Fabrication of apatite/titanium functionally graded coating using supersonic free-jet PVD

Atsushi Yumoto, Takahisa Yamamoto, Ichiro Shiota, Naotake Niwa

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

Abstract

Hydroxyapatite (HAp) is very attractive in medical field. The objective of this study is to produce HAp/Ti composite coating with Supersonic Free-Jet PVD (SFJ-PVD). The SFJ-PVD is a technique to deposit nanoparticles with supersonic gas flow and to form a thick coating film. In a gas evaporation chamber, a source material is evaporated to form nanoparticles in an inert gas atmosphere. The nanoparticles are then carried to a substrate in a deposition chamber with an inert gas flow through a transfer pipe. The gas flow is generated by the pressure difference between the chambers and accelerated to the supersonic flow of 4.2 Mach through a specially designed supersonic nozzle. With SFJ-PVD, we obtain a uniform high-density HAp/Ti composite coating. XRD analysis reveals that the composite coating is composed of Ti and HAp. An in-vitro study was carried out to investigate the bioactivity of the HAp/Ti composite coating under simulated body fluid.

Original languageEnglish
Title of host publicationMultiscale, Multifunctional and Functionally Graded Materials
Pages187-192
Number of pages6
DOIs
Publication statusPublished - 2010 Feb 9
Event10th International Symposium on Multiscale, Multifunctional and Functionally Graded Materials, MM and FGMs - Sendai, Japan
Duration: 2008 Sep 222008 Sep 25

Publication series

NameMaterials Science Forum
Volume631-632
ISSN (Print)0255-5476

Conference

Conference10th International Symposium on Multiscale, Multifunctional and Functionally Graded Materials, MM and FGMs
CountryJapan
CitySendai
Period08/9/2208/9/25

Keywords

  • Biomaterial
  • Bone-like apatite
  • Nanoparticle
  • Simulated body fluid
  • Supersonic gas flow

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Yumoto, A., Yamamoto, T., Shiota, I., & Niwa, N. (2010). Fabrication of apatite/titanium functionally graded coating using supersonic free-jet PVD. In Multiscale, Multifunctional and Functionally Graded Materials (pp. 187-192). (Materials Science Forum; Vol. 631-632). https://doi.org/10.4028/www.scientific.net/MSF.631-632.187