Pressure assisted flash sintering of Mn-Co based spinel coatings for solid oxide electrolysis cells (SOECs)

Pressure assisted flash sintering was used to process Mn-Co-Cu based spinel coatings, electrophoretically deposited on a Crofer22APU interconnect. This method resulted in highly dense coatings, heat-treated for only a short duration ( 10 min) at temperatures lower than conventional sintering temperatures. The electrophoretically deposited coatings showed no delamination or cracks after flash sintering at high heating rates ( 200 C/ min). The high heating rate promoted Cu modified Mn-Co spinel and limited the formation of a Cr-oxide scale on the Crofer22APU substrate. Flash sintering was found to be a promising and time efficient sintering technique to overcome some of the issues related to low coating density and oxide scale formation in solid oxide electrolysis cell conditions.

Automated summary

Pressure assisted flash sintering was used to process Mn-Co-Cu based spinel coatings on a Crofer22APU interconnect, resulting in highly dense coatings heat-treated for a short duration at lower temperatures than conventional sintering. The electrophoretically deposited coatings showed no delamination or cracks after flash sintering at high heating rates (200 C/min), indicating the potential of flash sintering as a promising and time efficient technique to overcome issues related to low coating density and oxide scale formation in solid oxide electrolysis cell conditions.