利用高温高压釜,通过失重法、SEM、XRD、EDS和纳米力学探针等方法,研究X52钢在普光气田服役条件下的CO2腐蚀行为.结果表明:在25～140℃时,X52钢在CO2水溶液中表现出高的腐蚀速率;随着温度的升高,腐蚀速率在60℃和120℃时出现极大值;随着压力的升高,腐蚀速率呈现出增大的趋势;腐蚀产物膜的主要成分为FeCO3;在90～140℃时,腐蚀类型以局部腐蚀为主,而在25～60℃时,主要以均匀腐蚀为主,并伴有轻微的局部腐蚀;随着温度的升高,腐蚀产物膜的弹性模量和硬度呈现出增大的趋势.
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