Mechanical properties of calcium phosphate invert glass-ceramic coated Ti-29Nb-13Ta-4.6Zr for biomedical applications

M. Niinomi, T. Akahori, T. Yamaguchi, T. Kasuga, H. Fukui, A. Suzuki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Aging characteristics and mechanical properties of biomedical ß type titanium alloy, Ti-29Nb-13Ta-4.6Zr, coated with calcium phosphate invert glass-ceramic were investigated. Vickers hardness values of cross sections of Ti-29Nb-13Ta-4.6Zr, TNTZ, conducted with dip-coating treatment, DCT, composed of a firing treatment, FT, at 1073 K for 0.9 ks or 3.6 ks followed by furnace cooling and conducted with only FT are almost the same, and are around 240 Hv. This value is much greater than that of TNTZ conducted with solution treatment, ST, at 1063 K for 3.6 ks. The increasing hardness is due to the precipitation of ω phase during FT. Tensile bonding strength of 5 urn thick coating layer of calcium phosphate invert glass-ceramic on TNTZ is not degraded by aging, but 20 μm thick coating layer is degraded. The modulus of elasticity of TNTZ conducted with DCT or aging after DCT is relatively greater than that of TNTZ conducted with solution treatment, that is, around 80 GPa and 110 GPa, respectively.

Original languageEnglish
Title of host publicationMedical Device Materials II - Proceedings of the Materials and Processes for Medical Devices Conference 2004
EditorsM. Helmus, D. Medlin
Pages97-102
Number of pages6
Publication statusPublished - 2005 Dec 1
EventMedical Device Materials II - Materials and Processes for Medical Devices Conference 2004 - St. Paul, MN, United States
Duration: 2004 Aug 252004 Aug 27

Publication series

NameMedical Device Materials II - Proceedings of the Materials and Processes for Medical Devices Conference 2004

Other

OtherMedical Device Materials II - Materials and Processes for Medical Devices Conference 2004
Country/TerritoryUnited States
CitySt. Paul, MN
Period04/8/2504/8/27

ASJC Scopus subject areas

  • Engineering(all)

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