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A microabrasion wear study of nitrided α-Ti and β-TiNb PVD metallic thin films, pre-deposited onto titanium alloy substrates

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dc.contributor.authorYUMUŞAK, GÖRKEM
dc.contributor.authorsYUMUŞAK G., Leyland A., Matthews A.
dc.date.accessioned2023-06-20T06:12:12Z
dc.date.available2023-06-20T06:12:12Z
dc.date.issued2022-07-01
dc.description.abstract© 2022 Elsevier B.V.In this paper, we study the structure, mechanical properties and abrasion resistance of two triode-plasma nitrided (TPN) titanium alloys, pre-coated with metallic α-Ti or β-TiNb layers deposited by physical vapour deposition (PVD). The chosen alloys were Ti-6Al-4V and Ti-4Al-10V-22Mo, which are predominantly alpha- and beta-phased, respectively – each presenting different challenges, in terms of their nitriding response. Although duplex nitriding + PVD coating is now quite widely employed on steels (and increasingly on titanium alloys) to improve load-bearing capacity and wear resistance, the use of PVD coatings prior to diffusion treatment to control surface roughness – and, in the case of Ti-alloys particularly, to optimise their ‘challenging’ diffusion kinetics has received little or no attention so far. The TPN process enables diffusion treatments to be carried out at 700 °C – which is lower than the beta-transus temperature of Ti (and of most Ti alloys). Optical microscopy, scanning electron microscopy, atomic force microscopy, X-ray diffraction, nanoindentation, and surface profilometry were used to characterize the nitrided and coated/nitrided samples. It was found that the nitrogen concentration and surface hardness for all samples was significantly increased, and that the surface roughness values significantly increased for uncoated Ti alloy substrates after TPN treatment – due to intense, grain orientation-dependent plasma etching effects. However, our novel approach of PVD pre-deposition of a nanostructured metallic coating prior to nitriding reduces surface roughening effects quite dramatically. The micro-abrasion resistance of Ti- and TiNb-coated Ti-6Al-4V substrates was significantly enhanced after nitriding treatment; on the other hand, similar improvements were not found for the metastable-beta Ti-4Al-10V-22Mo substrates – due to the different nitriding behaviour of the pre-deposited PVD surface layers. The \"sputter removal\" rates for the metallic coatings were high, but all coatings survived in part until the end of the nitriding process.
dc.identifier.citationYUMUŞAK G., Leyland A., Matthews A., "A microabrasion wear study of nitrided α-Ti and β-TiNb PVD metallic thin films, pre-deposited onto titanium alloy substrates", Surface and Coatings Technology, cilt.442, 2022
dc.identifier.doi10.1016/j.surfcoat.2022.128423
dc.identifier.issn0257-8972
dc.identifier.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85128584565&origin=inward
dc.identifier.urihttps://hdl.handle.net/11424/290448
dc.identifier.volume442
dc.language.isoeng
dc.relation.ispartofSurface and Coatings Technology
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectFizik
dc.subjectYoğun Madde 1:Yapısal, Mekanik ve Termal Özellikler
dc.subjectKimya
dc.subjectFizikokimya
dc.subjectTemel Bilimler
dc.subjectMühendislik ve Teknoloji
dc.subjectPhysics
dc.subjectCondensed Matter 1: Structural, Mechanical and Thermal Properties
dc.subjectChemistry
dc.subjectPhysical Chemistry
dc.subjectNatural Sciences
dc.subjectEngineering and Technology
dc.subjectMühendislik, Bilişim ve Teknoloji (ENG)
dc.subjectTemel Bilimler (SCI)
dc.subjectMalzeme Bilimi
dc.subjectMALZEME BİLİMİ, ÇOKDİSİPLİNLİ
dc.subjectKİMYA, FİZİKSEL
dc.subjectFİZİK, YOĞUN MADDE
dc.subjectEngineering, Computing & Technology (ENG)
dc.subjectNatural Sciences (SCI)
dc.subjectMATERIALS SCIENCE
dc.subjectCHEMISTRY
dc.subjectPHYSICS
dc.subjectMATERIALS SCIENCE, MULTIDISCIPLINARY
dc.subjectCHEMISTRY, PHYSICAL
dc.subjectPHYSICS, CONDENSED MATTER
dc.subjectGenel Kimya
dc.subjectFizik Bilimleri
dc.subjectYoğun Madde Fiziği
dc.subjectYüzeyler ve Arayüzler
dc.subjectYüzeyler, Kaplamalar ve Filmler
dc.subjectMalzeme Kimyası
dc.subjectGeneral Chemistry
dc.subjectPhysical Sciences
dc.subjectCondensed Matter Physics
dc.subjectSurfaces and Interfaces
dc.subjectSurfaces, Coatings and Films
dc.subjectMaterials Chemistry
dc.subjectTitanium-niobium coatings
dc.subjectPVD
dc.subjectTriode plasma nitriding
dc.subjectMicro-abrasion test
dc.subjectTRIODE PLASMA-DIFFUSION
dc.subjectSURFACE
dc.subjectTI-6AL-4V
dc.subjectNITROGEN
dc.subjectBEHAVIOR
dc.subjectKINETICS
dc.subjectTitanium-niobium coatings
dc.subjectPVD
dc.subjectTriode plasma nitriding
dc.subjectMicro-abrasion test
dc.titleA microabrasion wear study of nitrided α-Ti and β-TiNb PVD metallic thin films, pre-deposited onto titanium alloy substrates
dc.typearticle
dspace.entity.typePublication
local.avesis.id735b50ab-0d4a-44ff-94e0-9c1e6c51cd78
local.indexed.atWOS
local.indexed.atSCOPUS
relation.isAuthorOfPublicationd3895ae9-4dad-4ca9-ad11-40b664bd060e
relation.isAuthorOfPublication.latestForDiscoveryd3895ae9-4dad-4ca9-ad11-40b664bd060e

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