Boron Nitride Powder Properties And Applications

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Boron nitride More than 100 years have passed since the invention of boron nitride. As a high-temperature grease, hexagonal boron was the first application. White graphite is a common name because of its similarity to graphite in terms of both its structure and properties.

Boron Nitride Powder Properties

Boron Nitride is resistant to corrosion by chemicals and mineral acids. It is also not affected by water and mineral acid. In concentrated hot alkali the boron and nitrogen bond is broken. Boron Nitride begins to oxidize at temperatures above 1200degC. It decomposes around 2700degC in vacuum. Boron Nitride is soluble only in warm acid, but insoluble in cold waters.

The majority of properties of boron materials are superior. The following properties are found in hexagonal boron Nitride: Low friction coefficient; good high temperature stability; good thermal shock resistance; high strength; high thermal conductivity.

Boron Nitride is a hexagonal system of crystals. The most common one is the graphite lattice. There are also amorphous variations.

Boron nitride Powder Applications

Cubic-boron nitride has excellent wear resistance and heat resistance. It can cut heat resistant steels, ferroalloys or hardened steels. At a relatively high temperature, it can cut Si-Al and Si-Cr alloys and chilled rolls with high hardness.

It is a semiconductor material with a large band gap (6.4 eV). Cubic-boron nitride exhibits high thermal conductivity, good resistivity, a low dielectric coefficient, enables dual-type doping, and has excellent electrical properties. They all share a wide band-gap, which makes them ideal for electronics that operate in extreme environments.

In comparison with SiC or GaN, diamond and cubic-boronnitride have superior properties. These include a wider band gap and greater mobility. Diamond and cBN are superior materials for extreme electronics.

Due to its high hardness, cubic-boron film is an excellent surface coating, particularly for window materials, such as zinc selenide or zinc sulfide.

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