Development of New Ni-Al Porous Alloys for Metal-Supported Solid Oxide Fuel Cells

Abstract:

The technique of synthesis of Ni+16mass%Al open cell type porous intermetallic materials that can be treated in inert or regenerative atmospheres at temperature up to 1600 K without changing their functional properties has been developed. Materials with Ni₃Al + NiAl phase composition, porosity of 42 %, sizes of transport pores up to 10 μm, sizes of core elements equal to 40 μm, and specific surface of open porosity of 90 mm^-1 have been produced. It is demonstrated that after complete oxidation of the given materials, the NiO-NiAl₂O₄ composite is formed, whose reduction in hydrogen flux results in the formation of Ni-NiAl₂O₄ cermet; the shape of the porous material in the course of oxidation/reduction does not change.

• Periodical: Advanced Materials Research (Volume 1040)
• Pages: 19-23
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1040.19
• Online since: September 2014
• Authors: Alexander Kirdyashkin, V.D. Kitler, A.S. Maznoy*, A.A. Solov’ev, A.N. Kovalchuk, Igor V. Ionov
• Keywords: Combustion Synthesis, NiAl, Porous Material, Self-Propagating High-Temperature Synthesis (SHS), SOFC, Solid Oxide Fuel Cell

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