... in passivation transition and passive regions, increased frictional load shifts the transient current from negative to positive. This corresponds to a mechanistic change from cathodic hydrogen evolution reaction ( HER ) dominance at low loads to anodic dissolution controlled by depassivation at high loads...

...Zili Li; Chao Yang; Gan Cui; Shouxin Zhang; Chengbin Zhang Purpose When hydrogen evolution reaction occurs on a metal surface, on the one hand, the generated hydrogen atom may penetrate into the metal that causes the hydrogen embrittlement failure of materials; on the other hand, the hydrogen...