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Nuohua¡¯s
CVD PBN
Zhejiang Nuohua Ceramic
Co., Ltd is specializing in manufacturing of Pyrolytic Boron Nitride
(PBN) via a Chemical Vapor Deposition (CVD) process. The material has
anisotropic properties due to its planar crystal structure. It exhibits
high thermal conductivity along its crystal planes (¡°a¡±
direction) and good thermal insulation through its crystal planes (¡°c¡±direction).
Known for its directional thermal conductivity and ability to provide
optimal "heat spreading," our PBN demonstrates improved temperature
uniformity. As a high-temperature ceramic, it exhibits a combination of
high electrical resistance and thermal conductivity, as thus it is an
excellent advanced material to consider for applications where superior
strength, low coefficient of thermal expansion, and thermal shock
resistance are required. Nonhazardous under normal conditions, nonporous
and exceptionally pure, our PBN can be deposited and then machined into
shapes for use as crucibles, boats, plates, tubes and bottles. Resistant
to thermal shock, it excels as a sealant and protects graphite from
corrosive atmospheres including most molten metals, acids and hot
ammonia environments. It also proves extremely effective as an
electrical insulator.
Key
features of Nuohua¡¯s PBN
l
Ultra-pure
99.995%
l
High
temperature stability (up to 18000C
in vacuum and 25000C
in
N2)
l
Spreading heat
along its planes while acting as an electrical insulator
l
Non-toxic and
non-wetting
l
Good flexural
strength
l
Chemically
inert to most gases, e.g. acids, alkalis, organic solvents, molten
metals and graphite
l
Excellent
thermal shock resistance
l
Oxidation
resistance
l
Negligible
out-gassing
l
High
dielectric strength
l
Tensile
strength increases with temperature |
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