摘要
超细晶硬质合金是WC晶粒度≤0.5μm的硬质合金,这类合金具有高强度和高硬度的优异性能。目前由超细晶硬质合金制备的高效刀具已经广泛用于航空航天、核能、汽车、发电设备、新能源和电子通讯等现代制造业。主要对中国超细晶硬质合金原料(例如超细碳化钨粉、钴粉、复合粉)和超细晶硬质合金制备技术、性能及表征方法作了系统的阐述。最后对超细晶硬质合金制备技术进行了展望。
The sintered WC-Co with uhrafine grain sizes （ 〈 0. 5 rim） is called ultrafine cemented carbide, which pos- sesses optimized properties such as hardness and strength. Efficient tools prepared by uhrafine cemented carbides have been used in aerospace, nuclear energy, automotive, generating equipment, new energy and other fields of electronic communications. The development of uhrafine cemented carbides and raw materials was systematically introduced and reviewed, mainly in aspects of the preparation, property and characterization of uhrafine tungsten carbide powder, ultrafine cobalt powder, WC-Co composite powder and ultrafine cemented carbides in China. Prospects on technology of the ultra-fine cemented carbide were discussed finally.
出处
《中国材料进展》
CAS
CSCD
2012年第4期39-46,共8页
Materials China
基金
国家科技重大专项(20092x04012-032)
国家科技支撑计划资助项目(2007BAE05B02)
关键词
超细晶
硬质合金
碳化钨
钴粉
球形度
uhrafine crystal
cemented carbide
tungsten carbide
cobalt powder
sphericity
