Hastelloy C276合金在模拟海水环境中的腐蚀磨损协同作用（英文）

发布时间：2018-10-22 13:36

【摘要】：利用带有电化学测试体系的销-盘腐蚀磨损试验机系统研究Hastelloy C276合金在模拟海水中与Al2O3陶瓷对磨时的腐蚀和腐蚀磨损行为。结果表明,摩擦作用不仅使Hastelloy C276合金的开路电位大幅下降,而且将合金的腐蚀电流密度提高了3个数量级。Hastelloy C276合金的磨蚀与磨损之间存在明显的协同作用,磨损促进了腐蚀,反过来腐蚀也加速了磨损,在本实验摩擦条件下纯机械磨损在金属总磨损量中的占比均超过70%,这说明机械磨损作用是合金腐蚀磨损失效的主导因素。虽然摩擦使得Hastelloy C276合金的腐蚀速度得到极大提高,但是磨损对腐蚀的促进量在金属总磨损量中的占比并不大,而腐蚀对磨损的促进量在总磨损量中的占比较高,在14.6%~20.5%范围内变化。
[Abstract]:The corrosion and corrosion wear behavior of Hastelloy C276 alloy during grinding with Al2O3 ceramics in simulated seawater was studied by using a pin-disk corrosion wear tester with electrochemical testing system. The results show that friction not only decreases the open circuit potential of Hastelloy C276 alloy significantly, but also increases the corrosion current density by three orders of magnitude. There is an obvious synergistic effect between abrasion and wear of Hastelloy C276 alloy. On the contrary, corrosion accelerates wear, and the ratio of pure mechanical wear to total metal wear is more than 70% under the experimental friction condition, which indicates that mechanical wear is the dominant factor of corrosion wear failure of alloy. Although the corrosion rate of Hastelloy C276 alloy is greatly improved by friction, the proportion of corrosion promotion to wear is not much in the total wear rate of metal, but the proportion of corrosion to wear is relatively high in the total wear rate. Within the range of 14.6% and 20.5%.
【作者单位】：河南科技大学材料科学与工程学院;中国科学院兰州化学物理研究所
【基金】：Project(LSL-1310)supported by the Open Project of State Key Laboratory of Solid Lubrication,China Project(51171059)supported by the National Natural Science Foundation of China
【分类号】：TG115.58;TG174.3

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