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深海环境对纯镍腐蚀行为的影响III-静水压力对纯镍点蚀机制的影响

, PP. 239-244

Keywords: 静水压力,纯镍,形核,点蚀,随机分析

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Abstract:

利用光学显微镜、扫描电子显微镜和电化学测量方法研究纯镍在3.5%NaCl溶液中,静水压力为常压和8MPa条件下的腐蚀行为.结果表明,在常压和静水压力为8MPa条件下,纯镍钝化膜均为二维形核;8MPa的静水压力对纯镍的腐蚀行为有三方面的影响(1)降低纯镍的钝化膜形成速度;(2)抑制点蚀形成的B1过程,促进A3过程;(3)降低点蚀的产生概率.

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