Corrosion Resistance Evaluation of HVOF Produced Hydroxyapatite and TiO2-hydroxyapatite Coatings in Hanks' Solution
| Autor: | J.M. Guilemany, P. H. Suegama, Javier Fernández, Hortensia Correas Melero, Rafael Toshio Sakai, Assis Vicente Benedetti, Claudia Abellan Vignatti |
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| Přispěvatelé: | Universitat de Barcelona, Universidade Federal da Grande Dourados - UFGD, Universidade Estadual Paulista (Unesp) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Passivation BSA TiAlV alloy Oxide TiO2-hydroxyapatite coating 02 engineering and technology Electrolyte engineering.material 010402 general chemistry 01 natural sciences Corrosion chemistry.chemical_compound Coating General Materials Science HVOF hydroxyapatite coating Thermal spraying Polarization (electrochemistry) Materials of engineering and construction. Mechanics of materials Mechanical Engineering 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Chemical engineering chemistry Mechanics of Materials engineering TA401-492 0210 nano-technology Layer (electronics) |
| Zdroj: | Materials Research, Issue: ahead, Published: 22 JAN 2018 Materials Research, Volume: 21, Issue: 2, Article number: e20170210, Published: 22 JAN 2018 Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP Materials Research, Vol 21, Iss 2 (2018) Materials Research v.21 n.2 2018 Materials research (São Carlos. Online) Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL |
| ISSN: | 1516-1439 |
| Popis: | Made available in DSpace on 2018-12-11T17:20:26Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-01-01. Added 1 bitstream(s) on 2019-10-09T18:31:45Z : No. of bitstreams: 1 S1516-14392018000205105.pdf: 1721754 bytes, checksum: a5ef5f7c29effdf604c377f31ab9b5bc (MD5) Fundação de Apoio ao Desenvolvimento do Ensino, Ciência e Tecnologia do Estado de Mato Grosso do Sul Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) The electrochemical behavior of HVOF produced hydroxyapatite (HA) and 80HA-20TiO2 coatings were investigated using electrochemical techniques in natural aerated Hanks' solution in the presence and absence of bovine serum albumin (BSA) for 30 days. All samples presented open circuit potential oscillations, which were associated to the porous nature of the coating that allows the electrolyte reaches the substrate causing activation - passivation at the bottom of the pores. The polarization studies indicated that the 80HA-20TiO2 coating was the only one that showed a narrow potential passive region from around -0.4 V to 0 V in the presence and absence of BSA, indicating the beneficial influence of the addition of TiO2 to the HA coating stability. Our results indicated that BSA in Hanks' solution diminishes the stability of the metallic oxide layer present on the Ti-based alloy accelerating the degrading of hydroxyapatites coatings / substrate interface due to its chelating ability. Centre de Projecció Tèrmica - CPT Universitat de Barcelona, Martí i Franquès 1 Faculdade de Ciências Exatas e Tecnologia Universidade Federal da Grande Dourados - UFGD, Rodovia Dourados - Ithaum km 12 Departamento de Físico-Química Instituto de Química Universidade Estadual Paulista - UNESP, Rua Prof. Francisco Degni, 55, 14800-060, P.O. Box 355 Departamento de Físico-Química Instituto de Química Universidade Estadual Paulista - UNESP, Rua Prof. Francisco Degni, 55, 14800-060, P.O. Box 355 Fundação de Apoio ao Desenvolvimento do Ensino, Ciência e Tecnologia do Estado de Mato Grosso do Sul: 23/200.693/2012 CNPq: 305890/2010-7 |
| Databáze: | OpenAIRE |
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