Size and orientation effect on the mechanical properties of LiAlO2 single crystal

作者：Tsai, S C; Chen, H C; Huang, J C^*; Chang, C M; Chou, M M C

来源：Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 2016, 677: 302-306.

DOI：10.1016/j.msea.2016.09.069

• Strength
• Nanoscale
• LiAlO2
• Size effect, orientation effect

The mechanical responses of LiAlO2 single crystals on the (001) c-plane and (100) a-plane are examined by using nanoindentation and compression testing, extracting the millimeter-, micrometer-, and nanometer-scaled data. Apparent sample size effects on the yield stress are observed, increasing from 0.5 to 1 GPa in millimeter scale up to 11-14 GPa in nano-scale, as a result of flaw reduction, which can be rationalized by the Weibull statistics. Minor orientation effects are also observed. The c-sample possesses higher values than the a-sample in terms of modulus, Poisson's ratio, hardness and yield stress.

• 出版日期2016-11-20
• 单位中山大学