淡水用Al-Sn-Bi-Mn合金牺牲阳极性能  

Properties of Al-Sn-Bi-Mn Sacrificial Anode Used for Freshwater

作　　者：马正青[1] 庞旭[1] 左列[1] 

机构地区：[1]中南大学材料科学与工程学院,长沙410083

出　　处：《腐蚀与防护》2010年第6期447-449,485,共4页Corrosion & Protection

摘　　要：采用扫描电子显微镜、能谱分析、金相显微镜及电化学性能测试等方法研究了Sn含量及热处理对Al-Sn-Bi-Mn合金组织及电化学性能的影响。结果表明,含1.0%Sn的Al-Sn-Bi-Mn铝合金牺牲阳极在淡水中具有良好的电化学性能,电流效率为45.2%,经580℃10 h固溶、150℃6 h时效热处理后,电流效率达到51.3%,且腐蚀均匀,产物易脱落。The effects of Sn content and heat treatment on microstructure and electrochemical properties of Al-Sn-Bi-Mn alloys had been studied by means of scanning electron microscopy（SEM）,energy dispersive spectrometer（EDS）,photograph microscopy and electrochemical test.The results showed that the aluminum alloy containing 1.0% Sn had satisfying electrochemical performance in freshwater,and its current efficiency reached 45.17%.After solution treatment at 580 ℃for 10 h and aging treatment at 150 ℃ for 6 h,the current efficiency of the sample increased to 51.33%.The corrosion of the sample surface was uniform and the corrosion products were shed easily.

关 键 词：铝合金 牺牲阳极 热处理 

分 类 号：TG174.41[金属学及工艺—金属表面处理]