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粗糙度在316L不锈钢小孔初期生长过程中的作用

DOI: 10.11903/1002.6495.2013.391, PP. 505-510

Keywords: 316L不锈钢,亚稳态孔蚀,粗糙度,孔蚀电位

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Abstract:

通过分析不同粗糙度下的316L不锈钢在0.01mol/LNaCl溶液中小孔腐蚀早期的电流波动,研究了粗糙度与不锈钢亚稳态孔蚀电位Em和稳定孔蚀电位Eb之间的关系,以及粗糙度(Ra)对亚稳态小孔生长机制的影响。结果表明,Em和Eb均随Ra的对数的增大而线性下降;Ra增大,亚稳孔的平均形核率和平均寿命增大,生长速率变化不大,但是同样的生长速率下粗糙表面的亚稳孔具有更强的可持续生长能力,加之高的形核频率导致强的腐蚀累积效应促进了亚稳态小孔向稳定孔的转变。

References

[1]  Frankel G S, Stockert L, Hunkeler F. Metastable pitting of stainless steel [J]. Corrosion, 1987, 43 (7): 429
[2]  左禹, 王海涛. 金属亚稳态孔蚀行为的电化学研究 [J]. 腐蚀科学与防护技术, 1999, 11(1): 34
[3]  Pourbaix M, Klimzack-Mathieiu L, Mertens C H. Potentiokinetic and corrosimetric investigations of the corrosion behaviour of alloy steels [J]. Corros. Sci., 1963, 3(4): 239
[4]  王海涛, 左禹, 熊金平. 表面粗糙度对316L不锈钢亚稳态孔蚀行为的影响 [J]. 中国腐蚀与防护学报,2002, 22(3): 158
[5]  Arash S, Walid K, Sasha O. The effect of surface roughness on the efficiency of the cyclic potentiodynamic passivation (CPP) method in the improvement of general and pitting corrosion resistance of 316VM stainless steel [J]. Mater. Lett., 2008, 62: 3906
[6]  Coates G E. Effect of some surface treatments on corrosion of stainless steel [J]. Mater. Performance, 1990, 29(8): 61
[7]  Sasaki K, Burstein G T. The generation of surface roughness during slurry erosion-corrosion and its effect on the pitting potential [J]. Corros. Sci., 1996, 38(12): 2111
[8]  Hong T, Nagumo M. Effect of surface roughness on early stages of pitting corrosion of type 301 stainless steel [J]. Corros. Sci., 1997, 39(9): 1665
[9]  Burstein G T, Pistorius P C. Surface roughness and the metastable pitting of stainless steel in chloride solutions [J]. Corrosion, 1995, 51(5): 380
[10]  Suter T, Müller Y, Schmutz P. Microelectrochemical studies of pit initiation on high purity and ultra high purity aluminum [J]. Adv. Eng. Mater., 2005, 7(5): 339
[11]  Li W, Li D Y. Influence of surface morphology on corrosion and electronic behavior [J]. Acta Mater., 2006, 54: 445
[12]  Walter R, Bobby K M. Influence of surface roughness on the corrosion behavior of magnesium alloy [J]. Mater. Des., 2011, 32: 2350
[13]  Zuo Y, Wang H T, Xiong J P. The aspect raio of surface grooves and metastalbe pitting of stainless steel [J]. Corros. Sci., 2002, 44: 25
[14]  左禹, 符适. 表面粗糙度对非晶态合金亚稳态小孔形核和生长的影响 [J]. 北京科技大学学报, 1996, 18(增刊): 11
[15]  Malki B, Baroux B. Computer simulation of the corrosion pit growth [J]. Corros. Sci., 2005, 47: 171
[16]  Roxanna B A, Holly J M, Horstemeyer M F, et al. Corrosion relationships as a function of time and surface roughness on a structural AE44 magnesium alloy [J]. Corros. Sci., 2010, 52: 1635
[17]  Tang Y M, Zuo Y. The metastable pitting of mild steel in bicarbonate solutions [J]. Mater. Chem. Phys., 2004, 88: 221

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