Sintering temperature of ceramic capacitors

The sintering temperature refers to the temperature when the ceramics are sintered to achieve small pores, large shrinkage, compact products, excellent performance, or a solid aggregate state. The temperature during sintering is called the sintering temperature. If the temperature continues to rise, the green body starts to deform and overfire and expand. The temperature range between the sintering temperature and the start of overheating is called the sintering temperature range.

Ceramic capacitors undergo complex physical and chemical changes during the sintering process, such as dehydration of raw materials, melting of fusible substances, formation of liquid phases, disappearance of old crystal phases, constant changes in the amount of compounds generated in new crystal phases, and liquid phases. Constant changes in composition, quantity and viscosity. At the same time, the porosity of ceramics is gradually reduced, and the density is continuously increased. When the porosity of ceramic capacitors is small, the state when the density is high is called sintering, and the temperature during sintering is called sintering temperature.

The shrinkage and porosity of ceramic capacitors change with increasing temperature during heating. When the porosity begins to decrease and the linear shrinkage is less than or equal to 6%, the corresponding temperature is called the sintering temperature. As the temperature increases, the porosity It will continue to drop until a certain temperature, when the shrinkage reaches more than 95% of the theoretical value, is the temperature at which sintering is completed. A suitable temperature is selected in the sintering range. As the high temperature of the sintered material, it is technically called the sintering temperature.

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