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油套管N80钢的乙酸腐蚀行为

, PP. 94-97

Keywords: N80,乙酸,腐蚀行为

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Abstract:

模拟油气田环境,采用高温高压釜对油套管N80钢进行失重腐蚀试验.结果表明N80钢的腐蚀速率随着乙酸浓度的增加呈升高趋势,但在乙酸浓度为3000μl/L时反而比在1000μl/L时低,并且其在含乙酸的腐蚀介质中的腐蚀速率远高于在未含乙酸的腐蚀介质中的腐蚀速率.利用扫描电子显微镜(SEM)、能散X射线谱仪(EDS)和X射线衍射技术(XRD)研究了在不同乙酸浓度条件下油管钢N80腐蚀的特征并讨论了其腐蚀机理.

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