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January 01,1970
Boron Nitride Crucible for Vacuum Casting Molten Metals
Boron nitride exhibits a hexagonal structure and is sometimes known as white graphite, due to its lubricity, anisotropic properties, heat resistance, and high thermal conductivity. This latter property, combined with low thermal expansion, leads to excellent resistance to thermal shock. All three forms, hot pressed, pyrolytic and hot isostatic pressed, can be used at very