Evaluating mechanical adhesion of sol-gel titanium dioxide coatings containing calcium phosphate for metal implant application

被引：88

作者：

Piveteau, LD

Gasser, B

Schlapbach, L

机构：

[1] Univ Fribourg, Inst Phys, CH-1700 Fribourg, Switzerland

[2] Dr Robert Mathys Fdn, Bettlach, Switzerland

来源：

BIOMATERIALS | 2000年 / 21卷 / 21期

关键词：

hydroxyapatite; beta-tricalcium phosphate; titanium dioxide; coating; sol-gel; mechanical testing;

D O I：

10.1016/S0142-9612(00)00160-5

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

The adhesion of thin (< 10 mu m) sol-gel calcium phosphate-titanium dioxide films bonded to a titanium substrate was studied using two different tests: a rotating-bending test and a tensile bond test. The former evaluates the impact of both the coating procedure and the surface pre-treatment on the resistance to fatigue of the substrate as well as the adhesion of the coating; the latter measures the tensile adhesion strength of the coating. Both tests gave similar results. A reduction of the thickness of the coating or an increase of the roughness of the substrate improves the quality of the interface. A comparison of the adhesion of the calcium phosphate-titanium dioxide film with that of a pure calcium phosphate coating obtained by a similar route suggests the involvement of a chemical component in the binding. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：2193 / 2201

页数：9

共 23 条

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