Pyrolytic Boron Nitride (PBN) is a...
Pyrolytic Boron Nitride (PBN) is a kind of advanced ceramic, can be produced with 99.999% purity in high density. It made by ammonia and Boron halide through Chemical Vapor deposition(CVD) process in high temperature and high vacuum condition: NH3 +BX3=BN+3HX, it can be produced as PBN plates, and also can be produced as PBN final products directly like crucible, boat, coating, etc.
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In High temperature, high vacuum, and High purity environment, PBN is usually used as coating material to protect the graphite. PBN coating can avoid the graphite heating unit to volatilize in high temperature.
Parameter of PBN:
"a" 60 "c" 2
Metal Impurity Content