在60℃、5MPaCO2条件下,采用高压釜试验研究了腐蚀介质的流动对X60管线钢腐蚀行为的影响。结果表明,腐蚀介质的流动导致腐蚀速率增大,但流速与腐蚀速率之间不存在线性关系;随着流速的增加,腐蚀形态呈现均匀腐蚀一局部腐蚀一均匀腐蚀的特点,腐蚀产物膜的表面和截面形貌也随之发生变化。
Using an autoclave with stirring equipment, the effect of flow velocity on the corrosion performance of X60 pipeline steel in rotating corrosion media under the condition of 60℃, 5 MPa CO2 was investigated. The results reveal that the flow of corrosion media can accelerate the corrosion rate, and the corrosion rate was nonlinear with the flow velocity. The flow of corrosion media made the corrosion mode changed from uniform corrosion to localized corrosion, and then to uniform corrosion agairn. The surface and cross-section morphology of corrosion product films also changed with the change of flow velocity.
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