Electrochemical systems such as SOFC, SOEC and OTM, operating in 600-1000°C temperature range, can effectively utilize alumina scale forming alloys and coatings for the construction of air handling system (heat exchanger, pipe, manifolds) to prevent or minimize chromium evaporation and related electrode poisoning. Experimental observations on chromium evaporation from alumina forming alloys (Haynes 214 and Carpenter AFA 25) in humidified air (3%H₂O) indicate reduction in chromium evaporation when compared to chromia forming alloys (RA602). Pretreatment under controlled oxidation conditions to allow for the formation of predominantly alumina surface scale, on the other hand, significantly reduces chromium evaporation. Mechanism for reduction in chromium evaporation from the alloy surface is presented. Oxide morphology and chemistry developed during surface pretreatment are also presented.