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dc.contributor.authorKabir, M.S.-
dc.contributor.authorZhou, Z.-
dc.contributor.authorXie, Z.-
dc.contributor.authorMunroe, P.-
dc.identifier.citationCeramics International, 2020; 46(1):89-97-
dc.description.abstractCeO₂-ₓ coatings were deposited under variable oxygen flow ratios (%f₀₂) onto Si substrates by reactive magnetron sputtering. Nanoindentation testing revealed an increase in the hardness, elastic modulus, H/E and H³/E² ratio with increasing oxygen flow ratio, which in turn increased the adhesion and tribological performance of the coatings. Scratch testing yielded the highest critical load (Lc₂ = 28.8 N) and CPRs = 103 for the coating deposited with the highest oxygen flow ratio (57 %f₀₂). Cracking events during scratch testing were initiated by tensile forces behind the scratch stylus, which led to the formation of semi-circular ring cracks. As the normal load increased, transverse cracks emerged extending outwards from the scratch track towards the edge causing the exposure of substrate. Beyond Lc₂, severe spallation of the CeO₂-ₓ coatings led to coating failure. Furthermore, the specific wear rates of the CeO2-x coatings were determined to be within the ~10⁻¹⁵ m³/Nm range influenced by three-body abrasive wear. In-depth analyses from scratch and wear data indicates that these coatings possess good adhesion and durability.-
dc.description.statementofresponsibilityMohammad Sharear Kabir, Zhifeng Zhou, Zonghan Xie, Paul Munroe-
dc.rights© 2019 Elsevier Ltd and Techna Group S.r.l. All rights reserved.-
dc.subjectReactive magnetron sputtering; cerium oxide coating; scratch toughness; tribological performance; durability-
dc.titleScratch and wear resistance of hydrophobic CeO₂-ₓ coatings synthesized by reactive magnetron sputtering-
dc.title.alternativeScratch and wear resistance of hydrophobic CeO(2)-(x) coatings synthesized by reactive magnetron sputtering-
dc.typeJournal article-
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Mechanical Engineering publications

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