非均匀结构WC－Co硬质合金

ON WC-Co CEMENTED CARBIDES WITH NON-HOMOGENEOUS STRUCTURE

对采用碳化烧结法制取非均匀结构硬质合金的工艺进行了研究，结果表明，碳化烧结工艺可制得非均匀结构ＷＣ－Ｃｏ硬质合金，配Ｃ量以６．０％～６．１％（质量分数）较好，最佳烧结温度为１４２０～１４５０℃，ＷＣ－１０％Ｃｏ（质量分数）合金的抗弯强度σｂｂ可达２６００～２９００ＭＰａ，密度ρ为１４．４～１４．６ｇ／ｃｍ３，硬度ＨＲＡ为８８．２～８９．９．此外，还可以获得ＷＣ＜ｌμｍ的合金。

A new technique,called carbusintering processing factors on the properties of cementedcarbides was studied.It was found that carbusintering techniques can be used to producenon-homogeneous structure WC-Co cemented carbides;6.0%～6.1%carbon content is bet-ter。The best sintering temperature is l420～1450℃。WC-10%Co alloy′s σbb can achieve2600～2900 MPa,p 14.4～14.6g/cm3,HRA 88.2～89.9,and WC<1 μm alloy can also beobtained。