Telluride is a compound of tellurium and metal or non-metal. For example, the representative of telluride with non-metal is hydrogen telluride, which is a colorless, odorous toxic gas; metal telluride has copper telluride, which is difficult Dissolved in water.
80% of the tellurium consumption is used in the metallurgical industry: adding a small amount of tellurium to steel and copper alloys can improve its cutting performance and increase hardness; in white cast iron, tellurium is used as a carbide stabilizer to make the surface strong and wear-resistant Lead with a small amount of tellurium can improve the corrosion resistance, wear resistance and strength of the material, and is used as a sheath for submarine cables; adding tellurium to lead can increase the hardness of lead, and is used to make battery plates and print lead.
Tellurium can be used as an additive for petroleum cracking catalysts and as a catalyst for making ethylene glycol. Tellurium oxide is used as a colorant for glass. High purity tellurium can be used as the alloy component of thermoelectric materials. Bismuth telluride is a good refrigeration material. Tellurium and several tellurides are semiconductor materials. Ultra-pure tellurium single crystal is a new type of infrared material.
In addition, in timed explosives, tellurium is also a fuze for delayed explosion. As a raw material for the manufacture of fungicides, tellurium can also extract iodine isotopes in medical treatment to cure thyroid diseases.
It is mainly used as a catalyst for petroleum cracking, a brightener for electroplating solution, and a coloring material for glass. It is added to steel to increase its ductility, and it is added to lead to increase its strength and corrosion resistance. Tellurium and its compounds are another semiconductor material.