新型核壳结构纳米复合粉的制备  

Preparation of Ultrafine Core-shell Composite Powders

作　　者：廖立[1] 谢克难[1] 汪玉洁[1] 龙沁[1] 赖雪飞[1] 张星和[1] 

机构地区：[1]四川大学化学工程学院,成都610065

出　　处：《四川化工》2010年第1期4-5,共2页Sichuan Chemical Industry

摘　　要：采用液相还原法制备核壳结构WC@Co纳米复合粉。XRD、SEM和EDS表征结果表明复合粉为核壳结构(WC为核,Co为壳),得到了高分散性的硬质合金原料粉,为制备高强韧性的硬质合金打下坚实的基础。The WC-Co core-shell composite powders were prepared via a liquid phase reduction process. These composite materials were investigated by X-ray diffraction （XRD）, scanning electron microscope （SEM） and energy dispersive spectroscopy （EDS）. The core-shell structure （tungsten carbide coated with cobalt shell） was confirmed by the characterization results. A feasible approach would be provieded to prepare nano cemented carbide with higher strength and toughness.

关 键 词：核壳结构 WC@Co 液相还原法 

分 类 号：TB383.1[一般工业技术—材料科学与工程]