下进行碳化。与传统中温还原-高温碳化法和掺杂还原-高温碳化法相比,加盖还原-高温碳化法制备的超粗晶WC粉颗粒发育更为饱满,晶粒尺寸更为粗大,粒度分布更为均匀,粉末结晶更为完整。本工艺制备的WC粉研磨粒度已达7.4μm,符合超粗晶WC的粒度要求。
The process was investigated of capping reduction-high temperature carbonization to prepare ultra-coarse grained WC powder.WO_3 is put into a special boat for hydrogen reduction at 930～980 ℃ at first and then carbonization at 2 300℃.Compared with the two processes of traditional medium temperature reduction-high temperature carbonization and doping reduction-high temperature carbonization,the process of capping reduction-high temperature carbonization can produce ultra-coarse grained WC powder with fuller particles,coarser grain size,more uniform particle size distribution and more complete crystal.WC powder prepared by this process has abrasive grain size of 7.4μm,reaching the requirement of ultra-coarse grained WC for grain size.
出处
《稀有金属与硬质合金》
CAS
CSCD
北大核心
2016年第2期13-17,共5页
Rare Metals and Cemented Carbides
关键词
超粗晶WC粉
研磨粒度
加盖还原
中温还原
掺杂还原
高温碳化
制备工艺
ultra-coarse grained WC powder
abrasive grain size
capping reduction
medium temperature reduction
doping reduction
high temperature carbonization
preparation process
