Ultra High Temperature Ceramics Powder (UHTCs) Including Hafnium Diboride, Hafnium Carbide, Zirconium Diboride, Aluminum Nitride Whisker
Application:
* Engines
* Ultrasonic equipment
* Plasma arc electrodes
* Cutting tools
* The thermal elements of furnaces and heat shields
* The aerospace industry
Product Introduction:
The ceramic powders produced in the Pishro Ceramic Mehr Company include hafnium diboride, hafnium carbide, zirconium diboride, zirconium carbide, aluminum nitride whiskers, tungsten carbide, and hexagonal boron nitride. These high-temperature ceramics are a group of inorganic and non-metallic materials with a melting point above 3000 degrees Celsius and are generally made of borides and carbides of transition metals such as zirconium, hafnium, niobium, and tantalum.
Borides have a higher position among high-temperature ceramics due to the simultaneous combination of thermal shock resistance, creep resistance, and thermal conductivity. Also, among the borides, hafnium diboride and zirconium diboride show the best oxidation resistance at high temperatures, good thermal and electrical conductivity, chemical stability, and high hardness. Zirconium diboride and hafnium diboride are oxidation-resistant materials at temperatures above 2000°C. Also, in the comparison between diboride zirconium and diboride hafnium, diboride zirconium has a lower density and price than diboride hafnium.
In the carbothermal synthesis of zirconium diboride and hafnium diboride, a boron carbide side product is also possible if the process variables are not carefully controlled. Although boron carbide is a valuable material with functional properties, it will destroy properties along with zirconium and hafnium borides.
Technical Specifications:
* Sub-micron dimensions and close to the nano scale
* Hafnium carbide: one of the most resistant materials to temperature with a melting point of 3900 degrees Celsius, melting point and very high hardness.
* Zirconium carbide: has a melting point of 3500 degrees Celsius, high hardness and low density of 6.75 grams per cubic centimeter.
* Tungsten carbide: melting temperature of 2900 degrees Celsius, very high hardness and high Young’s modulus, bulk modulus and high shear modulus.
* Aluminum Nitride: in different forms such as particles, thin layers (films), whiskers, etc., excellent mechanical properties, very high thermal conductivity and electrical conductivity equal to that of an insulator in each of the mentioned forms.
* Hexagonal Boron Nitride: having a structure similar to graphite due to boron and nitrogen ionic bonds, as a reinforcing material with the aim of improving resistance to thermal shock, improving fracture toughness and also increasing the possibility of machining.
Advantages:
* High hardness
* High thermal stability
* High solid phase stability
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Type | This product is a final B2B consumer product. |