稀土氧化物对硬质合金组织和机械性能的影响  

Effect of rare earth oxides on the microstructure and mechanical properties of cemented carbides

作　　者：陈慧[1] 李力[1] 刘兵[1] 涂铭旌[1] 

机构地区：[1]重庆文理学院重庆市粉末冶金工程技术中心,重庆永川402160

出　　处：《重庆文理学院学报（社会科学版）》2014年第2期12-15,共4页Journal of Chongqing University of Arts and Sciences（Social Sciences Edition)

基　　金：重庆市自然科学基金项目(CSTC2012JJYS0003);重庆文理学院校级科研项目(Y2012CJ61);重庆市教委科技项目(KJ131216);重庆市教委科技项目(KJ131220)

摘　　要：研究轻稀土氧化物(CeO2、La2O3、Nd2O3)及重稀土氧化物(Y2O3)对YG10硬质合金组织和机械性能的影响,并对稀土在硬质合金中的分布状态及作用机理进行探讨.结果表明,轻稀土氧化物的加入可提高合金的密度,重稀土氧化物的加入对提高合金抗弯强度有利,随稀土含量的增加,合金硬度下降.The influence of light rare earth oxides （CeO2, La2O3, Nd2O3 ） and heavy rare earth oxide （Y2O3） on the microstructure and mechanical properties of YG10 cemented carbides were studied. The distributions of rare earth elements in cemented carbides and the acting mechanism of rare earth elements were discussed. The results indicate that the density of cemented carbides was increased after adding light rare earth oxide and the bending strength was increased after adding heavy rare earth oxide, but the hardness was reduced with the rare earth oxides increasing.

关 键 词：稀土氧化物 硬质合金 性能 

分 类 号：TB331[一般工业技术—材料科学与工程]