ZHANG Wei,ZHANG Jin,DUAN Chun-lei,GENG Hao,HAN Yang
In order to better understand the development trend of Al2O3 thermal shock resistant ceramics and to provide design consideration for the preparation of Al2O3 thermal shock resistant ceramics, the commonly used thermal shock resistance test methods for the Al2O3 thermal shock resistant ceramics, the influence of microstructures, surface conditions and geometric dimensions of Al2O3 ceramics on the thermal shock resistance, the feasibility of second phase method to improve the thermal shock resistance of Al2O3 ceramics and the research progress on porous Al2O3 thermal shock resistant ceramics, were reviewed. Through the addition of ZrO2, rare earth compounds, low thermal expansion coefficient components or high thermal conductivity components, some mechanical properties of Al2O3 ceramics, e. g. bending strength, fracture toughness and elastic modulus, can be enhanced, and as well as(or)the thermal properties of Al2O3 ceramics, such as thermal expansion coefficient and thermal conductivity, so as to improve the thermal shock resistance of Al2O3 ceramics. Furthermore, laminated Al2O3 composite thermal shock resistant ceramics will become a research direction in the future.