Hydroxyapatite coating on titanium by a low energy plasma spraying mini-gun

被引：56

作者：

Demnati, I. ^{[1
]}

Parco, M. ^{[2
]}

Grossin, D. ^{[1
]}

Fagoaga, I. ^{[2
]}

Drouet, C. ^{[1
]}

Barykin, G. ^{[2
]}

Combes, C. ^{[1
]}

Braceras, I. ^{[2
]}

Goncalves, S. ^{[3
]}

Rey, C. ^{[1
]}

机构：

[1] Univ Toulouse, CIRIMAT CNRS INPT UPS, ENSIACET, F-31030 Toulouse, France

[2] INASMET Tecnalia, E-20009 Donostia San Sebastian, Spain

[3] TEKNIMED SA, ZI Montredon, F-31240 Lunion, France

来源：

SURFACE & COATINGS TECHNOLOGY | 2012年 / 206卷 / 8-9期

关键词：

Hydroxyapatite; Plasma-spray; Oxyapatite; Raman spectroscopy; AMORPHOUS PHASE; APATITES;

D O I：

10.1016/j.surfcoat.2011.10.025

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Plasma-sprayed hydroxyapatite (HA) coatings are used on metallic implants to improve osseointegration and bone growth. The purpose of this work was to determine the microstructure and composition of HA coatings obtained with a newly developed low energy plasma spray mini-gun employing an HA feedstock powder with smaller granulometry than that commonly used. The microstructure and the phase composition of the coatings obtained by varying the number of mini-gun runs were examined using scanning electron microscopy, X-ray diffraction and Fourier transform infrared and micro-Raman spectroscopy. In all cases, the results indicate the presence of an amorphous phase and oxyapatite in the coatings due to hydroxyl group removal. No other foreign crystalline phases were detected. The absence of foreign phases was attributed to the fast cooling rate of the small particles used in the experiments and the low amount of energy employed with the mini-gun. Decomposition in the upsilon 1PO4 region of the Raman spectra allowed a semi-quantitative evaluation of the phase contents as a function of the number of runs. Micro-Raman spectroscopy appears to be a powerful technique providing comprehensive and localised information concerning calcium phosphate phases in coatings. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.

引用

页码：2346 / 2353

页数：8

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