Refractory Core-Shell Powders for Additive Production

A. P. Garshin, S. P. Bogdanov

Abstract


The results of applying thin films on the surface of powders of refractory materials (diamonds, boron nitride, silicon carbide, tungsten carbide, metallic tungsten) by iodine transport are presented. The developed method makes it possible to obtain composite powder materials of the core-shell type, in which the coating thickness varies from 1 nm to several micrometers. Of the powders modified by metal films and their compounds, composite materials were obtained and their physicomechanical characteristics were studied, which turned out to be significantly higher in comparison with materials sintered from the same uncoated powders. The possible areas of use of the composites obtained are determined.

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References


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DOI: http://dx.doi.org/10.24892/RIJIE/20170207

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