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材料工程  2015 

316L不锈钢在不同环境中点蚀形核研究

DOI: 10.11868/j.issn.1001-4381.2015.09.003, PP. 12-18

Keywords: 不锈钢,点蚀,形核,钝化膜,夹杂物

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Abstract:

通过人工海水中长期浸泡实验和循环伏安极化曲线测试,研究了温度、Cl-浓度、溶解氧浓度对抛光后的316L不锈钢点蚀形核的影响,确定了不锈钢在不同环境的人工海水中点蚀的萌生时间和位置。结果表明与温度和Cl-浓度的影响不同,溶解氧浓度的增加对不锈钢点蚀形核具有抑制作用。316L不锈钢在4℃,8×10-6溶解氧浓度,10%(质量分数)NaCl溶液中浸泡后表面出现钝化膜局部破坏,点蚀形核时间为60~70天,形核位置存在MgO-Al2O3系和CaO-SiO2系非金属夹杂物。不锈钢在4℃人工海水和0.02×10-6溶氧量浓度下浸泡后,表面出现点蚀的时间为70~80天。

References

[1]  郑家青,龚利华,郭为民,等.不同温度下溶解氧对304不锈钢在海水中腐蚀性能的影响[J].腐蚀与防护,2011,32(9):708-711. ZHENG Jia-qing, GONG Li-hua, GUO Wei-min, et al. Effect of temperature and dissolved oxygen on corrosion properties of 304 stainless steel in seawater[J]. Corrosion & Protection, 2011, 32(9): 708-711.
[2]  ZHENG J H, BOGAERTS W F, PHLIPPO K. Effects of dissolved oxygen and hydrogen peroxide on the corrosion potential of 316L stainless steel in hot lithium hydroxide solution[J]. Fusion Engineering and Design, 1994, 24(3): 299-307.
[3]  ZHANG T, WANG D Y, SHAO Y W, et al. A new criterion to determine the critical pitting temperature(CPT) based on electrochemical noise measurement[J]. Corrosion Science, 2012, 58(5): 202-210.
[4]  VENKATESHAN R, VENKATASAMY M A, BHASKARAN T A, et al. Corrosion of ferrous alloys in deep sea environments[J]. British Corrosion Journal, 2002, 37(4): 257-266.
[5]  ZHENG S J, WANG Y J, ZHANG B, et al. Identification of MNCr2O4 nano-octahedron in catalysing pitting corrosion of austenitic stainless steels[J]. Acta Mater, 2010, 58(15): 5070-5085.
[6]  辛森森,李谋成,沈嘉年.海水温度和浓缩度对316L不锈钢点蚀性能的影响[J].金属学报,2014,50(3):373-378. XIN Sen-sen, LI Mou-cheng, SHEN Jia-nian. Effect of temperature and concentration ratio on pitting resistance of 316L stainless steel in seawater[J]. Acta Metallurgica Sinica, 2014, 50 (3): 373-378.
[7]  GERINGER J, MACDONALD D D. Modeling fretting-corrosion wear of 316L SS against poly(methyl methacrylate) with the point defect model: fundamental theory, assessment, and outlook[J]. Electrochim Acta, 2012, 79(9): 17-30.
[8]  SAZOU D, SALTIDOU K, PAGITSAS M. Understanding the effect of bromides on the stability of titanium oxide films based on a point defect model[J]. Electrochim Acta, 2012, 76(8):48-61.
[9]  FATTAH-ALHOSSEINI A, SOLTANI F, SHIRSALIMI F. The semiconducting properties of passive films formed on AISI 316L and AISI 321 stainless steels: a test of the point defect model (PDM)[J]. Corrosion Science, 2012, 53: 3186-3192.
[10]  LIU J, ZHANG T, MENG G Z, et al. Effect of pitting nucleation on critical pitting temperature of 316L stainless steel by nitric acid passivation[J]. Corrosion Science, 2015, 91(2):232-244.
[11]  MENG G Z, LI Y, SHAO Y W, et al. Effect of Cl- on the properties of the passive films formed on 316L stainless steel in acidic solution[J]. Journal of Materials Science and Technology, 2014, 30(3): 253-258.
[12]  杜楠,叶超,田文明,等.304不锈钢点蚀行为的电化学阻抗谱研究[J].材料工程,2014,(6):68-73. DU Nan, YE Chao, TIAN Wen-ming,et al. 304 stainless steel pitting behavior by means of electrochemical impedance spectroscopy[J]. Journal of Materials Engineering, 2014,(6):68-73.
[13]  何宁,王桂林,段梦兰,等.深水油气田开发中的中深水输送概念[J].石油工程建设,2010,36(3):33-36. HE Ning, WANG Gui-lin, DUAN Meng-lan, et al. Concept of medium-depth pipeline transportation in deepwater oil and gas fields development[J]. Petroleum Engineering Construction, 2010, 36(3): 33-36.
[14]  EGHBALI F, MOAYED M H, DAVOODI A. Critical pitting temperature (CPT) assessment of 2205 duplex stainless steel in 0.1M NaCl at various molybdate concentration[J]. Corrosion Science, 2011, 53(1): 513-522.
[15]  刘莉,李瑛,王福会.钝性纳米金属材料的电化学腐蚀行为研究:钝化膜生长和局部点蚀行为[J].金属学报,2014,50(2):212-218. LIU Li, LI Ying, WANG Fu-hui. Electrochemical corrosion behavior of nanocrystallized materials: growth of passive film and local pitting corrosion[J]. Acta Metallurgica Sinica, 2014, 50(2): 212-218.
[16]  ERNST P, NEWMAN R C. Pit growth studies in stainless steel foils.Ⅰ. Introduction and pit growth kinetics[J]. Corrosion Science, 2002, 44(5): 927-941.
[17]  LECKIE H P, UHLIG H H. Environmental factors affecting the critical potential for pitting in 18-8 stainless steel[J]. Electrochem Soc, 1966, 113(12): 1262-1267.

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