@article{Bao2019, 
author = {Yiwang Bao and Fenghua Kuang and Yi Sun and Yueming Li and Detian Wan and Zongyang Shen and Delong Ma and Lingfeng He},
title = {A simple way to make pre-stressed ceramics with high strength},
year = {2019},
journal = {Journal of Materiomics},
volume = {5},
number = {4},
pages = {657-662},
keywords = {Pre-stressed ceramics, Coating, Strength, Thermal shock resistance},
url = {https://www.sciopen.com/article/10.1016/j.jmat.2019.06.001},
doi = {10.1016/j.jmat.2019.06.001},
abstract = {A pre-stressing design and a simple fabrication technology to substantially improve the strength of ceramic components are presented. Residual surface compressive stress is generated in ceramic components by pressureless sintering of a green bulk coated with a thin layer of low coefficient of thermal expansion (CTE). The stress level can be controlled by changing the cross-section area ratio, Young's modulus ratio and CTE ratio of the coating. Pre-stressed ZrO2 ceramics coated with Al2O3 can achieve a flexural strength of 1330 ± 52 MPa, 45% higher than their uncoated counterpart. Similarly, the flexural strength of building porcelain tiles is increased by 70%, from 67 ± 3 MPa to 114 ± 5 MPa. The damage tolerance of pre-stressed ZrO2 ceramics is excellent with a high residual strength of ~1200 MPa in a thermal shock test at 325 ℃. This simple technique can improve the mechanical performance of ceramic components with no limitation of size and shape.}
}