封隔器用两种铬钼钢在服役条件下的腐蚀行为
Corrosion Behavior of Two Cr-Mo Steels Used for Packers in Service Conditions
摘 要
研究了封隔器常用的两种铬钼钢35CrMo和42CrMo在不同温度和压力条件下的腐蚀行为，并考察了腐蚀前后两种材料力学性能的变化。通过失重法得出了两种材料在不同条件下的腐蚀速率。结果表明：在相同的温度、压力条件下，42CrMo试样的腐蚀速率比35CrMo试样的大；两种材料的腐蚀速率均随温度的升高先增加后下降，随压力的升高而增加;腐蚀前42CrMo试样的抗拉强度和抗弯曲强度都比35CrMo试样的大，表明42CrMo钢的力学性能要优于35CrMo钢的，但腐蚀后42CrMo试样力学性能的降低程度要比35CrMo试样的多，这表明腐蚀越严重，材料的力学性能损失越大。
腐蚀
力学性能
温度
压力
Cr-Mo steel
corrosion
mechanical property
temperature
pressure
Abstract
The corrosion behavior and mechanical performance of the two types of Cr-Mo steel 35CrMo and 42CrMo under different working conditions were studied. The results showed that the corrosion rate of the two metals increased at first and then decreased with the increase of the temperature, and increased with the increase of the pressure. In the same conditions of temperature and pressure, the corrosion rate of 42CrMo steel was larger than that of 35CrMo steel. And the tensile strength and bending strength of 42CrMo steel were larger than those of 35CrMo steel, however, the loss of tensile strength and bending strength of 42CrMo steel was more than that of 35CrMo steel due steel to the larger corrosion rate of 42CrMo steel.
中图分类号 TG172 DOI 10.11973/fsyfh-201611010
所属栏目 试验研究
基金项目 中国石油天然气股份有限公司重大科技项目（2014E-35）； 中国石油大学（华东）校科研启动基金（2014010574）
收稿日期 2015/7/23
修改稿日期
网络出版日期
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联系人作者胡松青(ccupc@163.com)
备注胡松青（1967-)，教授，博士，从事石油工业材料的腐蚀与防护研究,
引用该论文: HAN Xin-de,WANG Hong-bing,WANG Jian-ning,XIE Wei-yi,WANG Shao-bo,HU Song-qing. Corrosion Behavior of Two Cr-Mo Steels Used for Packers in Service Conditions[J]. Corrosion & Protection, 2016, 37(11): 904
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参考文献
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【3】APOSTOLOPOULOS C A,DEMIS S,PAPADAKIS V G. Chloride-induced corrosion of steel reinforcement-mechanical performance and pit depth analysis[J]. Construction and Building Materials,2013,38:139-146.
【4】WANG X X,GAO Y M,LI K,et al. Effect of yttrium on the corrosion behavior of 09CrCuSb alloy in concentrated sulphuric acid[J]. Corros Sci,2013,69(1):369.
【5】毛红艳,蔡庆伍,武会宾,等. 合金元素和碳含量对E36船板钢腐蚀行为的影响[J]. 腐蚀与防护,2013,34(6):499-502.
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【7】LIN G F,BAI Z Q,ZHAO X W. Effect of temperature and pressure on profile of CO2 corrosion scales on oil well steels[J]. China Petroleum Machinery,2005,33(2):1-4.
【8】孙海静,李瑛,王福会. 静水压力对一种低合金高强度钢腐蚀行为的影响[C]//2010年全国腐蚀电化学及测试方法学术会议. 杭州:[出版者不详],2010:1-7.
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