Hexagonal Boron Nitride for CBN

Boron nitride is found to be an important III-V compound, which has excellent physical and chemical properties, such as wide band gap, high thermal conductivity, and excellent oxidation resistance. Boron nitride has great application prospects in high temperature, high frequency, high power, optoelectronics and radiation resistance, etc.

Therefore, the preparation of BN nanomaterials, the measurement of nanostructures, the assembly of nanodevices, BN toughened ceramics, and the testing of optical and electrical properties have become the important research directions in the field of BN nanomaterials today.

At present, many countries have successively invested a lot of money on boron nitride to carry out extensive and in-depth research, and has been in the BN crystal growth technology, optoelectronic device development, key device processes, BN integrated circuit manufacturing and other aspects of the important results, which for the military electronic systems and weapons and equipment to improve the performance of the electronic equipment as well as resistance to harsh environments provide a new type of components.

Boron nitride is a crystal composed of nitrogen and boron atoms. The chemical composition is 43.6% boron and 56.4% nitrogen, with four different variants: hexagonal boron nitride (HBN), rhombic boron nitride (RBN), cubic boron nitride (CBN), and wurtzite boron nitride (WBN). Nitrogen and boron atoms take different hybridization ways to interact with each other, can form different structures of boron nitride crystals. When nitrogen and boron atoms are hybridized in the SP2 mode, due to the bond angle of 120°, the bond forms a planar hexagonal mesh molecule similar to graphite, and this large planar mesh molecule adopts different spatial stacking modes, which can form different structures--hexagonal boron nitride (HBN) and rhombic nitride (RBN).

Boron nitride has many excellent properties: high heat resistance, high thermal conductivity, low coefficient of thermal expansion, thermal shock resistance, good high-temperature insulation (the best high-temperature insulating material in ceramics), good corrosion resistance, low coefficient of friction, machinability.

Industrial grade boron nitride powder is the most basic application mode of boron nitride powder. We can provide a variety of specifications according to customers' different requirements, covering the fields of industrial lubrication, industrial insulation, refractories and ceramic materials. Our boron nitride powder is synthesized through a first order reaction, and the purification process reduces the impurity content to a certain extent.

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