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Axial Suspension Plasma Spraying: An ultimate technique to tailor Ti6Al4V surface with HAp for orthopaedic applications
Centre for Biomaterials, Cellular & Molecular Theranostics (CBCMT), Vellore Institute of Technology, Vellore, 632014, India.
Centre for Biomaterials, Cellular & Molecular Theranostics (CBCMT), Vellore Institute of Technology, Vellore, 632014, India; Department of Physics, School of Advanced Sciences, Vellore Institute of Technology, Vellore, 632014, India.
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. (PTW)
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. (PTW)ORCID iD: 0000-0003-1897-0171
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2019 (English)In: Colloids and Surfaces B: Biointerfaces, ISSN 0927-7765, E-ISSN 1873-4367, Vol. 173, p. 806-815Article in journal (Refereed) Published
Abstract [en]

Dissolution of atmospheric plasma sprayed (APS) hydroxyapatite (HAp) coatings on Ti-6Al-4 V medical implants have always been a challenge to overcome in the field of biomedical industry. In the present work, an attempt has been made to develop a HAp coating using a novel thermal spray process called axial suspension plasma spraying (SPS), which leads to thin adherent coatings. Two HAp coatings fabricated by APS (P1 and P2) and four SPS HAp coatings (S1, S2, S3 and S4) produced with varying spraying parameters were characterized in terms of (1) microstructure, porosity, hardness, adhesion strength, contact angle and phase purity; (2) corrosion resistance in 10% Fetal bovine serum (FBS); (3) in-vitro cell adherence and cell viability using human umbilical cord blood-derived mesenchymal stem cells (hMSCs). Amongst different APS and SPS coatings, P1 and S3 exhibited superior properties. S3 coating developed using SPS exhibited 1.3 times higher adhesion strength when compared to APS coating (P1) and 9.5 times higher corrosion resistance than P1. In addition, both S3 and P1 exhibited comparatively higher biocompatibility as evidenced by the presence of more than 92% viable hMSCs. © 2018 Elsevier B.V.

Place, publisher, year, edition, pages
Elsevier, 2019. Vol. 173, p. 806-815
Keywords [en]
Adhesion; Aluminum alloys; Aluminum coatings; Aluminum corrosion; Atmospheric corrosion; Biocompatibility; Bond strength (materials); Cell adhesion; Cell culture; Contact angle; Corrosion resistance; Corrosion resistant coatings; Corrosive effects; Hydroxyapatite; Mammals; Phase shifters; Plasma jets; Sprayed coatings; Stem cells; Ternary alloys; Thermal spraying; Titanium alloys; Vanadium alloys, Atmospheric plasma spraying; Corrosion studies; hMSCs; Suspension plasma spraying; Ti-6 Al-4 V, Plasma spraying
National Category
Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Manufacturing and materials engineering; Production Technology
Identifiers
URN: urn:nbn:se:hv:diva-13115DOI: 10.1016/j.colsurfb.2018.10.071ISI: 000454377300095PubMedID: 30551296Scopus ID: 2-s2.0-85055725408OAI: oai:DiVA.org:hv-13115DiVA, id: diva2:1262573
Note

Available online 26 October 2018.

Available from: 2018-11-12 Created: 2018-11-12 Last updated: 2019-01-18Bibliographically approved

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Björklund, StefanGanvir, AshishMarkocsan, Nicolaie

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