Alumina insulating ceramic parts products have good conductivity mechanical strength and high temperature resistance, the alumina insulating ceramic structure in high temperature conditions will occur what changes

1. Creep, because the insulating alumina ceramic structural parts will be affected by external force at high temperature, then with the extension of time is not short, it will slowly and continuously produce plastic changes, this phenomenon can be called creep,The creep of alumina ceramic structural parts is actually closely related to the stress and temperature. When the stress increases or the temperature rises, the creep speed is also accelerated

2. Graphitization and spheroidization, because graphite is relatively low in strength and mainly appears in sheets, it will lead to a lot of reduction in strength of the material, and brittleness will also increase, so we call it graphitization,Also under the condition of high temperature, the internal structure of alumina ceramics will contain a large number of cementite, so the formation of coarse grain cementite,It is also directly incorporated into the ferrite, and the main thing is that the carburizing process gradually changes from sheet to ball, so we call it spherification

3. Performance after thermal fatigue, if the structure of alumina ceramics is kept in an alternating hot and cold working environment for a long time, the error of the material itself will change because of thermal stress, and small cracks will gradually appear, eventually leading to rupture,If the product needs to work in high temperature fluctuation environment, the thermal fatigue aspect of alumina ceramic structure should be considered