THE EFFECT OF A PLASMA-SPRAYED HYDROXYAPATITE COATING ON THE FATIGUE PROPERTIES OF TI-6AL-4V

被引：26

作者：

EVANS, SL

GREGSON, PJ

机构：

[1] Engineering Materials, University of Southampton, Southampton, Hants

来源：

MATERIALS LETTERS | 1993年 / 16卷 / 05期

关键词：

D O I：

10.1016/0167-577X(93)90189-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The application of a plasma-sprayed hydroxyapatite coating to an orthopaedic implant may affect iu fatigue performance. The effect of such a coating on Ti-6Al-4V was studied using rotating bend fatigue tests. It was found that the fatigue endurance limit was reduced by approximately 40% after a commercial plasma-spraying process, while similar specimens coated via an adhesive bonding route showed no such decrease. The reasons for this are discussed, and the enhanced initiation of fatigue cracks in the plasma-sprayed specimens is ascribed to the severe grit blasting process used to ensure the adhesion of the plasma-sprayed coatings, and to an effect of the plasma-spraying process itself.

引用

页码：270 / 274

页数：5

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