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ZrB2 can be used as an ultra-high-temperature ceramic (UHTC), with a melting temperature of 3246°C. Its combination with its low density, 6.09g/cm 3, and excellent high-temperature resistance makes it suitable for aerospace applications such as hypersonic flight, rocket propulsion, or other high-temperature aerospace uses.
This is an uncommon ceramic that has high thermal and electric conductivity. It shares the same properties with the hafnium and isomorphic Titanium.
ZrB2 parts can be hot-pressed, which means that they are heated to a powder before being machined. Covalentity of ZrB2 and surface oxides can cause problems in ZrB2 sintering. This causes grain to become coarser before it is densified during sintering. While pressureless ZrB2 can boost the sintering force via the reaction between sintering additions carbon and boron with surface oxidess, the mechanical properties are less than that of hot-pressed ZrB2.
You can add 30 vol% SiC (ZrB2) to increase the oxidation resistance. The protective oxide layer is very similar to protective alumina.
ZrB2 is used for ultra-high-temperature ceramic matrix composites (UHTCMCs).
Zirconium Diboride ZrB2 Ceramics
The high melting points and high conductivity of zirconium-diboride ceramics make them a valuable resource for nuclear control materials and composites.
Additionally, it is more conductive than many other ceramic materials. It can also be used in wire cutting to create complex-shaped parts.
Zirconium Diboride Uses
1. Material used for refrigeration
ZrB2 is a great special refractory substance that can be used to make casting molds, high-temperature temperature thermocouple protector bushings, and the crucible for metallurgical material. The airtightness and conductivity of ZrB2 ceramic are not great when it is used for thermocouple shielding. It must be combined to an aluminum oxide outer casing in order to perform temperature measurement. You can use the thermocouple sleeves of this material in brass and molten steel melt for long periods. ZrB2 ceramics may also be used in refractories as antioxidants.
2. Materials for electrode
ZrB2 can be used for electrodes, electric contact material, and thermocouple electrodes. A casing thermocouple material was developed in 1994 by researchers that could be used with ZrB2 or graphite. The ability to work under an oxidizing atmosphere (1200-1600) has been demonstrated by experiment. A large value thermocouple, at 70mV at 1600 is possible, as well as a very high thermoelectric potential rate. The thermocouple can be used to measure temperature in special circumstances where a metal thermocouple or radiation thermometer is not available.
ZrB2 has an excellent wear resistance and is used for cutting tools. ZrB2 is a highly resistant material that has attracted a lot of attention due to the fact it can withstand corrosion.
Zirconium Diboride Supplier
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