Zirconia toughened aluminum (ZTA) hasbeenwidely studied as a new type of toughened ceramic
Abstract:Zirconia toughened aluminum (ZTA) hasbeenwidely studied as a new type of toughened ceramic. The aim of this investigation is to review the recent literatures on its synthesismechanisms, new preparation.methods of composite powders and applications. The problems in preparation techniques and developmental trend are discussed aswel.l Key words:ZTA; strengthening and tougheningmechanisms; preparation technology of composite powders;current research situation; development trend
Al2O3 ceramic is widely used in high temperature, strong corrosion, and low fracture toughness of Al2O3 ceramic fatal weakness, it limits the use of a greater range. Using ZrO2 transformation toughening, particle dispersion strengthening or fiber and whisker reinforcement method, the mechanical properties of ceramic materials is greatly improved an important development direction of advanced ceramic composites. From the ZrO2/Al2O3 system phase diagram [1] shows that even at very high temperatures between ZrO2 and Al2O3 will not generate solid solution, which provides a theoretical basis for the study of ZrO2/Al2O3 composite ceramics. The effect of ZrO2, ZTA ceramic is the best toughening ceramic in recent years. And many scholars have done a lot of research on the composite ceramics of the system, with the rapid development of ceramic technology, the research of ZTA composite ceramics has become a hot research topic in the field of ceramic materials. In recent years, the domestic and foreign literature The composite mechanism, preparation method and development trend of ZTA ceramics are reviewed in this paper.
Tel: +86-10-8890 9291 MP: +86-13901376361 