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

作者：Wang, Haomin^*; Lu, Zhongwen; Huang, Zhiyong; Cedelle, Julie; Wang, Qingyuan

来源：Ceramics International, 2018, 44(11): 12472-12476.

DOI：10.1016/j.ceramint.2018.04.038

• Nanoindentation
• Indentation size effect
• Hardness
• Grain boundary sliding
• Nano ceramic

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.

• 出版日期2018-8-1
• 单位四川大学; 成都大学