Title
Analyzing indentation stress-strain response of LaGaO3 single crystals using spherical indenters
Abbreviated Journal Title
J. Eur. Ceram. Soc.
Keywords
nanoindentation; perovskites; mechanical properties; hardness; modulus; LaGaO3; ELASTIC-MODULUS; HARDNESS; Materials Science, Ceramics
Abstract
In this work, a new approach to spherical nanoindentation analyses has been described and utilized to study the anisotropy of mechanical properties for (100) and (001) LaGaO3 single crystals. Unlike sharp indenters, indentations by spherical indenters permit the nanoindentation load-displacement curve to be converted more reliably into indentation stress-strain curves. Using a new definition of indentation strain, we present indentation stress-strain curves that are relatively insensitive to the radii of the indenters. These curves allow the modulus of the sample to be evaluated from the elastic loading segment, instead of the common practice of approximating it from the elastic unloading segment. These measurements indicate that the (100) LaGaO3 Single crystal has a higher modulus and a higher hardness compared to the (001) sample. (C) 2008 Elsevier Ltd. All rights reserved.
Journal Title
Journal of the European Ceramic Society
Volume
28
Issue/Number
11
Publication Date
1-1-2008
Document Type
Article
Language
English
First Page
2213
Last Page
2220
WOS Identifier
ISSN
0955-2219
Recommended Citation
"Analyzing indentation stress-strain response of LaGaO3 single crystals using spherical indenters" (2008). Faculty Bibliography 2000s. 819.
https://stars.library.ucf.edu/facultybib2000/819
Comments
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