研究了高温海水中Zn-Al-Cd合金的电化学性能,同时提出了一种假设解释锌合金阳极腐蚀行为.该假设认为:在热海水中,铝在晶界处一定程度的偏析能够活化锌合金阳极,但这种活化作用将随着铝含量的增加而减弱.此外,Zn-Al-Cd的晶间腐蚀与晶界处存在着活跃的铝有关,氢的扩散对晶间腐蚀的产生起着催化作用,并能使腐蚀加剧,这一机制能够很好地解释试验中的现象.文章还分析了电位波动曲线与腐蚀产物脱落难易的关系.
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