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利用高温高压反应釜模拟高含硫气田H2S/CO2共存环境,分别在流动湿气和溶液介质中进行API-X60腐蚀实验,探讨了高H2S分压对腐蚀行为的影响.X60管线钢的腐蚀速率在湿气介质中随H2S分压升高而增加,在溶液介质中则先升高后降低,腐蚀形态均由全面腐蚀趋于局部腐蚀,腐蚀产物以硫铁化合物(FexSy)为主.H2S分压为2.0 MPa条件下,溶液介质中形成的腐蚀产物中富S相比例明显增加,HS-和Cl-穿过膜层缺陷引发点蚀,多孔且不连续的富S膜层进一步促进点蚀发展.

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