Y_2O_3对再生WC-8Co硬质合金组织的影响  

Effects of Y_2O_3 on Microstructure of Recycled WC-8Co Cemented Carbide

作　　者：杨艳玲[1] 冯亮[2] 陆德平[1] 彭文屹[2] 严武华 汤昌仁 熊华超 

机构地区：[1]江西省铜钨新材料重点实验室,江西省科学院,江西南昌330029 [2]南昌大学材料科学与工程学院,江西南昌330031 [3]江西江钨硬质合金有限公司,江西靖安330600

出　　处：《江西科学》2013年第5期642-646,共5页Jiangxi Science

基　　金：国家科技支撑计划课题(2011BAC10B04);国家自然科学基金(No.51101076);江西省科学院协同创新普惠项目(2013-xtph1-18;2013-xtph2-23)

摘　　要：以锌熔回收WC-Co复合粉末为原料,采用常规硬质合金生产工艺制备出不同Y2O3含量的再生WC-8Co硬质合金。通过激光粒度分析、SEM及EDS等方法研究了粉末的粒度、再生合金的组织及Y2O3在再生合金中的分布。研究结果表明:Y2O3的添加量为0.4%时,Y2O3可以显著改善再生硬质合金的组织;当Y2O3添加量为1.5%时,其再生硬质合金发生了严重的Y2O3偏聚现象。Y2O3的添加量是影响再生WC-8Co硬质合金组织的重要因素。The recycled WC-8Co cemented carbides with different Y2O3 content were prepared by conventional method by zinc-fusion reclaimed WC-Co composite powder. The particle size of raw ma- terial, microstructure and component distribution of the recycled cemented carbides were studied by Laser Particle Sizer, SEM and EDS, respectively. The results showed that when the adding amount of Y2O3 was 0. 4%, the Y2O3 could improve the microstructure of recycled cemented carbides. When the adding amount of Y2O3 was 1.5 %, a serious Y2O3 segregation phenomenon appeared in recycled cemented carbide. In summary, the adding amount of Y2O3 is a key factor that affects the microstruc- ture of recycled WC-SCo cemented carbide.

关 键 词：再生硬质合金 YG8 Y2O3 组织 

分 类 号：TB331[一般工业技术—材料科学与工程]