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腐蚀科学与防护技术
第 14 卷第 1 期 Vol 14 No 1
2002 年 1 月 CORROSION SCIENCE AND PROTECTION TECHNOLOGY Jan 2002
渗 Al 碳钢在高温精制环烷酸介质中的腐蚀行为
吴欣强1 敬和民1 郑玉贵1 姚治铭1 柯伟1 许适群2
( 1 中国科学院金属研究所金属腐蚀与防护国家重点实验室沈阳 110016;
2 中国石化股份公司科技开发部北京 100029)
摘要研究了固体渗 Al 碳钢在高温精制环烷酸中的腐蚀行为,并评价了渗 Al 层对碳钢抗环烷酸腐蚀性能的影响.
结果表明2 :腐蚀初期2 ,渗 Al 碳钢显示出较好的抗蚀性能2 2 ;但延长腐蚀时间,其抗蚀性能显著恶化,渗 Al 层以台阶方
式逐层剥落. 渗 Al 碳钢表面氧化膜及 Fe - Al 合金层在精制环烷酸介质中的不稳定性是导致涂层抗蚀性能恶化的
主要原因.
关键词固体渗 Al 碳钢环烷酸腐蚀
中图分类号 TG174 4 文献标识码 A 文章编号 1002 6495 (2002) 01 0001 06
CORROSION BEHAVIOR OF AL UMINIZED CARBON STEEL
IN HIGH- TEMPERATURE PURIFICATORY NAPHTHENIC ACID MEDIUM
WU Xinqiang1 ,J IN G Hemin1 ,ZHEN G Yugui1 , YAO Zhiming1 , KE Wei1 ,XU Shiqun2
(1 S tate Key L aboratory f or Corrosion and Protection ,
Institute of Metal Research , The Chinese Academy of Sciences , S henyang 110016;
2 Department of Science and Technology Development , S IN O PEC , Beijing 100029)
ABSTRACT The corrosion behavior of pack - aluminized carbon steel in high - temperature purifica
tory naphthenic acid medium was investigated. The influence of the aluminized layer on the naphthenic
acid corrosion resistance of carbon steel was evaluated. The results revealed that the aluminized carbon
steel exhibited an excellent corrosion resistance in the initial stage. However ,with prolonging corrosion
time ,the corrosion res