Boron Nitride Properties

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

The crystal structure of hexagonal boron nitride has a similar graphite layered framework, showing a loosened, lubricating, moisture-absorbing, light as well as other homes of white powder, so it is additionally called "white graphite". Theoretical thickness 2.27 g/cm3, particular gravity: 2.43, Mohr firmness = 2.
Hexagonal boron nitride has good electric insulation, thermal conductivity, chemical security, no apparent melting point, 3000 ℃ in 0.1 MPA nitrogen, warmth resistance to 2000 ℃ in neutral reduction atmosphere, 2800 ℃ in nitrogen and argon, poor stability in oxygen environment, and also temperature level below 1000 ℃. The development coefficient of hexagonal boron nitride amounts that of quartz, however its thermal conductivity is ten times that of quartz.
Hexagonal boron nitride does not dissolve chilly water. When the water is boiled, it hydrolyses extremely slowly and also creates a percentage of boric acid as well as ammonia, which does not respond with weak acid as well as strong base at area temperature. It is slightly soluble in hot acid as well as can just be broken down with liquified sodium hydroxide and also potassium hydroxide.

Boron Nitride Qualities
1. High warmth resistance: sublimation at 3000 ℃, its toughness at 1800 ℃ is two times that at room temperature level, air-cooled at 1500 ℃ to area temperature for lots of times, and also does not soften at 2800 ℃ in inert gas.
2. High thermal conductivity: the hot-pressed items are the same as pure iron, as well as 33W/M. K has the greatest thermal conductivity among ceramic products above 530C.
3, low thermal growth coefficient: the growth coefficient of 2 × & times; 10-6 is second just to quartz glass, which is the smallest in ceramics, coupled with its high thermal conductivity, so the thermal shock resistance is very good.
4. Excellent electrical properties: great insulation at heat, 1014 Ω& Omega;- centimeters,2000 at 25 ℃ and also 103 Ω& Omega;- centimeters at 25 ℃. It is the most effective heat protecting product in porcelains, with malfunction voltage 3KV/MV, low dielectric loss 108HZ 2.5 × & times; 10-4, dielectric continuous 4, transparent to microwave and infrared.
5. Excellent deterioration resistance: it does not respond with general metals (iron, copper, light weight aluminum, lead, etc), unusual earth metals, precious metals, semiconductor materials (germanium, silicon, potassium arsenide), glass, liquified salts (crystal, fluoride, slag), not natural acid and alkali.
6. Reduced friction coefficient: U is 0.16, does not raise at high temperature, is extra immune to high temperature than molybdenum disulfide and also graphite, oxidation atmosphere can be used up to 900C, vacuum cleaner can be made use of at 2000 ℃.
7. High pureness excellent B is high: its contamination content is less than 10PPM, yet B web content is more than 43.6%.
8. Machinability: its firmness is Morse 2, so it can be processed right into parts with high accuracy by general machining methods.

What is hexagonal boron nitride utilized in?
Hexagonal boron nitride can be used in the manufacture of TiB2/BN composite ceramics, advanced refractories as well as superhard products, splitting up rings of horizontal continuous rolling steel, heat resistant lubricating substances and high temperature coatings, along with resources for the synthesis of cubic boron nitride.

Details usages:
1. Boron nitride is a mold and mildew launch representative for metal forming and also a lubricating substance for metal cable drawing.
2. Special electrolysis and also resistance products of boron nitride at heat.
3. Boron nitride is suitable for high temperature solid lubes, extrusion antiwear ingredients, ceramic composite additives, refractories and antioxidant ingredients, specifically for liquified steel Faustian occasions, warmth improvement ingredients and heat immune insulation products.
4. Boron nitride is suitable for heat-sealed desiccant of transistor and additive of polymer such as plastic resin.
5. Boron nitride products pressed right into different forms can be used as heat, high stress, insulation and warmth dissipation components.
6. Boron nitride is a thermal protecting product in aerospace.
7. With the engagement of catalyst, cubic boron nitride can be changed right into cubic boron nitride as hard as diamond by heat as well as high pressure therapy.
8. Boron nitride is the architectural material of atomic activator.
9. Boron nitride is suitable for the nozzles of aircraft and also rocket engines.
10. Boron nitride is an insulator of high voltage, high frequency electricity and plasma arc.
11. Boron nitride is a packaging material to stop neutron radiation.
12. The superhard material made from boron nitride can be made into high-speed cutting devices and also drills for geological expedition and also oil drilling.
13. Boron nitride is utilized in metallurgy for splitting up ring of continual casting steel, circulation groove of amorphous iron, demoulding agent of continual spreading aluminum (various optical glass removing representatives).
14. Boron nitride is an evaporator for all kinds of capacitor movie plating, image tube plating, display plating.
15. Boron nitride appropriates for all type of fresh-keeping aluminized bags and so on.
16. Boron nitride is a variety of laser anti-counterfeiting aluminum plating, hallmark gilding products, all sort of cigarette labels, beer tags, product packaging boxes, cigarette boxes.
17. Boron nitride is suitable for cosmetics. Can be used for lipstick fillers, non-toxic as well as lubricating, but also shiny.

Boron Nitride Price
The rate is influenced by numerous aspects including the supply and also need out there, market fads, economic activity, market view, and unforeseen occasions.
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Boron Nitride Distributor
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