Corrosion Behavior of Super 13Cr Tubing Steel in Cl- Solution and Electrochemical Characteristics of Corrosion Film on Its Surface
摘 要
在室温不同质量分数(5%~35%)NaCl溶液中对超级13Cr油管钢进行浸泡腐蚀试验,研究了该钢的腐蚀形貌、腐蚀速率、腐蚀产物及其表面腐蚀膜的电化学特性。结果表明:试验钢在NaCl溶液中具有较好的耐蚀性;随NaCl质量分数的增加,其耐蚀性降低,当NaCl质量分数大于25%时变化尤为显著,腐蚀形式由局部腐蚀发展为全面腐蚀,腐蚀产物主要为Fe3O4,腐蚀膜疏松不致密;腐蚀膜的极化曲线存在钝化区,具有钝化特性,在低频区的电极过程为扩散控制,在高频区则为电荷传递控制,其阻抗由一个时间常数确定。
Abstract
Immersion corrosion tests in NaCl solutions with different NaCl mass fractions (5%-35%) were conducted on super 13Cr tubing steel at room temperature. Corrosion morphology, corrosion rate, corrosion products of the steel and electrochemical characteristics of its surface corrosion film were studied. The results show that the tested steel had relatively good corrosion resistance in NaCl solution. The corrosion resistance decreased with increasing mass fraction of NaCl and the decline was obvious when the NaCl mass fraction increased over 25%. With increasing NaCl mass fraction, the corrosion form changed from local corrosion to general corrosion. The corrosion products were composed of Fe3O4,and the corrosion film was loose and not dense. The polarization curves of the corrosion film had a passivation zone, indicating that the film had passivation characteristics. The electrode process in the low-frequency zone was diffusion control, and that in the high-frequency zone was charge transfer control. The impedance of the corrosion film was determined by a time constant.
中图分类号 TG178 DOI 10.11973/jxgccl201905003
所属栏目 试验研究
基金项目 陕西省教育厅科研计划项目(2018JK0396)
收稿日期 2018/5/11
修改稿日期 2019/4/12
网络出版日期
作者单位点击查看
备注姚小飞(1978-),男,陕西西安人,讲师,博士
引用该论文: YAO Xiaofei,TIAN Wei,XIE Faqin. Corrosion Behavior of Super 13Cr Tubing Steel in Cl- Solution and Electrochemical Characteristics of Corrosion Film on Its Surface[J]. Materials for mechancial engineering, 2019, 43(5): 12~16
姚小飞,田伟,谢发勤. 超级13Cr油管钢在含Cl-溶液中的腐蚀行为及其表面腐蚀膜的电化学特性[J]. 机械工程材料, 2019, 43(5): 12~16
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参考文献
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【4】姚小飞,谢发勤,韩勇,等.温度对TC4钛合金磨损性能和摩擦系数的影响[J].稀有金属材料与工程,2012,41(8):1463-1466.
【5】YIN Z F, ZHAO W Z, TIAN W, et al. Pitting behavior on super 13Cr stainless steel in 3.5% NaCl solution in the presence of acetic acid[J]. Journal of Solid State Electrochemistry, 2009, 13(8):1291-1296.
【6】李鹤林,韩礼红,张文利.高性能油井管的需求与发展[J].钢管,2009,38(1):1-9.
【7】SIDORIN D, PLETCHER D, HEDGES B. The electrochemistry of 13% chromium stainless steel in oilfield brines[J]. Electrochimica Acta, 2005, 50(20):4109-4116.
【8】陈长风, 姜瑞景, 张国安, 等. 镍基合金管材高温高压H2S/CO2环境中局部腐蚀研究[J]. 稀有金属材料与工程, 2010, 39(3):427-432.
【9】NICE P I, MARTIN J W. Application limits for super martensitic and precipitation hardened stainless steel bar-stock materials[C]//Corrosion 2005. Houston:NACE International, 2005:NACE-05091.
【10】MARCHEBOIS H, LEYER J, ORLANS-JOLIET B. SSC performance of a super 13%Cr martensitic stainless steel for OCTG:Three-dimensional fitness-for-purpose mapping according to PH2S, pH and chloride content[C]//Corrosion 2007. Houston:NACE International, 2007:NACE-07090.
【11】MIYATA Y, KIMURA M, MASAMURA K. Effects of chemical components on resistance to intergranular stress corrosion cracking in super martensitic stainless steel[C]//Corrosion 2007. Houston:NACE International, 2007:NACE-07092.
【12】刘道新. 材料的腐蚀与防护[M]. 西安:西北工业大学出版社,2006:15-18.
【13】姚小飞, 谢发勤, 吴向清. pH值对超级13Cr钢在NaCl溶液中腐蚀行为与腐蚀膜特性的影响[J]. 材料工程, 2014, 42(3):83-89.
【14】姚小飞,田伟,谢发勤,等.超级13Cr和P110油管钢在NaCl溶液中电偶腐蚀行为的研究[J].材料导报,2017,31(6):166-169.
【15】TSAI W T, CHEN M S. Stress corrosion cracking behavior of 2205 duplex stainless steel in concentrated NaCl solution[J]. Corrosion Science, 2000, 42(3):545-559.
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