SiC heating elements for lab and industrial furnace

La description

Silicon carbide (SiC) electric heater rod for element temperatures up to ***5°C (***7°F), for industrial and lab furnaces/ovens,available in a wide variety of standard sizes and geometries, or in customized designs.
Differen shapes and sizes available


wooden+steel frame package

三、Chemical Properties of SiC heating elements rods

Antioxidant of SiC Heating Elements
The element start to being oxidized when heat to **0℃ in air atmosphere, when temperature up to ********0℃, and a  protect film will be generated in the surface of hot zone,when temperature up to ***0℃,SiO2 film will be crystallized into cristobalite .The protect film get into thicker when the temperature increase which makes the resistance increase and the elements life time shortened.

Though the element oxidized very slowly in heating processing, it also will make the resistance increased along with the working time continues, this phenomena called component aging, in order to slow aging speed,Microsupertech use special technique to coated elements surface with a kind of  protect film, which make antioxidant stronger and then increase the SiC elements life time.

The alkali and alkaline metal oxide effect on elements
The alkali & alkaline metal oxide will react with SiC at about ***0℃ and generate silicate, which calls alkali-chemical corrosion, and can influence the SiC elements heating effect.

Melting metal effect on SiC elements
Some metals, such as Cobalt, Nickel, Chrome and so on, can corrade the SiC element when they are in melting state in high temperature,it also affects SiC elementslife time.

四、Electric property of SiC heating element
SiC heating elements rods have large resistance unit area .When it is heated in air and the surface temperature of the hot zone reaches ***0℃, its unit resistance is *******0Ω*mm²/m and its resistance changes with temperature,please see below drawing for details: