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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。
The corrosion and erosion wear behavior of Hastelloy C276 alloy on the ground with Al2O3 ceramic in simulated seawater was studied by using the pin-plate corrosion wear tester system with electrochemical test system. The results show that the frictional effect not only greatly reduces the open circuit potential of Hastelloy C276 alloy, but also increases the corrosion current density of the alloy by three orders of magnitude. Hastelloy C276 alloy abrasion and wear there is a clear synergy between the role of wear and promote corrosion, corrosion in turn accelerated the wear and tear in the experimental conditions of pure mechanical wear and tear in the total wear and tear in the metal account for more than 70% , Indicating that the role of mechanical wear and tear is the leading factor in the failure of alloy corrosion wear. Although the friction makes Hastelloy C276 alloy corrosion rate is greatly improved, but the promotion of wear on the corrosion of the total amount of wear in the metal is not large, while the amount of corrosion on the wear of the total wear and tear in the higher proportion , Ranging from 14.6% to 20.5%.