Hexagonal boron nitride powder and method for producing the same
AssigneeTokuyama Corporation
InventorsShota Daiki, Yuuki Hirozane
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Abstract
The present invention provides a hexagonal boron nitride powder that has a highly reduced content of magnetic foreign bodies and is excellent in electrical insulation, and a production method capable of producing the hexagonal boron nitride powder at low cost. The hexagonal boron nitride powder includes single particles and/or aggregated particles of hexagonal boron nitride and has a total content of Co, Cr, Cu, Fe, Mg, Mn, Ni, Ti, Zn, and Al of not more than 20 ppm. The method for producing the hexagonal boron nitride powder with a reduced content of magnetic foreign bodies includes a plurality of specific steps.
Claims3
A hexagonal boron nitride powder comprising single particles and/or aggregated particles of hexagonal boron nitride and having a total elemental content of Co, Cr, Cu, Fe, Mg, Mn, Ni, Ti, Zn, and Al of not more than 20 ppm, of which not more than 3.6 ppm is the Fe.
Dependencies are inferred from the claim text.