Boron Nitride Properties

Boron nitride is a crystal made up of nitrogen atoms and also boron atoms. The crystal structure is split into hexagonal boron nitride (HBN), very closely jam-packed hexagonal boron nitride (WBN) as well as cubic boron nitride.

The crystal framework of hexagonal boron nitride has a comparable graphite split structure, revealing a loose, lubricating, moisture-absorbing, light and also various other homes of white powder, so it is also called "white graphite". Academic density 2.27 g/cm3, certain gravity: 2.43, Mohr solidity = 2.
Hexagonal boron nitride has great electric insulation, thermal conductivity, chemical stability, no obvious melting factor, 3000 ℃ in 0.1 MPA nitrogen, warm resistance to 2000 ℃ in neutral decrease environment, 2800 ℃ in nitrogen and also argon, bad stability in oxygen environment, as well as temperature below 1000 ℃. The growth coefficient of hexagonal boron nitride amounts that of quartz, yet its thermal conductivity is ten times that of quartz.
Hexagonal boron nitride does not dissolve cold water. When the water is boiled, it hydrolyses very slowly and produces a percentage of boric acid as well as ammonia, which does not respond with weak acid and also strong base at area temperature level. It is a little soluble in warm acid and also can only be decomposed with liquified sodium hydroxide as well as potassium hydroxide.

Boron Nitride Properties
1. High heat resistance: sublimation at 3000 ℃, its toughness at 1800 ℃ is twice that at room temperature, air-cooled at 1500 ℃ to space temperature for dozens of times, and does not soften at 2800 ℃ in inert gas.
2. High thermal conductivity: the hot-pressed items are the same as pure iron, and 33W/M. K has the highest thermal conductivity among ceramic materials over 530C.
3, low thermal development coefficient: the development 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. Outstanding electric properties: good insulation at high temperature, 1014 Ω& Omega;- cm,2000 at 25 ℃ as well as 103 Ω& Omega;- centimeters at 25 ℃. It is the very best heat protecting product in ceramics, with malfunction voltage 3KV/MV, reduced dielectric loss 108HZ 2.5 × & times; 10-4, dielectric consistent 4, clear to microwave and also infrared.
5. Good rust resistance: it does not respond with general metals (iron, copper, light weight aluminum, lead, and so on), unusual planet metals, precious metals, semiconductor materials (germanium, silicon, potassium arsenide), glass, liquified salts (crystal, fluoride, slag), inorganic acid and also alkali.
6. Low friction coefficient: U is 0.16, does not enhance at high temperature, is much more resistant to high temperature than molybdenum disulfide as well as graphite, oxidation environment can be used up to 900C, vacuum can be utilized at 2000 ℃.
7. High purity good B is high: its contamination material is less than 10PPM, but B content is more than 43.6%.
8. Machinability: its firmness is Morse 2, so it can be refined right into parts with high precision by basic machining approaches.

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

Particular usages:
1. Boron nitride is a mold launch agent for steel developing and a lubricant for metal wire drawing.
2. Unique electrolysis and resistance products of boron nitride at heat.
3. Boron nitride is suitable for heat strong lubes, extrusion antiwear additives, ceramic composite additives, refractories and antioxidant ingredients, particularly for liquified metal Faustian occasions, warmth enhancement additives as well as heat resistant insulation materials.
4. Boron nitride appropriates for heat-sealed desiccant of transistor as well as additive of polymer such as plastic material.
5. Boron nitride products pressed right into various shapes can be used as heat, high pressure, insulation as well as warm dissipation components.
6. Boron nitride is a thermal shielding material in aerospace.
7. With the engagement of driver, cubic boron nitride can be changed right into cubic boron nitride as difficult as diamond by high temperature and high pressure treatment.
8. Boron nitride is the architectural material of atomic activator.
9. Boron nitride is suitable for the nozzles of aircraft as well as rocket engines.
10. Boron nitride is an insulator of high voltage, high regularity power and plasma arc.
11. Boron nitride is a product packaging product to prevent neutron radiation.
12. The superhard product made from boron nitride can be made right into high-speed cutting tools and drills for geological exploration as well as oil boring.
13. Boron nitride is utilized in metallurgy for splitting up ring of continuous spreading steel, circulation groove of amorphous iron, demoulding agent of continuous spreading light weight aluminum (numerous optical glass removing representatives).
14. Boron nitride is an evaporator for all kinds of capacitor movie plating, picture tube plating, show plating.
15. Boron nitride appropriates for all kinds of fresh-keeping aluminized bags and so on.
16. Boron nitride is a range of laser anti-counterfeiting light weight aluminum plating, trademark gilding products, all kinds of cigarette labels, beer tags, packaging boxes, cigarette boxes.
17. Boron nitride appropriates for cosmetics. Can be utilized for lipstick fillers, non-toxic and also lubricating, however also glossy.

Boron Nitride Cost
The cost is affected by many variables consisting of the supply as well as need on the market, market fads, economic task, market belief, and also unexpected events.
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Boron Nitride Provider
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