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Boron Nitride (BN) Blank

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Boron nitride (BN) blanks are often the raw material for other machined parts. Heeger Materials supplies our customers with high-quality hexagonal boron nitride blanks (BN blanks) at a competitive price. BN blanks are available from high-temperature-(1900C)-formed 99% pure composite boron nitride materials.

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Boron nitride blank consists of high purity BN ceramics. Boron Nitride, also known as BN, Hexagonal boron nitride (H-BN), and hot-pressed boron nitride, is a good self-lubricate ceramic that can bear high temperature and maintain its lubricating capability in a high vacuum environment. Hexagonal boron nitride (H-BN) behaves similarly with graphite mechanically but offers excellent electrical resistance. 

Boron Nitride Blank Advantages

  • Low wettability to molten metal
  • Relatively high thermal conductivity with low thermal expansion
  • Relatively high thermal shock resistance
  • Extremely high working temperature with proper inert gas protection (>3000C has been recorded)

Boron Nitride Blank Applications

Boron nitride (BN) blanks are often the raw material to make the other machined parts. It could also directly be used as insulators in some electronic or vacuum equipment with simple machining. 

High purity BN could bear higher temperatures in a vacuum than lower purity enhanced BN products. Although It's known that the maximum working temperature is 2500C, there’s a record to use our material at 3000+ C. Due to the low wettability with metals, boron nitride is an ideal material for metal melting works, especially for high purity material metal in a vacuum.

Boron nitride ceramic from Heeger Materials can withstand high temperatures in a high vacuum environment. Besides, it has excellent corrosion resistance and electrical resistance. Therefore, Boron Nitride ceramic product is an ideal choice in a wide range of industries, such as:

  • Crucibles for crystal growth
  • Evaporator Boats
  • Break rings for horizontal casting machine
  • Components for PVD, MOCVD, MBE system

Types of hexagonal boron nitride materials

  • Pyrolytic boron nitride PBN: 99.99% boron nitride
  • High purity boron nitride HPBN: >98.5% boron nitride + boron oxide
  • Calcium Borate Boron Nitride CABN: >97.5% Boron Nitride + Calcium Borate
  • Aluminum Nitride Boron Nitride ALBN: Boron Nitride + Aluminum Nitride + Boron Aluminum Oxide
  • Zirconia Boron Nitride ZRBN: Boron Nitride + Zirconia + Boron Oxide
  • Zirconium Aluminum Boron Nitride ZABN: Boron Nitride + Zirconia + Aluminum Nitride + Aluminum Boron Oxide
  • Silicon carbide boron nitride SCBN: boron nitride + silicon carbide + boron silicon oxide

Boron Nitride Blank Available Materials

Cat No.

Description

Availability

BN99

Hot pressed at high temperature (1900C).

Excellent corrosion resistance and thermal conductivity. Limited wear resistance

Self-bonded and high purity (>99%)

Machinable Blanks

Finished Parts

BNBO

General-purpose material

Bonded by boric oxide

Finished Parts

BNCB

Calcium borate bonded boron nitride

Enhanced moisture resistance

Finished Parts

BN60

BN 60%, SiO2 40%

Finished Parts

BN40

BN 40%, SiO2 60%

Finished Parts

ZSBN

BN-45%, Zr2O3 45%

Finished Parts

Targeted market

  • High-temperature furnace manufacturing
  • Ceramic manufacturing semiconductor
  • PVD coating
  • Microwave etc.

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