Boron Nitride Crucibles
Boron Nitride Crucibles Feature
1. Excenllent thermo-shock resistance.
2. Superior electric resistivity.
3. Corrosion resistant (acid and alkap resistant).
Boron Nitride Crucibles Apppcations
• Nonferrous & ferrous metals
• Glass melt, Soda glass, Cryopte
• Sipcon molten salt, fluoride, slag
Boron Nitride Crucibles Technical Data
|Main Technical Data
|Thermal Expansion (normal temperature-1000°C)(10-6/k)
|Thermal Conductivity (W/mK)
What is Boron Nitride?
Boron nitride is a thermally and chemically resistant refractory compound composed mainly of boron and nitrogen elements. Its chemical formula is BN. Other common descriptions of Boron Nitride include Hexagonal boron nitride (H-BN) and hot-pressed boron nitride. Boron nitride exists in various crystalline forms, which are isoelectronic to a similarly structured carbon lattice. The most stable form of boron nitride is the hexagonal form that corresponds to graphite. It is also the softest form among BN polymorphs, so it is used as a lubricant and an additive to cosmetic products. The cubic (zincblende, also called sphalerite structure) variety that is analogous to diamond is called c-BN. Cubic boron nitride (c-BN) is softer than diamond, but it has superior thermal and chemical stability. The wurtzite BN form is rare but similar to lonsdaleite. It is slightly softer than the cubic form. Further Reading: Boron Nitride Overview: Properties, Production, and Uses
What is Boron Nitride Crucible ?
Boron nitride crucible is a chemical compound containing equal amounts of nitrogen and boron nitride. Because hexagonal boron nitride (H-BN) crucible is very soft, it is often used as a lubricant and an additive to cosmetic products. It is an excellent self-lubricate ceramic capable of withstanding high temperatures and maintaining its lubricating capability in a high vacuum environment. H-BN has similar mechanical properties as graphite, but it has excellent electrical resistance.