How alumina ceramic rods are sintered

Time:2017/6/5 9:36:58 Click on:

Alumina ceramic rod plasma sintering method mainly controls the sintering process through several parameters such as pressure, temperature and time. In the process of temperature-increasing sintering, heating is based on the convection and radiant heating of the sample by the heating element, so the heating rate is generally slow. Due to the rapid temperature increase favoring the development of sintering and microstructure, people have been trying to obtain a very high rate of temperature increase. The realization of high-speed heating cannot be achieved by conventional electric heating. Plasma heating can achieve extremely high heating rates that cannot be achieved by electric heating. Plasma heating principle.

Plasma sintering refers to the sintering of materials using high temperature and electron energy formed during gas discharge and controlled atmosphere. Since the plasma can reach a high temperature instantaneously, its heating rate can reach 1000 °C/min or more, so the plasma sintering technology is a relatively new non-pressure rapid high-temperature sintering technology for laboratory use. This method was first used for the sintering of A12 03 ceramics in 1968. After so many years of development, this method has been successfully used for the sintering of various fine ceramics such as AI23, Y23 Zr2, Mg0, SiC, and the like.

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