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Boron Nitride Properties

Boron nitride is a crystal composed of nitrogen atoms and also boron atoms. The crystal framework is split into hexagonal boron nitride (HBN), carefully stuffed 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 other homes of white powder, so it is additionally called "white graphite". Academic density 2.27 g/cm3, particular gravity: 2.43, Mohr hardness = 2.
Hexagonal boron nitride has great electrical 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 also argon, poor stability in oxygen atmosphere, as well as temperature level below 1000 ℃. The development coefficient of hexagonal boron nitride is equivalent to that of quartz, however its thermal conductivity is 10 times that of quartz.
Hexagonal boron nitride does not dissolve cold water. When the water is steamed, it hydrolyses very gradually and produces a percentage of boric acid and also ammonia, which does not react with weak acid and also solid base at space temperature level. It is somewhat soluble in warm acid and also can only be broken down with molten sodium hydroxide as well as potassium hydroxide.

Boron Nitride Qualities
1. High heat resistance: sublimation at 3000 ℃, its toughness at 1800 ℃ is two times that at area temperature level, air-cooled at 1500 ℃ to space temperature level for dozens of times, and 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 amongst ceramic products above 530C.
3, reduced thermal development coefficient: the expansion coefficient of 2 × & times; 10-6 is 2nd just to quartz glass, which is the tiniest in ceramics, coupled with its high thermal conductivity, so the thermal shock resistance is very good.
4. Exceptional electrical residential or commercial properties: good insulation at heat, 1014 Ω& Omega;- centimeters,2000 at 25 ℃ and also 103 Ω& Omega;- cm at 25 ℃. It is the best high temperature insulating material in ceramics, with failure voltage 3KV/MV, reduced dielectric loss 108HZ 2.5 × & times; 10-4, dielectric constant 4, clear to microwave and infrared.
5. Good rust resistance: it does not respond with basic steels (iron, copper, aluminum, lead, and so on), uncommon earth metals, rare-earth elements, semiconductor products (germanium, silicon, potassium arsenide), glass, liquified salts (crystal, fluoride, slag), inorganic acid and also antacid.
6. Low rubbing coefficient: U is 0.16, does not boost at heat, is much more resistant to high temperature than molybdenum disulfide and also graphite, oxidation atmosphere can be consumed to 900C, vacuum cleaner can be used at 2000 ℃.
7. High purity excellent B is high: its pollutant material is less than 10PPM, however B web content is more than 43.6%.
8. Machinability: its solidity is Morse 2, so it can be processed right into get rid of 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 ceramics, progressed refractories and superhard materials, splitting up rings of straight continual rolling steel, high temperature immune lubricating substances as well as heat finishes, along with basic materials for the synthesis of cubic boron nitride.

Details usages:
1. Boron nitride is a mold launch representative for metal developing as well as a lube for steel cable drawing.
2. Unique electrolysis and also resistance materials of boron nitride at heat.
3. Boron nitride appropriates for heat solid lubricating substances, extrusion antiwear additives, ceramic composite additives, refractories and also antioxidant ingredients, specifically for liquified steel Faustian celebrations, warm enhancement additives and high temperature immune insulation materials.
4. Boron nitride appropriates for heat-sealed desiccant of transistor and also additive of polymer such as plastic material.
5. Boron nitride products pushed right into numerous shapes can be made use of as heat, high stress, insulation and also warm dissipation elements.
6. Boron nitride is a thermal securing product in aerospace.
7. With the involvement of driver, cubic boron nitride can be changed into cubic boron nitride as hard as diamond by heat as well as high stress treatment.
8. Boron nitride is the structural material of atomic reactor.
9. Boron nitride appropriates for the nozzles of aircraft 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 packaging material to stop neutron radiation.
12. The superhard material made from boron nitride can be made right into high-speed cutting tools and also drills for geological exploration and also oil boring.
13. Boron nitride is used in metallurgy for splitting up ring of continual casting steel, circulation groove of amorphous iron, demoulding agent of continuous casting light weight aluminum (various optical glass stripping representatives).
14. Boron nitride is an evaporator for all kinds of capacitor film plating, image tube plating, show plating.
15. Boron nitride appropriates for all type of fresh-keeping aluminized bags and more.
16. Boron nitride is a selection of laser anti-counterfeiting light weight aluminum plating, trademark gilding products, all type of cigarette tags, beer tags, packaging boxes, cigarette boxes.
17. Boron nitride appropriates for cosmetics. Can be used for lipstick fillers, non-toxic and also lubricating, but additionally glossy.

Boron Nitride Price
The price is influenced by many elements consisting of the supply as well as demand in the market, industry patterns, financial task, market view, and unexpected events.
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Boron Nitride Supplier
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