An ultra-high temperature structural ceramic material: zirconium diboride ceramics

 Overview of Zirconium Diboride ZrB2 Powder

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.

An ultra-high temperature structural ceramic material: zirconium diboride ceramics

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, 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.

Application of Zirconium Diboride ZrB2 Powder

Zirconium diboride ceramics are valued and applied in the fields of high-temperature structural ceramic materials, composite materials, refractory materials, electrode materials, and nuclear control materials because of their high melting point and hardness, good electrical and thermal conductivity, and strong neutron control ability. Such as: turbine blades and magnetic fluid power generation electrodes in the aviation industry. In addition, compared with many ceramic materials, it has better electrical conductivity and can be used to produce parts with complex shapes through wire cutting technology.

①Refractory

ZrB2 ceramic is an excellent special refractory material. It can be used as a high-temperature thermocouple protection tube, mold, metallurgical metal crucible, etc. When used as a thermocouple protection tube, it is not very airtight and conductive. Therefore, it must be matched with the alumina inner sleeve for effective temperature measurement. The thermowell of this material can be used continuously for a long time in molten iron and brass melt. ZrB2 ceramics can also be used as an antioxidant for refractory materials.

② Electrode material

Because ZrB2 has a very low resistivity and the conductive mechanism is electronic conduction, it is suitable for electric shock materials and electrode materials, and can be used in the electrodes of metal thermocouples and high-temperature heating elements. In 1994, a researcher developed a sleeve-type thermocouple material paired with ZrB2 and graphite. Experiments have shown that it can work in an oxidizing atmosphere at 1200~1600℃. The value of the thermocouple is relatively large, which can reach about 70mV at 1600℃. , The thermoelectric potential rate is higher. It can play a role in continuous temperature measurement in some special occasions where metal thermocouples and radiation thermometers are not suitable. It is a good thermocouple material.

③Other materials

Because of its extremely high hardness, ZrB2 is a very good wear-resistant material, and has good applications in cutting tools and cutting tools. Because ZrB2 has good corrosion resistance, the anti-corrosion and anti-oxidation film of ZrB2 has been studied in depth abroad.

Zirconium Diboride ZrB2 Powder Price

The price of zirconium diboride ZrB2 powder will vary randomly with factors such as the production cost, transportation cost, international situation, exchange rate, market supply and demand of zirconium diboride ZrB2 powder. Tanki New Materials Co., Ltd. aims to help all 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 contact us for 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.

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