摘要
通过静态浸泡腐蚀、电化学腐蚀实验等方法研究了真空吸铸态高铝高铁青铜合金Cu-15Al-XFe(X=10,12,15)在5.0%H2SO4溶液中的腐蚀行为,利用扫描电镜对合金腐蚀前后微观金相组织和腐蚀形貌进行了观察,讨论了铝青铜合金的腐蚀机理及合金元素Fe的含量对铝青铜合金耐蚀性的影响。结果表明:在5.0%H2SO4溶液中,Cu-15Al-XFe合金有良好的耐蚀性,合金中的晶界与基体相和富铁相相比,具有优先腐蚀倾向,合金主要发生脱铝脱铁选择性腐蚀。其中,Cu-15Al-12Fe铝青铜合金具有最好的耐蚀性。
Using electrochemistry test and static immersing corrosion test, the corrosion behavior of Cu-15Al-XFe（X= 10, 12, 15） aluminum bronzes made with vacuum suction in 5.0%H2SO4 solution were investigated. The microstructure of aluminum bronze before and after corroded were observed by SEM. The corrosion mechanism and the effects of Fe content on the corrosion resistance were discussed in detail. The results show that the corrosion resistance of Cu-15Al-XFe alloy is well in 5.0%H2SO4 solution. The grain boundary suffers a dealuminization attack, which is superior to matrix and iron-rich phase. Cu-15Al-XFe（X=10, 12, 15） aluminum bronzes suffer dealuminization and deferrization selective corrosion. When Fe content is 12%, the corrosion resistance of the alloy is best.
出处
《热加工工艺》
CSCD
北大核心
2012年第8期68-71,共4页
Hot Working Technology
关键词
铝青铜
腐蚀
腐蚀速率
耐蚀性能
脱铝脱铁
aluminum bronze
corrosion
corrosion rate
corrosion resistance
dealuminization and deferrization
