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Property And Application Of Zirconium Diboride Material

2018-11-5      View:

Zirconium diboride is widely used in aerospace, refractory materials, high temperature electrode materials, cutting tools and other fields due to its high melting point, excellent thermal conductivity, good electrical conductivity, strong corrosion resistance and stable crystal structure.


 

ZrB2 has the highest chemical properties of high melting point, high modulus, high hardness, high thermal conductivity and electrical conductivity, and good thermal shock resistance. It has become the most potential material of ultra-high temperature ceramics.

 

ZrB2 ceramic is an excellent special refractory material, which can be used as a high temperature thermocouple protection sleeve, mold, metallurgical metal crucible, etc. When used as a thermocouple protection sleeve, it is not very airtight and has electrical conductivity. Therefore, it must be combined with the alumina inner casing to perform effective temperature measurement. This type of thermowell can be used continuously for a long time in molten molten iron and brass melt. ZrB 2 ceramics also act as antioxidants for refractory materials.

 

Today, single-prepared zirconium diboride materials have not met the needs of aerospace, power, biology, medicine, and chemical industries. In order to overcome the inherent defects of the base material and improve the comprehensive performance of the material, the new coating process has been continuously developed, and the coating and sintering process, the vapor deposition process, the thermal spraying process, and the cladding process have appeared successively.