Atomic-scale wear behaviors of iron oxide through the atom-by-atom attrition and plastic deformation of nano-asperities

影响因子：6.2

DOI码：10.1016/j.triboint.2023.108878

发表刊物：TRIBOLOGY INTERNATIONAL

摘要：Atomic-scale wear, behaving distinctly from macroscale wear, has been gaining significant scientific interest. We previously proposed a semi-empirical wear model for covalent bonding materials, which primarily describes an interfacial-bond-dominant atomic-scale wear process. To assess the model s broader applicability on other ma-terial types, herein we selected the iron oxide (Fe2O3) as a representative ionic bonding material and conducted the large-scale atomistic simulations. The simulations unveiled two main atomic-scale wear mechanisms of Fe2O3: plastic deformation/cracking of nano-asperities induced by the asperity collision, and atom-by-atom attrition caused by the interfacial O-Fe bond formation. Crucially, our simulations proved effective in capturing the atom-by-atom attrition wear, thus confirming its validity for ionic materials and expanding its potential usefulness to a broader range of materials.

论文类型：SCI

卷号：188

是否译文：否

发表时间：2023-08-14

收录刊物：SCI、EI

发布期刊链接：https://doi.org/10.1016/j.triboint.2023.108878