钌粉粒度对硬质合金性能的影响研究  

Study on Effect of Ruthenium Powder Particle Size on Properties of Hard Alloys

作　　者：李代刚 何清勇 杨万夏 朱国丽 贾喜庆 周应涛 Li Daigang;He Qingyong;Yang Wanxia;Zhu Guoli;Jia Xiqing;Zhou Yingtao(Chengdu Tool Research Institute Co.,Ltd.,Chengdu 610500,China;不详)

机构地区：[1]成都工具研究所有限公司

出　　处：《工具技术》2024年第7期70-73,共4页Tool Engineering

基　　金：中央在川高校院所重大科技成果转化项目(2022ZHCG0134)。

摘　　要：分别添加不同粒度钌粉制备硬质合金,采用光学金相显微镜、洛氏硬度计、抗弯强度检测仪、扫描电镜及能谱分析等方法对比研究了添加不同粒度钌粉硬质合金的性能和钌在钴中的固溶量。结果表明:随着钌粉粒度的降低,合金的抗弯强度、洛氏硬度和断裂韧性均有所提高,钌粉越细,增幅越大;随着钌粉粒度的降低,钌在β相中的固溶量有明显提高;添加不同粒度钌粉制备的硬质合金显微组织无明显差异,金相无异常。Different particle sizes of ruthenium powder are added to prepare hard alloys.The properties of hard alloys with different particle sizes of ruthenium powder and the solid solution of ruthenium in cobalt are compared and studied using optical metallographic microscopy,rockwell hardness tester,bending strength tester,scanning electron microscopy,and energy spectrum analysis.The results show that as the particle size of ruthenium powder is decreased,the bending strength,rockwell hardness and fracture toughness of the alloy all are increased,and the finer the ruthenium powder is,the more significant the improvement is.As the particle size of ruthenium powder is decreased,rutheniumβof the solid solution content in the phase is increased significantly.There is no significant difference in the microstructure of the hard alloy prepared by adding ruthenium powder with different particle sizes,and the metallographic phase is uniform without any abnormalities.

关 键 词：钌粉 粒度 固溶度 贵金属 硬质合金 

分 类 号：TG135.5[一般工业技术—材料科学与工程] TH140.7[金属学及工艺—合金]