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

被引：9

作者：

Najafi, H. ^{[2
]}

Nemati, A. ^{[2
]}

Sadeghian, Z. ^{[1
]}

机构：

[1] Res Inst Petr Ind, Gas Div, Tehran, Iran

[2] Sharif Univ Technol, Dept Mat Sci & Engn, Tehran, Iran

来源：

ADVANCES IN APPLIED CERAMICS | 2010年 / 109卷 / 06期

关键词：

Sol-gel chemistry; Nanostructures; Thin films; Hydroxyapatit; STAINLESS-STEEL; IN-VITRO; COATINGS; CRYSTALLINITY; BIOCOATINGS;

D O I：

10.1179/174367609X422144

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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 degrees 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 degrees C and was increased up to 450 degrees C. The obtained HA film showed a nanostructure character with a suitable crystalinity after heat treatment.

引用

页码：313 / 317

页数：5

共 26 条

[1] In vitro biological, chemical and electrochemical evaluation of titania reinforced hydroxyapatite sol-gel coatings on surgical grade 316L SS [J].