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Coal-fired power plants using the Oxyfuel process are being developed to produce electricity with zero CO2\udemission. Steels used in this and other processes are often exposed to different atmospheres in each side of the material,\udespecially in heat exchangers and solid oxide fuel cells. Some studies have shown that steels exposed to different hydrogen\udpartial pressures in each side have a different corrosion behavior from steels exposed to a single atmosphere condition.\udIn this investigation, two experimental steels were studied at 600°C and 1 atm in dual atmospheres containing water\udvapor in one side and flue gas in the other and they were compared to steels oxidized in single atmospheres. The gas\udcomposition used is similar to the ones found in Oxyfuel coal power plants, where there is a great concentration of CO2, and also H2O and SO2. Analyses were made using SEM and TEM

CORROSÃO DE AÇOS A 600°C EM CONDIÇÕES SIMPLES E DUPLA UTILIZANDO ATMOSFERAS OXYFUEL