Characteristics of silicon nitride heating element

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silicon nitride heating elementIt is an important kind of high temperature structural ceramics, which has the characteristics of small thermal expansion coefficient, high hardness, high elastic modulus, good thermal temperature performance, chemical stability and good edge performance. In addition, it is also resistant to oxidation, corrosion resistance and so on. Pure silicon nitride does not absorb microwave energy at room temperature, nearly microwave transparent material, relying on its own dielectric loss to heat.

silicon nitride heating elementSmall size, light weight, high power density. Power> 100W/cm2, much higher than 2-8W/cm2 of ordinary metal heating body and 20-80W/cm2 of ordinary silicon nitride ceramic heating body.

Through the development of molding and sintering technology to improve the process, can be prepared to achieve a more complex shape for any temperature data distribution of silicon nitride ceramic heating body, such as cylindrical. Compared with the traditional sheet ceramic heating element, it has its own higher thermal efficiency and thermal shock resistance, and the service life of the product is greatly improved;

Research silicon nitride special ceramic heating body, through the formulation improvement, process selection, sintering process improvement, the preparation of a new type of silicon nitride ceramic heating body, silicon nitride heating body mainly has the following characteristics:

1.silicon nitride heating elementIt has the advantages of small size, light weight and high power density.

2. By improving the molding and sintering process, a complex shape silicon nitride ceramic heater, such as a cylinder, can be prepared to achieve any temperature distribution. Compared with traditional sheet ceramic heaters, it has higher thermal efficiency and thermal shock resistance, which greatly improves the service life of the product

3. Excellent thermal performance. The heating efficiency is more than 98%, and the high temperature of 800-1000 ℃ can be reached in a few seconds. It can directly heat water, gas, kerosene, metal and other media without noise and pollution;

4. Silicon nitride heating element for high reliability.

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