强酸性氯离子环境下低合金钢的点蚀行为

doi:10.13228/j.boyuan.issn0449-749x.20160498

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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.

Received: 08 November 2016 Published: 09 June 2017

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	Articles by authors
	LI Hao
	CI Feng
	YANG Cai-Fu
	SU Hang
	LUO Xiao-Bing

Cite this article:

LI Hao,CI Feng,YANG Cai-Fu等. Pitting corrosion of low alloy steel in environment of strongly acidic solution containing chloride ion[J]. Iron and Steel, 2017, 52(6): 76-82.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20160498 OR http://www.chinamet.cn/Jweb_gt/EN/Y2017/V52/I6/76

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