• Product Details

Product description

Pyrolytic boron nitride is a kind of boron nitride prepared by chemical vapor deposition through high temperature pyrolysis reaction. When it comes to boron nitride, we must first talk about the two main structures of boron nitride: hexagonal and cubic. This is very similar to the two crystal forms of carbon: graphite and diamond. Hexagonal boron nitride and graphite are very similar in many respects, hence the name white graphite for hexagonal boron nitride. Pyrolytic boron nitride is hexagonal boron nitride, but strictly speaking, it has a certain amount of turbostratic structure. The main feature of PBN prepared by chemical vapor deposition is that its purity is very high, which can reach more than 99.99%.

Performance For Industrial Ceramic

Apparent Densityg/cm32.15-2.19
Gas permeability(He)cm3/s<1*10-10
Micro hardness(Knoop)N/mm2691.88(a-b plane)
Tensile strengthN/mm2153.86(parallel)
Bending strengthN/mm2243.63(parallel)197.76(parallel)
Modulus of elasticityN/mm2235690
Specific heat capacityCal/g.℃0.371(@ 200℃)0.442(@ 900℃)
Thermal conductivity 200℃W/cm.k0.6(parallel)0.026(perpendicular)
Thermal conductivity 900℃W/cm.k0.4370(parallel)0.028(perpendicular)
Dielectric Strength(RT)KV/mm56

Main properties of PBN ceramic

1. High purity (>99.99%)

2. High density (>2.12g/cm3)

3. No gas is released at high temperature

4. Uniform thickness, good heating consistency

5. Excellent thermal conductivity and thermal shock resistance

6. High interlayer strength, easy to clean and repeated use

7. Chemically inert, does not react with acids, alkalis, salts and organic solvents at high temperatures

Typical applications of PBN ceramic

 1.Crucibles for in-situ synthesis of GaAs, InP, GaP and other semiconductor single crystals.

  2. Crucibles and boats for the synthesis of single crystals or polycrystals of other III-V compounds.

  3. MBE crucible for molecular beam epitaxy.

  4. PBN/PG composite heater coating for annealing furnace.

  5. Insulation parts in high temperature vacuum furnace.

  6. Graphite heater insulation coating.

  7. High temperature insulated nozzle.

  8. MOCVD insulation board.

  9. Special-shaped crucible and special-shaped graphite parts coating.

  10. Crucible for special metallurgy

Our company

Liling Xing Tai Long Special Ceramic Co., Ltd was established in 1997, specializing in research and development, manufacturing high pure alumina ceramic product, BeO ceramic product, zirconia ceramic product, silicon carbide ceramic product, BN ceramic product and graphite ceramic product. Main as: alumina/zirconia tube, alumina/zirconia crucible, clay fire assay crucible, alumina/zirconia disc, alumina/zirconia substrate, alumina/zirconia part, textile ceramic, alumina/zirconia nozzle, alumina/zirconia ball and alumina/zirconia brick, silicon carbide/graphite/BN crucible, silicon carbide/Si3N4 ball, SiC plate/board, PBN/BN part, graphite part. Also accept OEM and ODM.

The products are widely used in lamps and lanterns, electric appliances, electric heating products, nozzle, auto parts, wear-resistant parts of insulation material, etc.

The  company always adhere to quality survival, innovation and development, the integrity of the brand, to protect and thoughtful after-sales service enterprises as the goal. Over the years, our products are sold well all over the country, and exported to Germany, United States, Finland, Brazil, Russia, Mexico...more than 20 countries, product quality and service are highly praised by customers.

“Superior quality, preferential price” is our management tenet. We sincerely expect to cooperate with the masses of domestic and foreign customers, common development!

Welcome to visit and investigate of our company.


Why us?

* Professional manufacturer since 1997.
* Strict quality control on production process and tolerance.
* Free samples available
* Customized production based on your drawing or specification
* On-time delivery and reliable support and service
* Inventory available for quick shipment
* We keep confidentiality of all the drawings and business information between us.

Are you a trading company or a manufacturer?    

* We are a manufaturer. 

Can you provide the free samples?

* Yes,we can offer free sample if we have it in stock,but the courier fee is to be collected.

Do you accept customized production based our specification?  

* Yes,we offer OEM and ODM service. Just send us your drawing if you have it. If you don’t have a drawing, just tell us your idea, we will work out the drawing for you.

What's the delivery time? 

* 7 working days for standard products 30 days for customized products.

If you have another questions,please feel free to contact us.

Liling Xing Tai Long Special Ceramic Co.,Ltd

Contact: Fanny

Tel: +86 13975373343


Email: admin@llxtl-china.com    


Company address: Shentan Industrial Zone, Liling, Hunan, 412200

Basic Information
  • Year Established
  • Business Type
  • Country / Region
  • Main Industry
  • Main Products
  • Enterprise Legal Person
  • Total Employees
  • Annual Output Value
  • Export Market
  • Cooperated Customers


Send your inquiry

Contact Us
Take advantage of our unrivaled knowledge and experience, we offer you the best customization service.

Leave A Message

The first thing we do is meeting with our clients and talk through their goals on a future project.
During this meeting, feel free to communicate your ideas and ask lots of questions.
They are all manufactured according to the strictest international standards. Our products have received favor from both domestic and foreign markets.
They are now widely exporting to 200 countries.

Send your inquiry

Choose a different language
Қазақ Тілі
bahasa Indonesia
Current language:English