Mechanical properties of calcium phosphate coatings deposited by laser ablation

被引：106

作者：

Clèries, L ^{[1
]}

Martínez, E ^{[1
]}

Fernández-Pradas, JM ^{[1
]}

Sardin, C ^{[1
]}

Esteve, J ^{[1
]}

Morenza, JL ^{[1
]}

机构：

[1] Univ Barcelona, Dept Fis Aplicada & Opt, E-08028 Barcelona, Spain

来源：

BIOMATERIALS | 2000年 / 21卷 / 09期

关键词：

hydroxyapatite; calcium phosphate coatings; laser ablation; adhesion;

D O I：

10.1016/S0142-9612(99)00240-9

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

Amorphous calcium phosphate and crystalline hydroxyapatite coatings with different morphologies were deposited onto Ti-6Al-4V substrates by means of the laser ablation technique. The strength of adhesion of the coatings to the substrate and their mode of fracture were evaluated through the scratch test technique and scanning electron microscopy. The effect of wet immersion on the adhesion was also assessed. The mechanisms of failure and the critical load of delamination differ significantly depending on the phase and structure of the coatings. The HA coatings with granular morphology have higher resistance to delamination as compared to HA coatings with columnar morphology. This fact has been related to the absence of stresses for the granular morphology. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：967 / 971

页数：5

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