Abstract By the artificial pit electrode approach, growth behaviours of stable pits for melt-spun Zr 60 Ni 25 Al 15 and Zr 60 Cu 25 Al 15 metallic glasses (MGs) exposed to a 0.6 M NaCl solution are investigated. By characterising the current transient events and growth kinetics parameters, the effect of selective dissolution caused by the late transition metals on the pitting growth kinetics is revealed. The pit solution acidity is estimated with local acidification model. It is shown that the stable pitting growth for Zr 60 Cu 25 Al 15 MG is considerably more favourable compared to Zr 60 Ni 25 Al 15 , because of its more rapid pit growth rate and more aggressive pit solution.

中文翻译：

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暴露于 0.6 M NaCl 水溶液的 Zr 60 Ni 25 Al 15 和 Zr 60 Cu 25 Al 15 金属玻璃点蚀生长动力学的差异

摘要 通过人工凹坑电极方法，研究了熔纺Zr 60 Ni 25 Al 15 和Zr 60 Cu 25 Al 15 金属玻璃(MGs)在0.6 M NaCl溶液中稳定凹坑的生长行为。通过表征当前的瞬态事件和生长动力学参数，揭示了晚期过渡金属引起的选择性溶解对点蚀生长动力学的影响。用局部酸化模型估计坑溶液酸度。结果表明，与 Zr 60 Ni 25 Al 15 相比，Zr 60 Cu 25 Al 15 MG 的稳定点蚀生长明显更有利，因为其更快速的蚀坑生长速率和更积极的蚀坑溶液。