Manufacturing method and application of zirconium diboride ZrB2

Zirconium boride is a chemical substance and its molecular formula is ZrB2. Nature gray hard crystals. Zirconium boride has three components: zirconium monoboride, zirconium diboride, and zirconium triboride. Only zirconium diboride is stable in a wide temperature range. Industrial production is mainly based on zirconium diboride. Zirconium diboride is a hexagonal crystal, gray crystal or powder, with a relative density of 5.8 and a melting point of 3040°C. High temperature resistance, high strength at room temperature and high temperature. Good thermal shock resistance, low resistance, anti-oxidation at high temperature. The melting point is about 3000°C. With metallic luster.

ZrB2 preparation method of zirconium diboride

There are four main preparation methods: ① direct reaction between metal zirconium and boron; ② boron carbide method; ③ carbon reduction method; ④ vapor deposition method.

The physical and chemical properties of zirconium diboride ZrB2

Nature gray hard crystals. Zirconium boride has three components: zirconium monoboride, zirconium diboride, and zirconium triboride. Only zirconium diboride is stable in a wide temperature range. Industrial production is mainly based on zirconium diboride. Zirconium diboride is a hexagonal crystal, gray crystal or powder, with a melting point of 3040°C. High temperature resistance, high strength at room temperature and high temperature. Good thermal shock resistance, low resistance, anti-oxidation at high temperature. The melting point is about 3000°C. With metallic luster. There is metallicity. The electrical resistance is slightly lower than that of metal zirconium. It is stable in a larger temperature range after heating. Although it has a high melting point, it can be sintered at a lower temperature. It is prepared by mixing metal zirconium with boron carbide and boron nitride and heating it to 2000°C in an argon gas stream.

Zirconium diboride ZrB2 powder overview:

Zirconium diboride (ZrB2) is a highly 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 is about 6.09 g/cm3 (due to hafnium impurities, the measured density may be higher) and good high-temperature strength make it a candidate material for high-temperature aerospace applications, such as hypersonic flight or rocket propulsion systems. It is an unusual ceramic with high thermal and electrical conductivity, and has the same characteristics as the same structure of titanium diboride and hafnium diboride.

Zirconium diboride is essentially a hard gray crystal. 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 hexagonal crystal, gray crystal or powder, with a melting point of 3040°C. Zirconium diboride is resistant to high temperatures and has high strength at room temperature and high temperature. Good shock resistance, low resistance, high temperature oxidation resistance. With metallic luster. It has metallic properties. The electrical resistance is slightly lower than that of zirconium. It is stable in a wide temperature range after heating. Although it has a high melting point, it can be sintered at a lower temperature.

ZrB2 parts are usually hot pressed (pressure is applied to the heated powder) and then machined into shape. The covalent nature of the material and the presence of surface oxides hinder the coarsening of the ZrB2 grains during the sintering process, leading to densification. Sintering additives such as boron carbide and carbon can react with surface oxides to increase the driving force for sintering. Usually, ~30 vol% of SiC is added to ZrB2, through which SiC forms a protective oxide layer (similar to a protective coating of aluminum oxide) to improve oxidation resistance.

The high temperature mechanical stability of zirconium diboride comes from the high atomic defect energy (that is, the atoms do not easily deviate from their lattice position), which means that the defect concentration remains low even at high temperatures, thereby preventing material failure.

Application of Zirconium Diboride ZrB2 Powder

With the rapid development of science and technology, aircraft such as long-range missiles, rockets, space shuttles, spacecrafts and supersonic aircraft are moving in the direction of higher speed, greater thrust, higher altitude, and higher safety. Higher requirements. Various performances of the aircraft. Due to the intense friction between the aircraft and the atmosphere, a lot 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. Zirconium diboride ceramics have the advantages of high melting point, high hardness, high strength, high corrosion resistance, high chemical stability, and high conductivity.

Zirconium diboride is a strategic material with high hardness, high thermal conductivity, good oxidation resistance and corrosion resistance. Mainly used for thermal protection system, high temperature electrode and heat trap tube of reentry aircraft.

Zirconium diboride can also be used as aerospace high temperature resistant materials, wear-resistant and smooth solid materials, cutting tools, thermocouple protection tubes and electrode materials for electrolytic melting compounds. Especially suitable for the surface of rolling bearing balls.

Since zirconium diboride has metal-like conductivity and a melting temperature of 3245°C, zirconium diboride is a good candidate material for thin-film electronic components used in sensors, actuators, and microsystems operating in high-temperature environments .

Zirconium diboride is used in the special ceramic refractory industry, nuclear industry, aerospace industry and military industry. Zirconium diboride can be used as a surface coating for rolling balls and smooth solid materials.

Carbon fiber reinforced zirconium diboride composite materials have high density, while silicon carbide fiber reinforced zirconium diboride composite materials are brittle and severely damaged.

Zirconium diboride ZrB2 powder price

The price of zirconium diboride ZrB2 powder will vary randomly with the production cost, transportation cost, international situation, exchange rate, and market demand for zirconium diboride powder ZrB2. Tanki New Materials Co., Ltd. aims to help various industries and chemical wholesalers find high-quality and low-cost nanomaterials and chemicals by providing turnkey customized manufacturing services. If you are looking for zirconium diboride ZrB2 powder, please feel free to send an inquiry to know the latest price of zirconium diboride ZrB2 powder.

Zirconium Diboride ZrB2 Powder Supplier

As a global supplier of zirconium diboride ZrB2 powder, Tanki New Materials Co., Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced engineering materials. The company has successfully developed a series of powder materials (including oxides, carbides, nitrides, single metals, etc.), high-purity targets, functional ceramics, structural devices, and can provide OEM services.