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Friction and wear properties of MoAlB against Al2O3 and 100Cr6 steel counterparts
Journal article

Friction and wear properties of MoAlB against Al2O3 and 100Cr6 steel counterparts

Abdessabour Benamor, Sankalp Kota, Nabil Chiker, Adel Haddad, Youcef Hadji, Varun Natu, Said Abdi, Mostepha Yahi, Mohamed E.A. Benamar, Tahar Sahraoui, …
Journal of the European Ceramic Society, v 39(4), pp 868-877
Apr 2019
DOI: https://doi.org/10.1016/j.jeurceramsoc.2018.10.026

Abstract

Friction Microstructure MoAlB Ripples Wear
The present work investigates, for the first time, the dry sliding friction and wear behaviour of fully dense, predominantly single-phase MoAlB ceramics against alumina (Al2O3) and 100Cr6 steel counterparts. Against Al2O3, the friction coefficient (μ) increased with increasing load and the wear was highly dependent on the load applied. A transition from mild wear under 1 N and 4 N to severe wear at 10 N occurred. Scanning electron microscopy revealed that abrasion is the dominant wear mechanism. Against steel, μ decreased with increasing load and the wear rates were low, under all applied loads. The morphologies of the worn surfaces against steel were characterized by the appearance of a rippled layers. Atomic force microscopy and Raman spectroscopy were used to propose a possible formation mechanism of such patterns. X-ray photoelectron spectroscopy revealed the rippled surfaces to be composed of Fe2O3 and a mixture of MoOx.

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Domestic collaboration
International collaboration
Web of Science research areas
Materials Science, Ceramics
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