| 304不锈钢在盐湖卤水中的腐蚀行为 |
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| 引用本文： | 董彩常,杨朝晖,张波,胡艳丽. 304不锈钢在盐湖卤水中的腐蚀行为[J]. 材料保护, 2011, 44(9): 32-34,92 |
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| 作者姓名： | 董彩常 杨朝晖 张波 胡艳丽 |
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| 作者单位： | 钢铁研究总院青岛海洋腐蚀研究所,山东青岛,266071 |
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| 基金项目： | 国家科技基础条件平台建设项目(2005DKA10400)资助 |
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| 摘 要： | 用腐蚀挂片试验方法研究了304不锈钢在盐湖卤水中暴露2a的腐蚀行为，井运用室内电化学试验方法研究了其电化学行为。结果表明：盐湖卤水浸泡2a后，304不锈钢腐蚀速率为0．0003mm／a，主要表现为点蚀，试样侧面加工缺陷处存在较深的点蚀坑；在卤水中浸泡768h后，304不锈钢表面钝化膜局部被破坏，出现点蚀孔。
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| 关 键 词： | 电化学腐蚀 304不锈钢 盐湖卤水 点蚀 |
Corrosion Behavior of 304 Stainless Steel in Saline Lake Brine |
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| DONG Cai-chang,YANG Zhao-hui,ZHANG Bo,HU Yan-li. Corrosion Behavior of 304 Stainless Steel in Saline Lake Brine[J]. Journal of Materials Protection, 2011, 44(9): 32-34,92 |
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| Authors: | DONG Cai-chang YANG Zhao-hui ZHANG Bo HU Yan-li |
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| Affiliation: | (Qingdao Research Institute for Marine Corrosion,Central Institute of Iron and Steel,Qingdao 266071,China). |
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| Abstract: | The corrosion behavior and electrochemical feature of 304 stainless steel in saline lake brine were studied by using outdoor exposure tests(up to 2 a of exposure) and indoor electrochemical test.It was found that the stainless steel exposed to field saline lake brine for 2 a had a corrosion rate of 0.000 3 mm/a.In this case,the corrosion process was dominated by pitting corrosion and deep pitting holes were formed at the side area with machined defects of the sample.After 768 h of indoor immersion in the same brine,the passivation film on the surface of the stainless steel was partly destructed leading to pitting holes. |
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| Keywords: | electrochemical corrosion 304 stainless steel saline lake brine pitting |
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