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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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N80油套管钢CO2腐蚀产物膜特征
, PP. 411-416
Keywords: CO2腐蚀.腐蚀产物膜,含Cr,N80钢
Abstract:
在模拟的油田高温高压现场环境下研究了普通N80级油套管钢和含4%-5%Cr的N80油套管钢CO2腐蚀产物膜结构和离子选择性特征.结果表明.普通N80油套管钢形成的FeCO3腐蚀产物膜具有阴离子选择透过性.这种特征对基体保护性较差,且容易诱发点蚀含4%-5%Cr的N80油套管钢形成的Cr(OH)3非晶态腐蚀产物膜具有阳离子选择透过性,它不仅可以显著降低腐蚀速率.而且可以抑制点蚀的发生.
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