Boron Nitride Properties

Boron nitride is a crystal made up of nitrogen atoms and boron atoms. The crystal structure is split into hexagonal boron nitride (HBN), closely stuffed hexagonal boron nitride (WBN) and cubic boron nitride.

The crystal framework of hexagonal boron nitride has a comparable graphite split framework, revealing a loose, lubricating, moisture-absorbing, light and also other homes of white powder, so it is additionally called "white graphite". Theoretical density 2.27 g/cm3, particular gravity: 2.43, Mohr hardness = 2.
Hexagonal boron nitride has good electric insulation, thermal conductivity, chemical stability, no obvious melting point, 3000 ℃ in 0.1 MPA nitrogen, heat resistance to 2000 ℃ in neutral decrease ambience, 2800 ℃ in nitrogen and argon, inadequate stability in oxygen ambience, as well as temperature level listed below 1000 ℃. The development coefficient of hexagonal boron nitride amounts that of quartz, but its thermal conductivity is 10 times that of quartz.
Hexagonal boron nitride does not dissolve cold water. When the water is steamed, it hydrolyses really gradually and also creates a small amount of boric acid and also ammonia, which does not react with weak acid and solid base at area temperature level. It is a little soluble in warm acid and also can only be decomposed with liquified salt hydroxide and potassium hydroxide.

Boron Nitride Residences
1. High heat resistance: sublimation at 3000 ℃, its toughness at 1800 ℃ is twice that at area temperature level, air-cooled at 1500 ℃ to area temperature for dozens of times, and also does not soften at 2800 ℃ in inert gas.
2. High thermal conductivity: the hot-pressed items coincide as pure iron, and 33W/M. K has the highest thermal conductivity among ceramic materials over 530C.
3, reduced thermal development coefficient: the expansion coefficient of 2 × & times; 10-6 is 2nd just to quartz glass, which is the smallest in porcelains, combined with its high thermal conductivity, so the thermal shock resistance is excellent.
4. Superb electrical residential or commercial properties: great insulation at high temperature, 1014 Ω& Omega;- centimeters,2000 at 25 ℃ and 103 Ω& Omega;- centimeters at 25 ℃. It is the most effective heat insulating material in ceramics, with malfunction voltage 3KV/MV, reduced dielectric loss 108HZ 2.5 × & times; 10-4, dielectric continuous 4, transparent to microwave as well as infrared.
5. Great deterioration resistance: it does not react with general steels (iron, copper, aluminum, lead, etc), unusual planet metals, precious metals, semiconductor products (germanium, silicon, potassium arsenide), glass, molten salts (crystal, fluoride, slag), inorganic acid and alkali.
6. Reduced friction coefficient: U is 0.16, does not increase at high temperature, is extra immune to high temperature than molybdenum disulfide and graphite, oxidation ambience can be used up to 900C, vacuum cleaner can be utilized at 2000 ℃.
7. High purity good B is high: its pollutant content is much less than 10PPM, however B material is greater than 43.6%.
8. Machinability: its firmness is Morse 2, so it can be refined into get rid of high accuracy by basic machining methods.

What is hexagonal boron nitride made use of in?
Hexagonal boron nitride can be made use of in the manufacture of TiB2/BN composite ceramics, progressed refractories and superhard materials, splitting up rings of horizontal constant rolling steel, heat immune lubricating substances and high temperature coatings, in addition to basic materials for the synthesis of cubic boron nitride.

Specific usages:
1. Boron nitride is a mold launch agent for metal forming and a lubricating substance for steel cord drawing.
2. Special electrolysis as well as resistance products of boron nitride at heat.
3. Boron nitride is suitable for high temperature strong lubes, extrusion antiwear ingredients, ceramic composite additives, refractories and also antioxidant ingredients, especially for molten steel Faustian occasions, heat enhancement ingredients and high temperature immune insulation materials.
4. Boron nitride is suitable for heat-sealed desiccant of transistor and also additive of polymer such as plastic material.
5. Boron nitride items pushed right into various shapes can be used as heat, high stress, insulation as well as warmth dissipation components.
6. Boron nitride is a thermal protecting material in aerospace.
7. With the engagement of driver, cubic boron nitride can be changed into cubic boron nitride as tough as ruby by high temperature as well as high stress therapy.
8. Boron nitride is the structural product of atomic activator.
9. Boron nitride appropriates for the nozzles of airplane as well as rocket engines.
10. Boron nitride is an insulator of high voltage, high frequency electrical power as well as plasma arc.
11. Boron nitride is a product packaging material to stop neutron radiation.
12. The superhard product made from boron nitride can be made into high-speed cutting devices and drills for geological exploration and oil exploration.
13. Boron nitride is made use of in metallurgy for splitting up ring of continuous spreading steel, circulation groove of amorphous iron, demoulding representative of continual casting aluminum (numerous optical glass stripping agents).
14. Boron nitride is an evaporator for all sort of capacitor film plating, picture tube plating, display plating.
15. Boron nitride appropriates for all sort of fresh-keeping aluminized bags and so on.
16. Boron nitride is a variety of laser anti-counterfeiting light weight aluminum plating, trademark gilding materials, all type of cigarette tags, beer labels, product packaging boxes, cigarette boxes.
17. Boron nitride is suitable for cosmetics. Can be utilized for lipstick fillers, safe and also lubricating, yet additionally shiny.

Boron Nitride Cost
The rate is affected by many variables consisting of the supply and need in the marketplace, sector trends, economic activity, market sentiment, and unforeseen occasions.
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Boron Nitride Supplier
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