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Why ZTA ceramic tile is an effective means of toughening?

Compared with alumina products: higher density, better wear resistance, and greatly improved toughness;

Compared with zirconia products: low price and high cost performance;

Specific gravity: 4.2-4.3g/cm3

Studies have shown that the compactness of the submicron Al2O3 and ZrO2 or ZrO2 (3Y) complex with a small initial powder particle size is greater than the density of the micron Al2O3 and ZrO2 or ZrO2 (3Y) composite, and the strength is higher; in heterogeneous particles Evenly separated from each other and less agglomeration, the higher the powder activity, the easier it is to sinter and dense. In order to obtain a dense sintered body, the size and distribution of the original powder of the same material should be as small and narrow as possible.

The key to preparing nano composite ceramics is to make nano particles evenly dispersed in the ceramic matrix. With the rapid development of ultra fine powder preparation technology, people can use a variety of methods, such as sol-gel method-micro emulsion method, CVD method, self-propagating method, in-situ generation method, liquid phase dispersion coating method and other advanced processes Means for preparing single-phase nano-powder or directly making nano-micron composite ceramic materials, which provides a good foundation for the preparation, research and development of nano-composite ceramics. The preparation of ZTA ceramic tiles mainly includes mechanical mixing method, multi-phase suspension mixing method, precipitation coating method and so on. The powders prepared by different preparation processes have a great influence on the performance of the ceramic body. It is understood that the performance of the ceramic body prepared by the liquid mixing method is much better than the mechanical mixing method.


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