Spinel coatings

Coillard, V., Debeda, H., Lucat, C. and Menil, F. (2001) Nitrogen monoxide detection with a planar spinel coated amperometric sensor. Sens. Actuators B, 78, 113-18. 

Spinel-coated support (AI2O3 coated with MgAl204) and impregnated with Mg, Cr and Pt 704 C Mixtures of ethene and benzene 66 ... 

FIGURE 3.1.6 Photographs of element surface without plasma spinel coating (Zirconia ceramic surface is covered hy Pt thin film coating layer). 

Mixing and milling Calcination —> Mixing compounds Spray dry —> Formed particle (NOTA) coating- Heat treatment Spinel coating... 

Chou, Y.S., Stevenson, ).W., Xia, G.G., and Yang, Z.G. (2010) Electrical stability of a novel sealing glass with (Mn,Co)-spinel coated crofer22APU in a simulated SOFC dual environment./. Power Sources, 195, 5666-5673. 

T. Uehara, N. Yasuda, M. Okamoto, and Y. Baba, Effect of Mn-Co Spinel Coating for Fe-Cr Ferritic alloys ZMG232L, and 232J3 for Solid Oxide Fuel Cell Interconnects on Oxidation Behavior and Cr-Evaporation, J. Power Sources, 196, 7251-56(2011)... 

Z. Yang, G. Xia, C. Wang, Z. Nie, J. Templeton, J. Stevenson, and P. Singh, Investigation of AISl 441 Ferritic Stainless Steel and Development of Spinel Coatings for SOFC Interconnect Applications, PNNL Report 17568, (2008). 

Kaluza, L., Orel, B., Drazic, G., and Kohl, M. (2001) Sol-gel derived CuCoMnOx spinel coatings for solar absorbers structural and optical properties. Sol. Energy Mater. Sol C, 70,187-201. 

As seen in Chap. 6, the interaction of seal glass with metallic interconnect is much more severe due to chromate formations. The current chapter is a continuation of Chap. 6, which focuses on the chemical compatibiUly of glass/glass-ceramic seals with the mixed alkaline earth glasses. In addition, the spinel-coated interconnects and their interaction with glasses have been discussed. 

The polarisation part contributes mainly to the impedance part The ohmic resistances increased a few milliohms within the first 500 h and then remained almost constant. The conductivity of Cr203 is almost 10 -10 " S/cm at 800°C and by the end of the stack degradation test, the Cr scale is almost 5 pm. For an interconnect plate of area 25 cm and oxide scale 5 pm thick, an increase in ohmic resistance up to 10-100 mfl could be expected. The cathode side of (Mn, Co) spinel-coated interconnect plate might contribute to the ohmic resistance. 

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