Protective coating on stainless steel interconnect for SOFCs: oxidation kinetics and electrical properties

The findings point to several potential remedies for achieving coatings on 430SS that allow for metal interconnects with a service life of 50,000 h or more. When additionally taking the possibly unfavorable effects of electrodes contact geometries into account, such service life is unlikely to be possible above operating temperatures of about 700 °C, unless highly specialized alloys are used, with potential processing and cost penalties.