| 304奥氏体不锈钢在硝酸溶液体系中的电化学腐蚀行为 |
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| 引用本文： | 王祥丽,吴继宗,谈树苹,朱海巧. 304奥氏体不锈钢在硝酸溶液体系中的电化学腐蚀行为[J]. 核化学与放射化学, 2017, 39(3): 223-226. DOI: 10.7538/hhx.2017.39.03.0223 |
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| 作者姓名： | 王祥丽 吴继宗 谈树苹 朱海巧 |
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| 作者单位： | 中国原子能科学研究院 放射化学研究所，北京102413 |
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| 摘 要： | 采用极化曲线测量法对304不锈钢在硝酸溶液体系中的电化学耐蚀性能进行了测试,分别研究了在硝酸溶液中添加硝酸盐、草酸、乙酸、柠檬酸等成分对304不锈钢电化学腐蚀行为的影响。结果表明,在硝酸溶液中,硝酸盐的加入能够抑制不锈钢的电化学腐蚀,而草酸能够显著增强溶液对不锈钢的电化学腐蚀能力,在硝酸和草酸溶液体系中加入1g/L柠檬酸后,自腐蚀电流由6.02μA/cm~2上升到22.8μA/cm~2,对电流腐蚀有较明显的促进作用。
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| 关 键 词： | 304奥氏体不锈钢 硝酸 电化学腐蚀 |
Electrochemical Corrosion of 304 Austenitic Stainless Steel in Nitric Acid Solutions |
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| WANG Xiang-li,WU Ji-zong,TAN Shu-ping,ZHU Hai-qiao. Electrochemical Corrosion of 304 Austenitic Stainless Steel in Nitric Acid Solutions[J]. Journal of Nuclear and Radiochemistry, 2017, 39(3): 223-226. DOI: 10.7538/hhx.2017.39.03.0223 |
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| Authors: | WANG Xiang-li WU Ji-zong TAN Shu-ping ZHU Hai-qiao |
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| Affiliation: | China Institute of Atomic Energy, P. O. Box 275(26), Beijing 102413, China |
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| Abstract: | The effect of nitric acid solutions with different kinds of chemical constituents on the electrochemical corrosion of 304 austenitic stainless steel was investigated.The study was carried out using potentiodynamic cyclic polarization measurements.Electrochemical measurements indicate that nitrate in nitric acid solution impairs the electrochemical corrosion of 304 austenitic stainless steel,while oxalic acid substantially promotes the electrochemical corrosion of 304 stainless steel.The results also show that after adding 1 g/L citric acid,the corrosion current increases from 6.02 μA/cm2 to 22.8 μA/cm2,indicating an apparent promotion of electrochemical corrosion. |
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| Keywords: | 304 austenitic stainless steel nitric acid electrochemical corrosion |
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