MULTILAYER COATING Russian patent published in 2010 - IPC H01M8/02 H01M8/12 

FIELD: electricity.

SUBSTANCE: multilayer coating is intended for protection of metals and alloys against oxidation at high temperatures may be used as coating for application on connecting materials in hard-oxide electrolytic devices, including hard-oxide fuel elements (HOFE) and hard-oxide electrolytic cells (HOEC). Multilayer ceramic coating contains at least two layers, at the same time the first layer (3), contacting with metal-containing surface, contains oxide with structure of perovskite or fluorite, and the second layer (4) contains oxide with structure of spinel, mine salt, corundum or wurtzite, and contacts with environment. At the same time the specified first layer (3) is characterised by value of diffusion coefficient of marked cations M^m+ of alloy, and specified second layer (4) is characterised by value of diffusion coefficient of marked oxygen ions O^2-. Besides the first and/or second layer are electroconductive.

EFFECT: improved wear resistance and heat resistance of connection materials included in hard-oxide fuel elements in oxidation-recovery environment.

30 cl, 1 dwg, 12 ex