Zirconia ceramics-how to sinter at low temperature

With the continuous development of society, zirconia ceramics have been widely used in the field of structural ceramics. The sintering of zirconia ceramics is a very important process. The sintering quality will directly affect the subsequent ceramic processing, so the only way to adjust the sintering temperature is appropriate. Its embryonic body will be perfect. Zirconia ceramics can be sintered in many ways. So how does zirconia ceramics undergo low-temperature sintering?

Next, a lot of editors will introduce to you:

1. Low-temperature sintering using powder

        The preparation methods of sinterable powders can be roughly divided into general powder preparation methods and special powder preparation methods. The difference between them is mainly the difference in the preparation process. The preparation method referred to here refers to the chemical composition of the mother salt, the preparation conditions of the mother salt, calcination conditions, pulverization conditions, etc.

        With the miniaturization of powder particles, the microstructure and performance of the powder will undergo great changes, especially for sub-micron nanometer powders, the internal pressure, surface activity, and melting point will be unexpected Performance. Therefore, the sintered powder can accelerate the kinetic process, reduce the sintering temperature, and shorten the sintering time during the sintering process.

2. The introduction of additives for low-temperature sintering

        Additives can make the material exhibit new functions, improve strength, inhibit grain growth, and promote sintering. According to the action mechanism of additives, the method can be divided into the following two categories:

        ⑴ The introduction of additives increases the lattice vacancies, is easy to diffuse, and accelerates the sintering speed.

        (2) The introduction of additives makes the liquid phase formed at a lower temperature, and crystallization appears after the liquid phase. It can make viscosity flow and promote sintering.

        This is an introduction to how the above-mentioned zirconia ceramics are sintered at low temperatures. Zirconia ceramics are widely used in industrial production. The preparation of zirconia ceramics by low-temperature sintering can reduce energy consumption and reduce product costs.