Boron Nitride Properties

Boron nitride is a crystal made up of nitrogen atoms and also boron atoms. The crystal framework is divided right into hexagonal boron nitride (HBN), closely jam-packed hexagonal boron nitride (WBN) and cubic boron nitride.

The crystal framework of hexagonal boron nitride has a comparable graphite layered structure, revealing a loose, lubricating, moisture-absorbing, light and also various other residential or commercial properties of white powder, so it is likewise called "white graphite". Theoretical thickness 2.27 g/cm3, particular gravity: 2.43, Mohr solidity = 2.
Hexagonal boron nitride has excellent electrical insulation, thermal conductivity, chemical stability, no obvious melting point, 3000 ℃ in 0.1 MPA nitrogen, heat resistance to 2000 ℃ in neutral reduction ambience, 2800 ℃ in nitrogen and argon, poor stability in oxygen environment, as well as temperature below 1000 ℃. The growth coefficient of hexagonal boron nitride is equivalent to that of quartz, yet its thermal conductivity is 10 times that of quartz.
Hexagonal boron nitride does not liquify cool water. When the water is steamed, it hydrolyses extremely slowly and also produces a percentage of boric acid and also ammonia, which does not respond with weak acid and also solid base at area temperature. It is slightly soluble in hot acid and also can just be decayed with liquified salt hydroxide and also potassium hydroxide.

Boron Nitride Characteristics
1. High warmth resistance: sublimation at 3000 ℃, its stamina at 1800 ℃ is two times that at space temperature level, air-cooled at 1500 ℃ to area temperature level for loads of times, as well as does not soften at 2800 ℃ in inert gas.
2. High thermal conductivity: the hot-pressed products coincide as pure iron, and also 33W/M. K has the highest thermal conductivity amongst ceramic materials over 530C.
3, reduced thermal expansion coefficient: the expansion coefficient of 2 × & times; 10-6 is second just to quartz glass, which is the tiniest in porcelains, combined with its high thermal conductivity, so the thermal shock resistance is excellent.
4. Exceptional electrical buildings: excellent insulation at high temperature, 1014 Ω& Omega;- centimeters,2000 at 25 ℃ as well as 103 Ω& Omega;- centimeters at 25 ℃. It is the very best high temperature insulating material in porcelains, with failure voltage 3KV/MV, low dielectric loss 108HZ 2.5 × & times; 10-4, dielectric constant 4, clear to microwave and also infrared.
5. Great deterioration resistance: it does not respond with basic steels (iron, copper, aluminum, lead, and so on), rare earth metals, precious metals, semiconductor products (germanium, silicon, potassium arsenide), glass, liquified salts (crystal, fluoride, slag), inorganic acid and alkali.
6. Low rubbing coefficient: U is 0.16, does not enhance at heat, is much more immune to heat than molybdenum disulfide as well as graphite, oxidation atmosphere can be consumed to 900C, vacuum cleaner can be made use of at 2000 ℃.
7. High purity great B is high: its contamination web content is much less than 10PPM, but B content is greater than 43.6%.
8. Machinability: its solidity is Morse 2, so it can be refined right into parts with high precision by general machining techniques.

What is hexagonal boron nitride used in?
Hexagonal boron nitride can be made use of in the manufacture of TiB2/BN composite ceramics, advanced refractories as well as superhard materials, separation rings of horizontal constant rolling steel, heat resistant lubricants and high temperature layers, as well as basic materials for the synthesis of cubic boron nitride.

Certain uses:
1. Boron nitride is a mold and mildew release representative for steel creating and also a lubricating substance for steel cable drawing.
2. Unique electrolysis as well as resistance materials of boron nitride at heat.
3. Boron nitride appropriates for heat strong lubes, extrusion antiwear ingredients, ceramic composite ingredients, refractories and antioxidant additives, especially for molten steel Faustian events, warmth improvement ingredients as well as high temperature resistant insulation materials.
4. Boron nitride appropriates for heat-sealed desiccant of transistor as well as additive of polymer such as plastic resin.
5. Boron nitride items pushed right into different shapes can be made use of as heat, high pressure, insulation as well as warm dissipation elements.
6. Boron nitride is a thermal shielding product in aerospace.
7. With the engagement of catalyst, cubic boron nitride can be changed into cubic boron nitride as hard as diamond by high temperature as well as high pressure treatment.
8. Boron nitride is the structural product of atomic activator.
9. Boron nitride appropriates for the nozzles of airplane and rocket engines.
10. Boron nitride is an insulator of high voltage, high regularity electrical power and also plasma arc.
11. Boron nitride is a packaging product to stop neutron radiation.
12. The superhard product made from boron nitride can be made right into high-speed cutting tools as well as drills for geological exploration and also oil drilling.
13. Boron nitride is made use of in metallurgy for separation ring of continual casting steel, flow groove of amorphous iron, demoulding representative of constant casting light weight aluminum (numerous optical glass stripping representatives).
14. Boron nitride is an evaporator for all type of capacitor movie plating, photo tube plating, present plating.
15. Boron nitride appropriates for all kinds of fresh-keeping aluminized bags and more.
16. Boron nitride is a variety of laser anti-counterfeiting aluminum plating, trademark gilding materials, all type of cigarette tags, beer tags, product packaging boxes, cigarette boxes.
17. Boron nitride is suitable for cosmetics. Can be used for lipstick fillers, safe and lubricating, yet additionally glossy.

Boron Nitride Rate
The price is affected by several variables including the supply and also need in the marketplace, sector fads, economic activity, market belief, as well as unexpected events.
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Boron Nitride Supplier
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