稀土氧化铈(CeO_2)与铸态Cu-Ni-Si合金性能  

Effect of CeO_2 on Properties of As-cast Cu-Ni-Si Alloy

作　　者：柳瑞清[1] 谢春晓[1] 

机构地区：[1]江西理工大学材料与化学工程学院,江西赣州341000

出　　处：《铸造技术》2007年第10期1344-1346,共3页Foundry Technology

基　　金：江西省自然基金资助项目(No.550033)

摘　　要：在Cu-Ni-Si合金中加入稀土氧化铈(CeO2),研究稀土氧化铈(CeO2)量对铸态Cu-Ni-Si合金组织与性能的影响。结果表明:适量添加稀土氧化铈(CeO2)能显著细化铸态合金的晶粒,提高合金抗拉强度,对电导率则影响较小。在合金中添加0.06%稀土氧化铈的Cu-Ni-Si材料,铸态条件下的抗拉强度可达411MPa,比未加稀土的合金材料的抗拉强度提高了40.7%。过量添加稀土,合金的晶粒尺寸并不能继续细化,却显著降低材料的抗拉强度。The effect of rare-earth oxide （CeO2） additive on the microstructure and properties of ascast Cu-Ni-Si alloy was studied. The results show that the CeO2 addition has an obvious effect on the microstructure and properties of Cu-Ni-Si alloy. The appropriate addition can refine grains significantly and increase the tensile strength, and has a slight effect on the electrical conductivity. The tensile strength of as-cast Cu-Ni-Si alloy with 0.06% CeO2 addition can increase 40.7% than that of as-cast Cu-Ni-Si alloy without CeO2 addition, which can reach 411 MPa. The excess CeO2 addition can not refine the grains further, but decreases the tensile strength significantly.

关 键 词：稀土氧化铈(CeO2) Cu—Ni—Si合金 抗拉强度 电导率 

分 类 号：TG291[金属学及工艺—铸造]