Boron Nitride Properties

Boron nitride is a crystal made up of nitrogen atoms and boron atoms. The crystal framework is separated right into hexagonal boron nitride (HBN), very closely packed hexagonal boron nitride (WBN) as well as cubic boron nitride.

The crystal structure of hexagonal boron nitride has a similar graphite split framework, revealing a loosened, lubricating, moisture-absorbing, light and also other properties of white powder, so it is likewise called "white graphite". Theoretical thickness 2.27 g/cm3, certain gravity: 2.43, Mohr firmness = 2.
Hexagonal boron nitride has good electrical insulation, thermal conductivity, chemical stability, no apparent melting point, 3000 ℃ in 0.1 MPA nitrogen, heat resistance to 2000 ℃ in neutral reduction ambience, 2800 ℃ in nitrogen and argon, inadequate security in oxygen environment, and also temperature below 1000 ℃. The growth coefficient of hexagonal boron nitride amounts that of quartz, however its thermal conductivity is ten times that of quartz.
Hexagonal boron nitride does not liquify chilly water. When the water is steamed, it hydrolyses really slowly as well as generates a small amount of boric acid and also ammonia, which does not react with weak acid and strong base at space temperature. It is a little soluble in hot acid and can just be disintegrated with molten sodium hydroxide and also potassium hydroxide.

Boron Nitride Properties
1. High heat resistance: sublimation at 3000 ℃, its strength at 1800 ℃ is two times that at room temperature, air-cooled at 1500 ℃ to space temperature level for lots of times, and also 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 possible thermal conductivity among ceramic products over 530C.
3, low thermal development coefficient: the growth coefficient of 2 × & times; 10-6 is 2nd just to quartz glass, which is the smallest in porcelains, paired with its high thermal conductivity, so the thermal shock resistance is great.
4. Exceptional electric buildings: great insulation at high temperature, 1014 Ω& Omega;- centimeters,2000 at 25 ℃ and also 103 Ω& Omega;- cm at 25 ℃. It is the best heat protecting product in ceramics, with failure voltage 3KV/MV, low dielectric loss 108HZ 2.5 × & times; 10-4, dielectric consistent 4, transparent to microwave and infrared.
5. Great corrosion resistance: it does not respond with basic metals (iron, copper, aluminum, lead, etc), rare planet 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 boost at high temperature, is more resistant to heat than molybdenum disulfide and graphite, oxidation atmosphere can be used up to 900C, vacuum cleaner can be used at 2000 ℃.
7. High pureness good B is high: its pollutant content is much less than 10PPM, but B content is more than 43.6%.
8. Machinability: its solidity is Morse 2, so it can be refined into parts with high precision by general machining techniques.

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

Particular usages:
1. Boron nitride is a mold release representative for steel developing and also a lubricating substance for steel cable illustration.
2. Unique electrolysis and also resistance materials of boron nitride at high temperature.
3. Boron nitride is suitable for heat strong lubricating substances, extrusion antiwear additives, ceramic composite additives, refractories and also antioxidant ingredients, specifically for liquified steel Faustian occasions, warm improvement additives and high temperature resistant insulation products.
4. Boron nitride is suitable for heat-sealed desiccant of transistor and additive of polymer such as plastic material.
5. Boron nitride items pressed into numerous forms can be utilized as high temperature, high stress, insulation and also warmth dissipation parts.
6. Boron nitride is a thermal securing product in aerospace.
7. With the participation of catalyst, cubic boron nitride can be transformed into cubic boron nitride as hard as diamond by high temperature as well as high pressure treatment.
8. Boron nitride is the architectural material of atomic reactor.
9. Boron nitride is suitable for the nozzles of airplane and rocket engines.
10. Boron nitride is an insulator of high voltage, high frequency electrical power and also 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 tools and drills for geological expedition as well as oil drilling.
13. Boron nitride is utilized in metallurgy for separation ring of continual spreading steel, flow groove of amorphous iron, demoulding representative of constant casting light weight aluminum (various optical glass removing agents).
14. Boron nitride is an evaporator for all kinds of capacitor film plating, image tube plating, display plating.
15. Boron nitride is suitable for all sort of fresh-keeping aluminized bags and so on.
16. Boron nitride is a selection of laser anti-counterfeiting light weight aluminum plating, hallmark gilding products, all type of cigarette tags, beer tags, product packaging boxes, cigarette boxes.
17. Boron nitride appropriates for cosmetics. Can be utilized for lipstick fillers, safe and also lubricating, however also shiny.

Boron Nitride Rate
The cost is influenced by many elements consisting of the supply and also demand in the marketplace, industry trends, financial activity, market sentiment, and also unforeseen events.
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Boron Nitride Supplier
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