固溶温度对Al-Ga-Mg-Sn-Zn合金组织和电化学性能的影响  

Effect of solution temperature on microstructure and properties of Al-Ga-Mg-Sn-Zn alloy

作　　者：张乃方[1] 文九巴[1,2] 贺俊光[1,2] 高军伟[1] 单玉郎 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471023 [2]河南省有色金属共性技术协同创新中心,河南洛阳471023

出　　处：《材料热处理学报》2015年第5期112-116,共5页Transactions of Materials and Heat Treatment

基　　金：洛阳市科技发展计划(1301001A);河南省"新型有色金属材料"高校科技创新团队支持计划(2012IRTSTHN008)

摘　　要：对电池用阳极合金Al-0.1%Ga-1%Mg-0.1%Sn-1%Zn(mass%)分别在450、480、510和540℃保温4 h后水淬,研究了固溶温度对该合金组织和电化学性能的影响。结果表明,随着固溶温度的提高,合金中析出相颗粒逐渐变少、变小;固溶处理使合金的放电电位负移,析氢自腐蚀速率逐渐变小,其中,经510℃×4 h固溶水淬后,合金的放电电位相对最负,比铸态时负移约30 m V,析氢速率下降约27%,腐蚀较为均匀,综合性能较好。Al-0. 1% Ga-1% Mg-0. 1% Sn-1% Zn( mass%) anode alloy was treated by solution treatment at temperatures of 450,480,510 and 540 ℃ for 4 h,respectively,followed by quenching in water. Effects of solution temperature on microstructure and electrochemical properties of the alloy were investigated. The results show that less and smaller precipitates were obtained with the increase of solution temperature resulting in the smaller hydrogen evolution rate. The alloy treated with solution treatment exhibits better corrosion uniformity and more negative discharge voltage. Especially the alloy by solid solution treatment at 510 ℃ has better comprehensive properties with a negative shift of discharge voltage about 30 m V and its hydrogen evolution rate drops nearly 27% compared with the as-cast alloy.

关 键 词：阳极合金 固溶处理 组织 性能 

分 类 号：TG146.21[一般工业技术—材料科学与工程] TG166.3[金属学及工艺—金属材料]