Influence of applied potential on cavitation erosion behavior of type 316L stainless steel in sulfuric acid solution

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	Influence of applied potential on cavitation erosion behavior of type 316L stainless steel in sulfuric acid solution
	S. L. Jiang; Y. G. Zheng; S. Z. Luo; Z. M. Yao
	2006
发表期刊	Corrosion
ISSN	0010-9312
卷号	62 期号:2 页码:99-108
摘要	The influence of applied potential on the cavitation erosion (CE) behavior of Type 316L (UNS S31603) stainless steel in 0.05 mol/L sulfuric acid (H2SO4) solution was investigated by using a magnetostrictive-driven CE apparatus. Eight different potentials were selected according to the dynamic polarization curve. Mass loss at different potentials was measured after the tests. Electrochemical impedance spectroscopy (EIS) measurement at different potentials was carried out during each experiment at different intervals. The morphologies of the specimen surfaces were observed using scanning electron microscopy (SEM), and the roughness (Ra) of each surface was measured using a profilometer. The mass-loss results showed that cathodic protection could significantly decrease the CE rate, and the more negative the cathodic potential was, the higher protection efficiency was and the maximum cathodic protection efficiency could be more than 80%. The influence of applied anodic potential on the CE behavior could be classified into three types. First, the CE rate at potentials close to the corrosion potential was almost the same as that at the corrosion potential. The CE rate then decreased a lot in the passive region, and the protection efficiency (89.7%) was even a little higher than that of cathodic protection. Finally, the CE rate increased at higher passive potentials and became very high in the transpassive region. Extremely large electrochemical impedance was shown in the EIS plot at an applied potential of 0.2 V where the best anodic protection was achieved. The SEM, roughness, and EIS results were well in accordance with that of mass loss and provided more detailed information on the CE behavior. A model to describe the effect of the applied potential on CE was proposed.
部门归属	chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china.;zheng, yg (reprint author), chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china;icpmkaist@yahoo.com ygzheng@imr.ac.cn
关键词	Applied Potential Cavitation Erosion Electrochemical Impedance Spectroscopy Model Roughness Sulfuric Acid Type 316l Stainless Steel Electrochemical Impedance Spectroscopy Corrosion Behavior Slurry Coatings Alloy Wear
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WOS记录号	WOS:000235436300001
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34276
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. L. Jiang,Y. G. Zheng,S. Z. Luo,et al. Influence of applied potential on cavitation erosion behavior of type 316L stainless steel in sulfuric acid solution[J]. Corrosion,2006,62(2):99-108.
APA	S. L. Jiang,Y. G. Zheng,S. Z. Luo,&Z. M. Yao.(2006).Influence of applied potential on cavitation erosion behavior of type 316L stainless steel in sulfuric acid solution.Corrosion,62(2),99-108.
MLA	S. L. Jiang,et al."Influence of applied potential on cavitation erosion behavior of type 316L stainless steel in sulfuric acid solution".Corrosion 62.2(2006):99-108.