Biocompatible nanostructured high-velocity oxyfuel sprayed titania coating : Deposition, characterization, and mechanical properties

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DOIResolve DOI: http://doi.org/10.1361/105996306X146974
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TypeArticle
Journal titleJournal of Thermal Spray Technology
Volume15
Issue4
Pages623627; # of pages: 5
Subjectbiomedical coating; bond strength; hardness; hydroxyapatite; nanostructured TiO₂
AbstractNanostructured titania (TiO2) coatings were produced by high-velocity oxyfuel (HVOF) spraying. They were engineered as a possible candidate to replace hydroxyapatite (HA) coatings produced by thermal spray on implants. The HVOF sprayed nanostructured titania coatings exhibited mechanical properties, such as hardness and bond strength, much superior to those of HA thermal spray coatings. In addition to these characteristics, the surface of the nanostructured coatings exhibited regions with nanotextured features originating from the semimolten nanostructured feedstock particles. It is hypothesized that these regions may enhance osteoblast adhesion on the coating by creating a better interaction with adhesion proteins, such as fibronectin, which exhibit dimensions in the order of nanometers. Preliminary osteoblast cell culture demonstrated that this type of HVOF sprayed nanostructured titania coating supported osteoblast cell growth and did not negatively affect cell viability.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Industrial Materials Institute
Peer reviewedYes
NRC number48867
NPARC number15884098
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Record identifierc6aa9ace-33ff-499f-b8dc-ea737e45092e
Record created2010-07-30
Record modified2016-05-09
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