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Crystallisation kinetics of hydroxyapatite thin films prepared by sol-gel process

Najafi, H ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1179/174367609X422144
  3. Abstract:
  4. In this study, the crystallisation of nano hydroxyapatite (HA) films on stainless steel 316L was studied. The film was prepared by sol-gel technique. The process was started with preparation of an HA sol. After aging of the sol at room temperature, a stainless steel 316L substrate was dip coated and then was heat treated from 350 to 450°C at different periods of time in air. The crystallisation behaviour and the transformation-temperature-time diagram of HA films were achieved and analysed using the avrami equation. The results showed that the crystallisation of HA began at 250°C and was increased up to 450°C. The obtained HA film showed a nanostructure character with a suitable crystalinity after heat treatment
  5. Keywords:
  6. Hydroxyapatit ; After-heat treatment ; Avrami equations ; Crystallisation kinetics ; Hydroxyapatite thin films ; Nano-hydroxyapatite ; Room temperature ; Sol-gel technique ; Stainless steel 316L ; Time diagrams ; Apatite ; Crystallization ; Gels ; Hydroxyapatite ; Nanostructures ; Sol-gel process ; Sol-gels ; Sols ; Stainless steel ; Thin films ; Vapor deposition ; Film preparation
  7. Source: Advances in Applied Ceramics ; Volume 109, Issue 6 , Jul , 2010 , Pages 313-317 ; 17436753 (ISSN)
  8. URL: http://www.tandfonline.com/doi/abs/10.1179/174367609X422144