Dey, Arjun and Mukhopadhyay, Anoop Kumar and Gangadharan, S and Sinha, Mithilesh Kumar and Basu, Debabrata (2009) Weibull modulus of nano-hardness and elastic modulus of hydroxyapatite coating. Journal of Materials Science, 44 (18). pp. 4911-4918. ISSN 0022-2461

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Here we report the microstructural dependence of nano-hardness (H) and elastic modulus (E) of microplasma sprayed (MIPS) 230 mu m thick highly porous, heterogeneous hydroxyapatite (HAP) coating on SS316L. The nano-hardness and Young's modulus data were measured on polished plan section (PS) of the coating by the nanoindentation technique with a Berkovich indenter. The characteristic values of nano-hardness and Young's modulus were calculated through the application of Weibull statistics. Both nano-hardness and the Young's modulus data showed an apparent indentation size effect. In addition, there was an increasing trend of Weibull moduli values for both the nano-hardness and the Young's modulus data of the MIPS-HAP coating as the indentation load was enhanced from 10 to 1,000 mN. An attempt was made in the present work, to provide a qualitative model that can explain such behavior.

Item Type: Article
Subjects: Engineering Materials
Divisions: Bioceramics & Coating
Depositing User: Ashok K Podder
Date Deposited: 22 Feb 2012 08:52
Last Modified: 22 Feb 2012 08:52

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