Research Status And Development Prospect Of Alumina Ceramic Rollers

Time:2018/7/25 17:39:36 Click on:

With the development of science and technology, especially the development of energy and space technology, the performance requirements of materials are getting higher and higher. alumina ceramic rollers have high strength, high temperature resistance, good insulation, corrosion resistance, and good electromechanical Performance, widely used in electronics, machinery, chemical industry. For example, it can be used as a vacuum device, a circuit substrate, etc., by utilizing its high mechanical strength and high insulation resistance.

High temperature oxides are difficult to sinter, one of the important reasons is that they have a large lattice energy and a relatively stable structural state. Particle migration requires higher activation energy, ie, lower activity, using small crystal grains and specific surface area. The large, highly surface-active monodisperse ultrafine Al23 powder is initially sintered between primary particles. Due to the short diffusion distance between the particles, only a lower sintering temperature and sintering activation energy are required.

Due to the defect energy of the alumina ceramic roller, the particle activity of the defect is increased, and it is easier to get rid of the constraint of the original position and enter another state of motion. These activated powders will greatly facilitate the mass transfer process, thereby reducing the sintering activation energy and sintering temperature.

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