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Atomic-scale wear behaviors of iron oxide through the atom-by-atom attrition and plastic deformation of nano-asperities.
- Source :
-
Tribology International . Oct2023, Vol. 188, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
-
Abstract
- 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 material types, herein we selected the iron oxide (Fe 2 O 3) as a representative ionic bonding material and conducted the large-scale atomistic simulations. The simulations unveiled two main atomic-scale wear mechanisms of Fe 2 O 3 : 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. [ABSTRACT FROM AUTHOR]
- Subjects :
- *FERRIC oxide
*MATERIAL plasticity
*IRON oxides
*INTERFACIAL bonding
*IONIC bonds
Subjects
Details
- Language :
- English
- ISSN :
- 0301679X
- Volume :
- 188
- Database :
- Academic Search Index
- Journal :
- Tribology International
- Publication Type :
- Academic Journal
- Accession number :
- 171586248
- Full Text :
- https://doi.org/10.1016/j.triboint.2023.108878