A Brief Guide To Hexagonal Boron Nitride

The use of hexagonal boron nitride has been quite widespread in many of the industry because of the various benefits it provides.

When the creation of two-dimensional materials is concerned Hexagonal boron nitride (h-BN) has become quite the popular choice due to its great optoelectrical properties. When these properties get amalgamated with thermal stability, mechanical robustness, and chemical inertness they make a sturdy candidate for 2D materials. In the scientific community alone, h-BN layers that are superthin in nature have received quite the attention. Its usage in photonics, nanoelectronics, anti-corrosion, biomedical, catalysis, and many more do not go undervalued.

The electrical, optical, mechanical, structural, and thermal properties of hexagonal boron nitride make it one of the top choices among many industries for making 2D materials. It’s used as a chemical exfoliant, physical vapour depositor, and other state-of-art combination mechanisms to make things a lot easier.

Understanding The Properties Of Boron Nitride

Hexagonal boron nitride is composed of structures that are hexagonal in nature and have the crystalline formation that many a time gets compared to graphite. h-BN comes either in cubic structure or in the form of a flat grid both of which are capable of resisting heat or any other chemical substances.

Thermal conductivity: The thermal conductivity of boron nitride remains at 1700 up to a whopping 2000W/mK that is often compared with graphene. The compound has a hexagonal lattice which is formed with carbon atoms.

Density: Depending on what form hexagonal boron nitride has, the density of this material ranges from either 2.1 up to 3.5 grams per cubic centimetres.

Chemical and heat resistance: The thermal enlargement coefficient is greater than that of a diamond and its melting point is at 2,973°C. Even when the ambient air is at 1000°C the hexagonal form does not decompose. When it comes to chemical resistance, boron nitride does not dissolve in any of the common acids out there.

Lubrication: Used in lubricating oils, boron nitride helps in boosting up the friction coefficient and also reducing the possibility of wear and tear.

Processing and Production Of Boron Nitride

Boron nitride goes through the process of synthesis which is a reaction to the boron trioxide or boric acid. These are generally referred to as the boron precursor that contains a nitrogen reagent (ammonia or urea) present within an atmosphere containing nitrogen. This reaction leads to boron nitride having an amorphous shape thereby having the traceable amount of impurities of boron trioxide. These impurities can be further cleansed through the process of evaporation after it is heated above a high temperature of 1500°C.

The adaptability of boron nitride makes it an interesting compound since it can have many polymorphs and forms that exist in the real world.

Author’s bio: This is Priya Arora from Uttarkhand. I am always interested in knowing about chemicals and nano powders, and I insist the readers to always buy stuff from reliable readers.

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