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Hexagonal Boron Nitride - The Chemical Resistant Refactoring Compound

By Author: Ganesh Sawant
Total Articles: 15

Boron nitride being the exceptionally chemical resistant refactoring compound of boron and nitrogen exists in various crystalline forms. The structure of hexagon is stable and soft among all other BN or Boron nitride polymorphs. This boron nitride is potential of being used in nanotechnology and chemical stability is supreme.

High temperature equipments use boron nitrides for its thermal capacity and chemical stability. Thermo gravimetric analysis helped to detect the property of being used in high temperatures and the different characterization techniques helps to understand the structure, texture, surface chemistry and morphology.

Facts to know about Hexagonal Boron Nitride

The empirical formula BN corresponds to the cubic and hexagonal structure of carbon in the form of graphite and diamond respectively. The tetrahedral bond network is formed from the alternately linked boron and nitrogen atoms. It is huge covalent lattices of carbon with isoelectric. The boron cubes are too hard for a diamond to scratch it and because of its chemical inertness, hardness and temperature as high as 2973 degree C, it is used as a water resistant coating and abrasive.

Cubic Boron Nitride used for polishing with low carbon ferrous metals and shaping it.Can be used on iron, diamond and low carbon alloys without any risk of opposite reaction as it is chemically inert and Hexagonal Boron Nitride is white and slippery and have a layered structure and physically similar to graphite. It acts as a great insulator and chemically inert and does not react.

It melts under the pressure of 3000 degree C. Interlocking hexagonal rings are formed by nitrogen and boron atoms each hexagonal ring having 3 atoms of nitrogen and 3 of boron that lengths upto 0.145 nm and is not an alternate single double bond system.

The B-N-B or N-B-N bond angle is 120o as evident in graphite and is a perfect hexagonal ring bond. Like graphite or graphene layers, it has a 2D planar giant covalent network. Even the distance is similar like the inter-layer gap in graphite.It is not an electron deficient compound like semi conductors. Plastics filled with hexagonal boron nitride are seen to decrease the thermal expansion with an increased electrical insulation thermal conductivity, increased thermal conductivity and cause reduced wear to adjacent parts.

They stay stable in the air to ~1000oC while the materials based on carbon and graphite would have ignited for a longer period of time. Even the boron nanotubes are used for the sleeving of wire. Also used as catalyst support BN is also used as a lubricant. The soft and slippery nature makes it effective enough to be used in cosmetics.

Hello readers, this is Ganesh Sawant engaged in the chemical industry for a period of more than 25 years. I always prefer to get all my hexagonal boron nitride needs fulfilled from the platforms of MKNano.com for their high quality flawless materials.

Total Views: 87Word Count: 490See All articles From Author

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