【摘 要】
：
基于理论分析和采用挂片实验、SEM以及电化学测量技术,研究了S135钻杆钢在不同温度下3.5%KCl溶液中的腐蚀行为。结果表明:钻杆钢试样开路电位随着温度升高负移;不同温度下的
【机 构】
：
西安石油大学材料科学与工程学院,中国石油集团石油管工程技术研究院,
论文部分内容阅读
基于理论分析和采用挂片实验、SEM以及电化学测量技术,研究了S135钻杆钢在不同温度下3.5%KCl溶液中的腐蚀行为。结果表明:钻杆钢试样开路电位随着温度升高负移;不同温度下的腐蚀控制因素是造成腐蚀速率变化的主要原因;电化学腐蚀主要受阳极反应控制;系统“弥散效应”随温度升高而增强,平均腐蚀速率呈现先增加后降低的趋势。
The corrosion behavior of S135 drill pipe steel in 3.5% KCl solution at different temperatures was studied based on theoretical analysis and using coupons, SEM and electrochemical measurement techniques. The results show that the open circuit potential of the drill pipe steel sample is negatively shifted with the increase of the temperature. The corrosion control factors at different temperatures are the main causes of the corrosion rate change. The electrochemical corrosion is mainly controlled by the anode reaction. The system “dispersion effect” With the increase of temperature, the average corrosion rate increases first and then decreases.
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