Ceramics International 2018-04-06

Size effect on hardness for micro-sized and nano-sized YAG transparent ceramics

Haomin Wang, Zhongwen Lu, Zhiyong Huang, Julie Cedelle, Qingyuan Wang

Index: 10.1016/j.ceramint.2018.04.038

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Abstract

Traditional micro-sized and nano-sized YAG transparent ceramics were tested by nanoindentation at different peak loads. The micro-sized YAG transparent ceramics show a marked indentation size effect (ISE). However, for the nano-sized YAG transparent ceramics, the hardness was constant in the whole investigated range without any evidence of ISE. We show that the absence of indentation size effect for nano-sized YAG transparent ceramics can be accurately modeled using the plastic deformation mechanism of grain boundary sliding.