Decrease in Pitting Corrosion Resistance of Extra-High-Purity Type 316 Stainless-Steel by Cu2+ in NaCl
Decrease in Pitting Corrosion Resistance of Extra-High-Purity Type 316 Stainless-Steel by Cu2+ in NaCl
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DOI：
10.3390/met11030511
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发表时间：
2021-03-01
期刊：
影响因子：
2.9
通讯作者：
Ueno, Fumiyoshi
中科院分区：
文献类型：
--
作者：
Aoyama, Takahito;Ogawa, Hiroaki;Ueno, Fumiyoshi
研究了溶液中Cu 2+对超高纯316不锈钢抗点蚀性能的影响。点蚀发生在0.1 M NaCl-1 mM CuCl 2中，而点蚀在0.1 M NaCl中不开始。虽然沉积的Cu 2+在表面上发生的潜在区域，无论在0.1 M NaCl-1 mM CuCl 2，Cu 2+在本体溶液中没有影响的钝化膜的形成。在0.1 M NaCl-1 mM CuCl 2中的耐点蚀性的降低是由于沉积的Cu或Cu化合物和在表面上的Cu 2+的连续供应。
The effect of Cu2+ in bulk solution on pitting corrosion resistance of extra-high-purity type 316 stainless-steel was investigated. Pitting occurred in 0.1 M NaCl-1 mM CuCl2, whereas pitting was not initiated in 0.1 M NaCl. Although deposition of Cu2+ on the surface occurred regardless of a potential region in 0.1 M NaCl-1 mM CuCl2, Cu2+ in bulk solution had no influence on the passive film formation. The decrease in pitting corrosion resistance in 0.1 M NaCl-1 mM CuCl2 resulted from the deposited Cu or Cu compound and continuous supply of Cu2+ on the surface.