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通过电化学极化、静态浸泡等方法研究了真空吸铸态高铝、高铁青铜合金Cu-15Al-x Fe(x=10,12,15,质量分数)在3.5%(质量分数)Na Cl溶液中的腐蚀行为,用扫描电镜及能谱仪对亚快速凝固合金腐蚀前后微观组织和腐蚀形貌进行了观察,分析了铝青铜合金的腐蚀机理及Fe含量对铝青铜合金耐蚀性的影响。结果表明:在3.5%Na Cl溶液中,Cu-15Al-x Fe合金中的富铁相与基体相比,具有明显的优先腐蚀倾向,合金主要发生脱Al和Fe选择性腐蚀,这主要是由于富铁相组织中Al和Fe含量高于基体组织所致。其中,Fe含量为12%时合金的耐蚀性最好。
Electrochemical polarization and static soaking were used to study the effects of vacuum as-cast high-alumina and high-iron bronze alloy Cu-15Al-xFe (x = 10,12,15) on 3.5% NaCl solution The corrosion behavior of the sub-rapid solidification alloy was observed by SEM and EDS. The corrosion mechanism of the aluminum bronze alloy and the effect of Fe content on the corrosion resistance of the aluminum bronze alloy were analyzed. The results show that the iron-rich phase in Cu-15Al-xFe alloy has a significant preferential corrosion tendency in 3.5% NaCl solution, and the alloy mainly undergoes selective Al and Fe corrosion, which is mainly due to The content of Al and Fe in iron-rich phase is higher than that of matrix. Among them, the corrosion resistance of the alloy is the best when the content of Fe is 12%.