Hexagonal Boron Nitride Powder

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Product details

Boron Nitride Usage and Function.

Boron nitride is a high-temperature material with properties of high temperature resistance, corrosion resistance, wear resistance and thermal conductivity. Boron nitride can be used in the manufacture of high-temperature resistant crucibles, drills and high-speed cutting tools. In addition, boron nitride can also be used as metal processing grinding materials, with low processing surface temperature and less defects on the surface of the parts.

Boron nitride fiber is an inorganic synthetic engineering material that can be widely used in the chemical industry, textile industry, aerospace technology and other cutting-edge industrial sectors. Boron nitride coating has the characteristics of high temperature resistance, non-adhesion, corrosion resistance, heat dissipation and thermal conductivity, etc. It can provide comprehensive protection for the surface of materials in direct contact with molten aluminum, magnesium, zinc alloys and their slag.

Uses of Boron Nitride.

Boron nitride has a variety of excellent properties, widely used in high-voltage high-frequency electricity and plasma arc insulators, automatic welding high-temperature resistant frame coating, high-frequency induction furnace materials, semiconductor solid-phase dopants, the structure of the atomic reactor materials, to prevent the neutron radiation of the packaging materials, radar transmission window, radar antennae dielectrics and rocket engine components, and so on.

Because of its excellent lubricating properties, it is used as a high-temperature lubricant and as a mold release agent for a variety of models. Molded boron nitride can be used to manufacture high temperature resistant crucibles and other products.

It can be used as super-hard material for drilling bits and high-speed cutting tools for geological exploration and oil drilling. It can also be used as metal processing grinding material, with low processing surface temperature and less defects on the surface of parts. Boron nitride can also be used as additives for various materials. Boron nitride processing made of boron nitride fiber, for the modulus of high-function fiber, is an inorganic synthetic engineering materials, can be widely used in the chemical industry, textile industry, aerospace technology and other cutting-edge industrial sectors.

Metal molding release agent and metal wire drawing lubricant; high temperature state of the special electrolytic, resistive materials; solid lubricants; transistor heat sealing desiccant and plastic resins and other polymers additives; pressed into a variety of shapes of boron nitride products, can be used to do high temperature, high pressure, insulation, heat dissipation parts; aerospace and aviation industry in the heat shielding materials; in the participation of the catalyst, the high temperature and high pressure can be transformed into a hard such as Cubic boron nitride can be transformed into hard as diamond by high temperature and high pressure treatment with the participation of catalyst.

Frequently Asked Questions for Industrial Users

1. What are the advantages of hBN over PTFE as a lubricant?

hBN has better thermal stability (>800°C vs. 260°C) and higher loading capacity.

2. can hBN be used in oxidizing environments?

hBN is stable in air up to 900°C; for higher temperatures, coatings or special grades are required.

3. What is the difference between hBN and cBN?

hBN is soft and lubricating (2 degrees on the Mohs scale); cBN is extremely hard (9.8 degrees on the Mohs scale, second only to diamond). 4.

4. Is your BN suitable for cosmetic use?

Yes, we offer cosmetic grade hBN with less than 1ppm of heavy metals.

5. What is the lead time for custom formulations?

Standard products are shipped within 3-5 days; custom R&D projects are shipped within 2-4 weeks.

Product method of Bulk Boron Nitride Powder.

Boron trichloride ammonia gas vapor deposition method will be made of boron trichloride and hydrogen together with the ammonia heated to a certain temperature is fully mixed, in the specified requirements of the reaction temperature in the reactor for the reaction, and then at a higher temperature, in the ammonia gas stream continue to heat for a certain period of time, to produce finished products of boron nitride.

Its BCl3 + 2NH3 → BN + 2HCl + NH4Cl Borax ammonium chloride method will be dewatered at 450 ℃ and pressure 79993Pa, ammonium chloride pre-drying at 110 ~ 120 ℃, respectively, crushed to 40 mesh fineness.

According to the anhydrous borax and ammonium chloride mass ratio of 1: 0.59 for the ingredients, mixed and pressurized molding.

Then, sent to the reaction furnace, and through the excess of ammonia, at 1050 ° C for the reaction, the generation of boron nitride crude crystals, after crushing, sieving, washing, filtration, drying, to produce boron nitride finished products.

Na2B4O7 + 2NH4Cl + 2NH3 → 4BN + 2NaCl + 7H2O cubic crystal boron nitride can be used as raw materials for hexagonal crystals, adding magnesium powder, lithium hydride powder additives to participate in the high-pressure, high-temperature reaction under the system.

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