ZrB2 Used As Ultra-high Temperature Ceramic
European Commission President Ursula von der Leyen recently called on India and other countries to support sanctions against Russia over the Ukraine incident. At The Raisina Dialogue forum, von der Leyen said, "We earnestly appeal to all members of the international community to support our efforts to achieve lasting peace."
Von der Leyen says countries around the world that have been suffering from the virus for two years must now deal with higher food, energy, and fertilizer prices. What is happening in Ukraine will not only determine the future of Europe, but also have profound implications for the rest of the world.
Because of the Russia-Ukraine conflict, the prices of many other commodities like the ZrB2 are expected to continue to rise in the future.
Zirconium Diboride ZrB2 Powder
Zirconium diboride with the chemical formula ZrB2 is a kind of high covalent refractory ceramic with a hexagonal crystal structure.
ZrB2 is an ultra-high temperature ceramic (UHTC) with a melting point of 3246 °C, which combines with its relatively low density of about 6.09 g/cm3 and good high-temperature strength, making 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, sharing the same properties as the isomorphic titanium and hafnium diboride.
ZrB2 parts are usually hot-pressed (applying pressure to heated powder) and then machined into shape. Sintering of ZrB2 is hampered by the covalent nature of the material and the presence of surface oxides that increase grain coarsening prior to densification during sintering. The pressureless sintering of ZrB2 can increase the sintering driving force by the reaction of sintering additives such as boron carbide and carbon with surface oxides, but the mechanical properties are reduced compared to hot-pressed ZrB2.
Adding about 30 vol% SiC to ZrB2 to improve its oxidation resistance, thus forming a protective oxide layer, which is similar to the protective alumina layer.
ZrB2 is used for ultra-high-temperature ceramic matrix composites (UHTCMCs).
Zirconium Diboride ZrB2 Ceramics
Zirconium diboride ceramics have been attached importance and applied in the fields of high-temperature structural ceramics, composites, refractories, electrode materials, and nuclear control materials because of their high melting point and hardness, good electrical and thermal conductivity, and strong neutron control ability, like turbine blades in the aviation industry, magnetic fluid power generation electrodes, etc.
In addition, compared with many ceramic materials, it has better electrical conductivity and can be used to produce complex-shaped parts by wire cutting technology.
Applications of Zirconium Diboride ZrB2 Powder
1. Refractory material
ZrB2 ceramic is an excellent special refractory material, which can be used as high-temperature thermocouple protection bushing, casting mold, the crucible of metallurgical metal, etc. When used as thermocouple protection bushing, its airtightness is not very good and it has conductivity. Therefore, it must be combined with an aluminum oxide inner casing to carry out effective temperature measurement work. The thermocouple sleeve of this material can be used continuously for a long time in molten iron and brass melt. ZrB2 ceramics can also be used as antioxidants in refractories.
2. Electrode material
ZrB2, due to its low resistivity and electronic conduction mechanism, is suitable for electric contact materials and electrode materials, and can be used in metal thermocouple electrodes and high-temperature heating elements. In 1994, researchers developed a casing thermocouple material paired with ZrB2 and graphite. It has been proved by experiments that it can work in an oxidizing atmosphere at 1200~1600℃. The thermocouple value is large, up to about 70mV at 1600℃, and the thermoelectric potential rate is high. It can play a role in continuous temperature measurement in some special occasions where metal thermocouple and radiation thermometer are not applicable, and is a good thermocouple material.
Due to the high hardness of ZrB2, it is a good wear-resistant material and has a good application in cutting tools and cutting tools. Because of its excellent corrosion resistance, ZrB2 film has been studied deeply.
Zirconium Diboride ZrB2 Powder Supplier
Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality chemicals and Nanomaterials, including silicon powder, nitride powder, graphite powder, zinc sulfide, calcium nitride, 3D printing powder, etc.
If you are looking for high-quality zirconium diboride ZrB2 powder, please feel free to contact us and send an inquiry. ([email protected])
Since the beginning of this year, China's macro policies have made continuous efforts to stabilize economic growth. America and Europe are raising interest rates to control inflation. On March the European Central Bank left its three key interest rates unchanged and began to scale back its asset-purchase programme. Then the Federal Reserve raised the target range of the federal funds rate by 25 basis points to 0.25%-0.5%. The accelerated tightening of monetary policies in the US and Europe pushed capital back to the US and increased interest rates, which will definitely increase the risk of RMB depreciation and capital outflow. The price and market of the ZrB2 will also be affected, resulting in a range of fluctuations. You are welcome to contact us for the latest quotation of ZrB2.