Electrochemical chromium-based coatings

The most developed application of UDD is their use for strengthening composite electrochemical chromium-based coatings. Ultradisperse diamond is introduced into the standard chromium-plating electrolyte usually as suspension. The... 

Batawi E, Plas A, Straub W, Honneger K, Diethehn R (1999) New cost-effective craamic oxide phases used as protective coatings for chromium-based interconnects. In Singhal SC, Dokiya M (eds) Solid oxide fuel cells VI, PV 99-19. The Electrochem. Soc. hic., Pennington, pp 767-773... 

Besides corrosion issues of metal substrates, the use of alloys as mechanical supports of the cells is subject to interdiflfusion of iron, chromium, and nickel between ferritic steel and nickel-containing anodes during cells fabrication and operation. Diffusion of nickel into FSS substrates may cause austenitization of steels, which would result in TEC mismatch with other cell components. Diffusion of iron and chromium into Ni-based anodes may cause formation of oxide scales on nickel particles. This would result in fast degradation of cell performance during operation, as the electrochemically active surface is passivated. In order to overcome these issues, one possibility investigated by MS-SOFC developers is to use protective coatings [1-6, 13]. 

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