NO121088B

1,251,598. Abrasive composition. CARBORUNDUM CO. 28 Jan., 1969 [30 Jan., 1968], No. 4608/69. Heading C4V. [Also in Division C1] A raw batch for producing a composition suitable as an abrasive material consists of silicon, carbon, boron and nitrogen, the silicon and carbon being present in an amount...

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Bibliographische Detailangaben
Hauptverfasser:	DOW WHITNEY E, BARNUM SHAFFER P
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE DYES GRINDING LIME, MAGNESIA MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PERFORMING OPERATIONS POLISHES POLISHING REFRACTORIES SLAG TOOLS FOR GRINDING, BUFFING, OR SHARPENING TRANSPORTING TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	1,251,598. Abrasive composition. CARBORUNDUM CO. 28 Jan., 1969 [30 Jan., 1968], No. 4608/69. Heading C4V. [Also in Division C1] A raw batch for producing a composition suitable as an abrasive material consists of silicon, carbon, boron and nitrogen, the silicon and carbon being present in an amount corresponding to 10-80 mole per cent of silicon carbide and a boron being present in an amount corresponding to 80-10% of boron nitride. The nitrogen may be present in a gaseous form or combined as boron nitride. An abrasive is prepared by heating the raw batch at between 10 atmospheres and 7000 atmospheres and between 1300 C. and the decomposition temperature of silicon carbide in a non-oxidizing atmosphere.