摩擦腐蚀
材料科学
冶金
分层(地质)
合金
人工海水
磨料
腐蚀
电偶腐蚀
往复运动
复合材料
海水
电化学
海洋学
地质学
工程类
气体压缩机
物理化学
古生物学
生物
化学
机械工程
构造学
俯冲
电极
作者
Xian-Zong Wang,Yanfei Wang,Zhuobin Huang,Qing Zhou,Haifeng Wang
出处
期刊:Metals
[MDPI AG]
日期:2022-02-25
卷期号:12 (3): 401-401
被引量:7
摘要
Understanding the fundamental behaviors of tribocorrosion for metals is critical for their possible application in seawater. For the recently emerging medium entropy alloys (MEAs), while mechanical wear and corrosion phenomena have been established, such experimental exploration is still lacking regarding the tribocorrosion behavior. In this work, the tribocorrosion behavior of CoCrNi MEA was investigated on a reciprocating sliding friction testing machine. Although a significant increase of current density formed due to sliding, CoCrNi exhibits superior passivity when compared with 316L and Inconel 600. In addition, the total tribocorrosion volume loss increases with positive shifting of the applied potential for CoCrNi. Specifically, the total material loss at an applied potential more positive than the pitting potential is one order in magnitude larger than that under pure mechanical wear, confirming the synergy between wear and corrosion. The generated pits on the worn surface became the preferred locations of wear and tear, leading to accelerated materials’ loss rate. Through detecting the morphologies of the contact surfaces, the features of abrasive wear, adhesive wear, delamination, and plastic deformation were revealed for CoCrNi during tribocorrosion at different potentials.
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