利用扫描隧道显微镜(STM)对QAl-9-2合金在3.5%NaCl溶液中脱合金腐蚀的早期过程进行了原位观察结合SEM,EDX分析表明,QAl-9-2合金的脱合金腐蚀首先发生在α基体和亚稳β相的界面,并在亚稳β相内继续扩展.α相不发生脱合金腐蚀.STM原位观察没有发现铜在表面再沉积的现象.
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