Nano ZrO_(2) Particulate-reinforced Lead-Free Solder Composite  

作　　者：Jun SHEN Yongchang LIU Dongjiang WANG Houxiu GAO 

机构地区：[1]College of Materials Science ＆ Engineering,Tianjin University, Tianjin 300072, China

出　　处：《Journal of Materials Science & Technology》2006年第4期529-532,共4页材料科学技术（英文版）

基　　金：The authors are grateful to the National Natural Science Foundation of China （No. 50401033）;FANEDD of China （No. 200335）;the Natural Science Foundation of Tianjin City （No. 033608811） ; Fok Ying Tong Education Foundation （No. 104015） for grant and financial support.

摘　　要：A lead-free solder composite was prepared by adding ZrO2 nanopowders in eutectic Sn-Ag alloy. Microstrucrural features and microhardness properties of those solders with different ZrO2 nanopowder fraction were examined. Results indicate that the addition of ZrO2 nanopowders reduced the size of β-Sn grains and restrained the formation of bulk Ag3Sn intermetallic compounds （IMCs） due to the adsorption effect of the ZrO2 particles. The Vicker＇s hardness of the obtained lead-free solder composites fits well with the HalI-Petch relationship. The refinement of β-Sn grains favors to improve the microhardness of composite solders.A lead-free solder composite was prepared by adding ZrO2 nanopowders in eutectic Sn-Ag alloy. Microstrucrural features and microhardness properties of those solders with different ZrO2 nanopowder fraction were examined. Results indicate that the addition of ZrO2 nanopowders reduced the size of β-Sn grains and restrained the formation of bulk Ag3Sn intermetallic compounds （IMCs） due to the adsorption effect of the ZrO2 particles. The Vicker＇s hardness of the obtained lead-free solder composites fits well with the HalI-Petch relationship. The refinement of β-Sn grains favors to improve the microhardness of composite solders.

关 键 词：ZrO2 nanopowders Microstructure Composite solder MICROHARDNESS 

分 类 号：TG42[金属学及工艺—焊接] TB383[一般工业技术—材料科学与工程]