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Carbide Coatings on Metal Ribbons

Abstract

A means of solid-phase deposition is presented for producing carbide coatings on metal surfaces using thermally expanded graphite. Foils of niobium, Nb–2% Zr alloy, and alloys of titanium with Cr, Mo, and Al are the objects of deposition. Coatings form as a result of the solid-phase diffusion of carbon into metal foils when multiple sandwiches composed of metal foils alternating with thermally expanded graphite ribbons are heated and held under pressure. Microstructures of the cross-sections of ribbons with carbide coatings are investigated. Results are presented from high-temperature tests of the bending strength of layered composites made of niobium foils and titanium alloy foils with carbide coatings.

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Correspondence to V. P. Korzhov.

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Translated by I. Obrezanova

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Korzhov, V.P. Carbide Coatings on Metal Ribbons. Bull. Russ. Acad. Sci. Phys. 85, 798–802 (2021). https://doi.org/10.3103/S106287382107011X

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