A HIGH-PURITY POWDER OF HEXAGONAL BORON NITRIDE AND A METHOD FOR THE PREPARATION THEREOF

The invention provides a method for the preparation of an upgraded high-purity powder of hexagonal boron nitride still having low crystallinity to retain activity for sintering. The first method comprises the steps of admixing a crude powder of hexagonal boron nitride with a carbonaceous material an...

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Bibliographische Detailangaben

Hauptverfasser:	KOSHIDA, TAKAHISA RESEARCH LABORATORIES, KOITABASHI, TOSHIMITSU RESEARCH LABORATORIES, OGASAWARA, TAKESHI RESEARCH LABORATORIES, SASAKI, KIMIAKI KAWASAKI REFRACTORIES CO. LTD
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS COMPOUNDS THEREOF CONCRETE INORGANIC CHEMISTRY LIME, MAGNESIA METALLURGY NON-METALLIC ELEMENTS REFRACTORIES SLAG TREATMENT OF NATURAL STONE
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