柠檬酸钝化9Cr1Mo钢在海洋大气环境中的耐蚀性
Corrosion Resistance of 9Cr1Mo Steel with Citric Acid Passivation in Marine Atmosphere Environment
摘 要
为了提高9Cr1Mo钢在海洋大气环境中的耐蚀性,采用柠檬酸和柠檬酸-氢氧化物复合钝化工艺对9Cr1Mo钢进行表面钝化处理,研究了两种钝化处理对其耐蚀性的影响,分析了柠檬酸钝化处理提升9Cr1Mo钢耐海洋大气腐蚀性能的原因。结果表明:未钝化处理的9Cr1Mo钢在模拟和实际海洋大气环境中均发生严重腐蚀;两种钝化处理后9Cr1Mo钢表面均形成了保护性钝化膜,确保9Cr1Mo钢在海洋大气环境中腐蚀78d内不发生明显腐蚀,显著提高了9Cr1Mo钢耐海洋大气腐蚀性能;采用柠檬酸和柠檬酸-氢氧化物复合钝化工艺可以提高钝化膜中Cr2O3、Cr(OH)3含量,且氧化物含量显著高于氢氧化物,钝化膜的稳定性和耐蚀性增强。
钝化处理
钝化膜
耐蚀性
盐雾
海洋大气腐蚀
9Cr1Mo steel
passivation treatment
passive film
corrosion resistance
salt spray
marine atmospheric corrosion
Abstract
In order to improve the corrosion resistance of 9Cr1Mo steel in marine atmospheric environment, the citric acid passivation and citric acid-hydroxide composite passivation were selected to passivate the 9Cr1Mo steel. Their effects on the corrosion performance of 9Cr1Mo steel were investigated, and the reasons for the enhanced corrosion resistance of 9Cr1Mo steel treated by citric acid passivation treatments were analyzed. The results showed that the 9Cr1Mo steel without passivation treatment underwent serious corrosion in both simulated and real marine atmospheric environments. The protective passive film was able to be formed on the surface of 9Cr1Mo steel by two kinds of passivation treatments, which ensured that the passivated 9Cr1Mo steel did not be corroded within 78 days in the real marine atmosphere. The corrosion resistance of 9Cr1Mo steel in marine atmospheric was remarkably enhanced by passivation treatments. Citric acid and citric acid-hydroxide composite passivation process could increase the content of Cr2O3, Cr(OH)3 and oxides in passivation film, and those content was significantly higher than that of hydroxide, thereby improving the stability and corrosion resistance of the passive film.
中图分类号 TG174 DOI 10.11973/fsyfh-202212009
所属栏目 试验研究
基金项目 中国海油石油集团有限公司-关键技术攻关项目(CN00C-KJGJHXJSGGYF2020-01)
收稿日期 2022/6/2
修改稿日期
网络出版日期
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引用该论文: CHENG Wenjia,YAN Xianglin,ZHOU Huan,MAN Zongtong,JIN Haonan,SUN Jianbo. Corrosion Resistance of 9Cr1Mo Steel with Citric Acid Passivation in Marine Atmosphere Environment[J]. Corrosion & Protection, 2022, 43(12): 54
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【3】CHOI K H,LEE C S,RYU D M,et al. Comparison of computational and analytical methods for evaluation of failure pressure of subsea pipelines containing internal and external corrosions[J]. Journal of Marine Science and Technology,2016,21(3):369-384.
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【5】赵晋斌,赵起越,陈林恒,等. 不同表面处理方式对300M钢在青岛海洋大气环境下腐蚀行为的影响[J]. 中国腐蚀与防护学报,2019,39(6):504-510.
【6】林泽泉,郭志,林斌,等. 核电厂不锈钢设备电化学钝化技术[J]. 腐蚀与防护,2013,34(7):605-608,612.
【7】张强,孔韦海,万章,等. 不同钝化工艺对S22053不锈钢腐蚀行为的影响[J]. 材料保护,2020,53(6):115-120.
【8】滕琳琳,陈永君,钟嘉彬,等. 增强不锈钢表面耐蚀性的研究进展[J]. 辽宁科技大学学报,2021,44(5):328-340.
【9】张瑜,孔令真,路伟,等. 在硝酸溶液中不锈钢表面钝化膜的电化学特性[J]. 腐蚀与防护,2018,39(12):906-911.
【10】TANNO T,TAKEUCHI M,OHTSUKA S,et al. Corrosion behavior of ODS steels with several chromium contents in hot nitric acid solutions[J]. Journal of Nuclear Materials,2017,494:219-226.
【11】NINGSHEN S,SAKAIRI M,SUZUKI K,et al. Corrosion resistance of 9% Cr oxide dispersion-strengthened steel in different electrolytic media[J]. Corrosion,2013,69(9):863-874.
【12】蒋娅,庞飞飞,刘晓伟,等. T91铁素体不锈钢在亚硝酸钠溶液中的钝化研究[J]. 全面腐蚀控制,2011,25(9):45-48.
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【14】程炳坤,王琦,曹达华. 不锈钢材料的钝化技术及其研究进展[J]. 材料保护,2019,52(9):171-175.
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