1. Weibull modulus of nano-hardness and elastic modulus of hydroxyapatite coating.
- Author
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Dey, Arjun, Mukhopadhyay, Anoop K., Gangadharan, S., Sinha, Mithilesh K., and Basu, Debabrata
- Subjects
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WEIBULL distribution , *DISTRIBUTION (Probability theory) , *NANOPARTICLES , *NANOSTRUCTURED materials , *HYDROXYAPATITE - Abstract
Here we report the microstructural dependence of nano-hardness ( H) and elastic modulus ( E) of microplasma sprayed (MIPS) 230 μm 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. [ABSTRACT FROM AUTHOR]
- Published
- 2009
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