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DETERMINATION OF FREE BORON IN BORON CARBIDE, BORON NITRIDE AND ALLOYS ON THEIR BASIS

E.E. Kotlyar, T. N. Nazarchuk

Abstract

A method is developed for determining free boron in boron carbide and boron nitride. The method is based on free boron oxidation with a perhydrol and nitric acid, while boron, combined in carbide or nitride, is not oxidized. The determination of free boron ends in the titration with alkali in the presence of invert sugar. (auth)

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Key concepts: Boron, Boron nitride, Boron carbide, Materials science, Nitride, Carbide, Nitric acid, Titration