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PBN Crucibles for Precision Application

Pyrolytic Boron Nitride Crucible can withstand high temperatures in a high vacuum environment. It has excellent thermal conductivity, corrosion resistance, and electrical resistance.

PBN0956 PBN Coated Graphite Products

Catalog No. PBN0956
Size <40cm (15")
Material PBN, Pyrolytic Boron Nitride
Purity 99.99% for PBN Coating
Surface Zero Porosity
Coating thickness 50~500μm

Datasheet

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PBN0956 PBN Coated Graphite Products

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PBN Coated Graphite Product Description

As PBN and graphite are machinable materials, we could offer custom manufacturing services and deliver all kinds of products based on graphite with PBN coating. These include trays, furnace components, heating elements, vaporizing pots, rods, bars, sheets, tubes, and more. Our experienced expertise is pleased to help locate the best solutions for your developing process.

Compared with normal boron nitride ceramic, pyrolytic boron nitride (PBN) has raw materials with much higher purity levels. PBN sheets, discs, and other pytolytic boron nitride products are synthesized on the mold by the chemical vapor deposition (CVD) process, with BCl3 and NH3.

BCl3 + NH3 ----> BN +3HCl

Pyrolytic boron nitride advanced ceramics exhibits high resistance to electricity but good thermal conductivity. It is a high-purity material with no porosity which could be deposited on all kinds of graphite shapes by chemical vapor deposition (CVD). Although Pyrolytic boron nitride could be deposited on various materials, it is usually used on graphite only, since the temperature of this CVD process is extremely high and the atmosphere is corrosive. PBN-coated graphite materials significantly enhanced the performance of the surface. Better purity, lower porosity, and roughness. PBN material could also stand high temperatures (2500 ℃). As coated products have great performance in high vacuum and high-temperature circumstances, they are ideal for applications in the semiconductor industry.

PBN Coated Graphite Product Specification

Item		value	Unit
lattice constant		a:2.504×10^-10 c:6.692×10^-10	μ m
density		2.0-2.19	g/cm³
resistivity		3.11×10¹¹	Ω·cm
tensile strength（ab）		153.86	N/mm²
bend strength	c	243.63	N/mm²
bend strength	ab	197.76	N/mm²
elastic modulus		235690	N/mm²
thermo conductivity		“a” direction “c” direction
	(200℃)	60 2.60	W/m·k
	(900℃)	43.70 2.80	W/m·k
dielectric strength（at room temperature）		56	KV/mm

PBN Coated Graphite Product Applications

Boron Nitride ceramic from Advanced Ceramic Materials can withstand high temperatures in high vacuum environments, plus it has excellent corrosion resistance and electrical resistance. Thus, Boron Nitride ceramic product is an ideal choice in a wide range of industries, such as:
- Crucibles for crystal growth
- Break rings for horizontal casting machine
- Insulators for high-temperature furnace
- Electric insulators in vacuum system
- Feed through for high voltage equipment

Packing Service

ACM’s PBN Coated Graphite Products are carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.