Effect on microstructure of TiO2 rate in Al2O3-TiO2 composite coating produced using plasma spray method

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dc.contributor.authorIslak, S.
dc.contributor.authorBuytoz, S.
dc.contributor.authorErsoz, E.
dc.contributor.authorOrhan, N.
dc.contributor.authorStokes, J.
dc.contributor.authorHashmi, M. Saleem
dc.contributor.authorTosun, N.
dc.date.accessioned2026-08-12T17:03:52Z
dc.date.issued2012
dc.departmentFırat Üniversitesi
dc.description.abstractIn this study, Al2O3-TiO2 composite coatings were thermally sprayed on the SAE 1040 steel using atmospheric plasma spray (APS) process of mixed different rates micron sized TiO2 and micron-sized Al2O3 powders. The effects of TiO2 addition on the microstructure, phase compositions and microhardness of the coatings were investigated by using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffractometry (XRD) and microhardness tester. The results show that the Al2O3-TiO2 composite coatings consists of both fully melted regions and partially melted regions, and the fully melted region has a lamellar-like structure. Phase transformations from mainly stable alpha-Al2O3 and anatase-TiO2 in the powders to predominant metastable gamma-Al2O3, rutile-TiO2 and Al2TiO5 phase in the Al2O3-TiO2 composite coatings were observed. It was determined that the pore content decreased with the increased in the TiO2 powder rate. The microhardness of the coating layers was 3-4.5 times higher than substrate material. The average microhardness values of the coatings were found to reach 650-860 HV.
dc.description.sponsorshipFirat University, Turkey [FUBAP-2066]
dc.description.sponsorshipThe authors would like to acknowledge Firat University, Turkey for the financial support (Project No. FUBAP-2066). The authors are grateful to Mr. Salih KILINC and Metal & Ceramics Coating Industry Company for providing plasma spraying and powders used in this study.
dc.identifier.endpage849
dc.identifier.issn1842-6573
dc.identifier.issn2065-3824
dc.identifier.issue9.Eki
dc.identifier.orcid0000-0002-6211-5044
dc.identifier.orcid0000-0002-6924-1887
dc.identifier.orcid0000-0001-9140-6476
dc.identifier.scopus2-s2.0-84872256947
dc.identifier.scopusqualityQ4
dc.identifier.startpage844
dc.identifier.urihttps://hdl.handle.net/11508/48490
dc.identifier.volume6
dc.identifier.wosWOS:000310498100017
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherNatl Inst Optoelectronics
dc.relation.ispartofOptoelectronics and Advanced Materials-Rapid Communications
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20260511
dc.subjectPlasma spray
dc.subjectCeramic coating
dc.subjectgamma-Al2O3
dc.subjectRutile-TiO2
dc.titleEffect on microstructure of TiO2 rate in Al2O3-TiO2 composite coating produced using plasma spray method
dc.typeArticle

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