Evaluation of residual stress in microplasma sprayed hydroxyapatite coating by nanoindentation

被引：21

作者：

Dey, Arjun ^{[1
]}

Mukhopadhyay, Anoop K. ^{[2
]}

机构：

[1] Indian Space Res Org, ISRO Satellite Ctr, Thermal Syst Grp, Bangalore 560017, Karnataka, India

[2] CSIR, Cent Glass & Ceram Res Inst, Kolkata 700032, India

来源：

CERAMICS INTERNATIONAL | 2014年 / 40卷 / 01期

关键词：

Hydroxyapatite; Coating; Microplasma spraying; Residual stress; Nanoindentation; MECHANICAL-PROPERTIES; TITANIUM; INTERFACE; STRENGTH; BEHAVIOR; FRACTURE; POWDERS; FILMS;

D O I：

10.1016/j.ceramint.2013.06.073

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：

The evaluation of residual stress in bioactive hydroxyapatite (HAP) ceramic coating by nanoindentation technique has been attempted successfully for the very first time ever in the present work. The HAP coatings were deposited on surgical grade 316 L austenitic stainless steel and Ti-6Al-4V substrates by microplasma spraying (MIPS) process. The coatings had Ca/P ratio of 1.67 and were similar to 80-90% crystalline. The results showed a residual compressive stress of similar to 22 MPa for the MIPS-HAP coatings on the SS316L substrates. For the coatings deposited on the Ti-6Al-4V substrates, however, a residual tensile stress of similar to 11 MPa was estimated. These data matched well with those obtained by XRD based technique. Thus, favorable data comparison provides further support to the efficacy of the nanoindentation based technique utilized in the present work for residual stress estimations. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：1263 / 1272

页数：10

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