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Boron nitride (non-oxide ceramic) (properties (high thermal conductivity,…
Boron nitride (non-oxide ceramic)
processing
nitridation / ammonalysis of boron oxide at high temp
direct nitridation of boron
properties
high thermal conductivity
low thermal expansion
good thermal shock resistance
high electrical resistance
non-toxic
easily machined
chemically inert
raw material
boron trioxide
ammonia
nitrogen gas
boron trichloride
application
machine cutting tools and abrasives
wear resistant coatings
electrical insulators
moulds and evapourating boats