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  • ZrB2-Zirconium diboride
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Zirconium Diboride and its application

Overview of Zirconium Diboride Powder

Zirconium diboride (ZrB2) is a kind of high covalent refractory ceramic material with a hexagonal crystal structure. It is an ultra-high temperature ceramic (UHTC) with a melting point of 3246°C. Its relatively low density of about 6.09 g/cm3(the measured density may be higher due to hafnium impurities) and good high-temperature strength make it a candidate for high-temperature aerospace applications, such as hypersonic flight or rocket propulsion systems. It is an unusual ceramic with relatively high thermal and electrical conductivity and has the same properties as titanium diboride and hafnium diboride with the same structure.
Zirconium diboride is a hard gray crystal in nature. Zirconium boride has three components: zirconium boride, zirconium diboride, and zirconium tribromide. Only zirconium diboride is stable over a wide temperature range. Industrial production is mainly zirconium diboride. Zirconium diboride is a hexagonal crystal, gray crystal or powder, with a melting point of 3040℃. Zirconium diboride is resistant to high temperature and has high strength at both normal and high temperatures. Good shock resistance, low resistance, oxidation resistance at high temperature.With metallic luster. It has a metallic nature. The resistance is slightly lower than zirconium. It stabilizes over a wide temperature range after heating. Although the melting point is high, it can be sintered at lower temperatures.
What is the applications of Zirconium Diboride Powder
With the rapid development of science and technology, aircraft such as long-range missiles, rockets, space shuttles, spaceships and supersonic aircraft are developing in the direction of higher speed, greater thrust, higher altitude and more safety, which puts forward higher requirements for the various performance of aircraft. Due to the intense friction between the aircraft and the atmosphere, a large amount of heat is generated. The first thing to improve is the high-temperature resistance of aircraft materials, including refractory metals, carbides, carbon-carbon materials and borides, etc. Zirconium diboride ceramics are widely used in various fields because of their high melting point, high hardness, high strength, high erosion resistance, high chemical stability, high electrical conductivity and other advantages.
Zirconium diboride is a kind of strategic material, which has high hardness, high thermal conductivity, good oxidation resistance and corrosion resistance. It is mainly used in the thermal protection systems, high-temperature electrodes and heat trap pipes of reentry aircraft.
Zirconium diboride can also be used as a high-temperature resistant material for aerospace, a wear-resistant and smooth solid material, a cutting tool, a thermocouple protection tube for temperature difference and an electrode material electrolyzing molten compounds. Especially suitable for the surface of the rolling bearing ball.
Zirconium diboride is a good candidate material for thin-film electrical components used in sensors, actuators and Microsystems operating in high-temperature environments due to its metal-like conductivity and melting temperature of 3245°C.
Zirconium diboride is used in the special ceramic refractories industry, nuclear industry, aerospace industry and military industry. Zirconium diboride can be used as a surface coating on rolling balls and smooth solid materials.
 Carbon fiber reinforced zirconium diboride composite is high density, while silicon carbide fiber-reinforced zirconium diboride composite is brittle and catastrophic damage.