Abstract：The corrosion rate and pitting behavior of traditional and corrosion-resisting low alloy steel in strongly acidic solution containing chloride ion were investigated at different temperatures， according to the test method of Performance Standard for Corrosion Resistant Steel Cargo Oil Tanks of Crude Oil Tankers adopted by International Maritime Organization （IMO）. The results indicated that corrosion rates of the anti-corrosion steel， which contained Cu and Ni elements， were decreased by more than 90% at most compared to conventional steel under various temperatures. Furthermore， anti-corrosion steel could decrease the number of pitting and suppress pitting extension. The granular corrosion products which were white and partly located in the pitting were turned out to be Cu deposition. The Cu redeposit particles which covered the surface and inside the pitting， made the corrosion potential higher. The Cu redeposit particles on the specimens surface and inside the pits suppressed the extension of the pitting to the deeper.
收稿日期: 2016-11-08
出版日期: 2017-06-09
引用本文:
李 灏，柴 锋，杨才福，苏 航，罗小兵. 强酸性氯离子环境下低合金钢的点蚀行为[J]. 钢铁, 2017, 52(6): 76-82.
LI Hao，CHAI Feng，YANG Cai-fu，SU Hang，LUO Xiao-bing. Pitting corrosion of low alloy steel in environment of strongly acidic solution containing chloride ion. Iron and Steel, 2017, 52(6): 76-82.
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2017, Vol. 52 
