Abstract:

The most important feature that makes the engineering ceramics unique with high hardness and stretching resistance is their resistance to high temperature conditions. Therefore, these materials have quite broad scope of application, addressing many areas such as the aviation, space, automotive, electronic and energy sectors. Many approaches have been developed to further enhance the functionality of engineering ceramics. The most important of these is the healing of the breakdown of ceramics. In recent years, research has also attracted attention to the development of smart ceramics by giving the ceramics the ability to self-heal at high temperatures. The purpose of the expression "self-healing" here is the fact that the microbreaks formed during or before use on the surface of the material are recovered at high temperature by repairing the material back to its strength. While the use of engineering ceramics at high temperatures is a common problem, it is almost impossible to detect this damage immediately and in the process of the system’s operation by traditional methods. Thus, giving the self-reparation feature to the ceramic material during work at high temperature will increase the service life of this material and the safety of the system used. In this study, in the light of the relevant literature, the mechanisms aimed at increasing the broken density of ceramics, the importance of self-healing ceramics, the mechanism of self-healing, their method and parameters of production, their compositions, the temperature values necessary for the mechanism to become active, the changes in the microbuilding and mechanical characteristics.

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