Gradient Nanoporous Structures Based on Silicon Carbide and Boron Nitride in Self-Propagating High-Temperature Synthesis

† I.Uvarova,

I.P.Borovinskaya,

V.V.Zakorzhevskii,

I.G.Malevannaya

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Omeliana Pritsaka str.,3, Kyiv, 03142, Ukraine
Powder Metallurgy - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2010, #07/08
http://www.materials.kiev.ua/article/1604

Abstract

The paper investigates high-temperature corrosion-resistant strong nanoporous structures based on silicon carbide and boron nitride and effective membranes produced from them. The samples made of silicon carbide and boron nitride have the following characteristics: open porosity 40–48% and 38%; pore size 0.05 µm and 0.045 µm; bending strength 29 MPa and 19 MPa; and gas permeability 0.119 µm² and 0.0819 µm². Anisotropy is revealed in membranes. It permits using the membranes as gas diodes and a peculiar storage of gas molecules in the membrane (in particular, hydrogen molecules).

COMBUSTION, GRADIENT, INTERMETALLIC, MICROSTRUCTURE, MIXTURE, PARTICLE, POWDER, TEMPERATURE

Gradient Nanoporous Structures Based on Silicon Carbide and Boron Nitride in Self-Propagating High-Temperature Synthesis

† I.Uvarova, I.P.Borovinskaya, V.V.Zakorzhevskii, I.G.Malevannaya

Abstract

Publications

† I.Uvarova,

I.P.Borovinskaya,

V.V.Zakorzhevskii,

I.G.Malevannaya