TY - JOUR AU - Kim, MinJung PY - 2017/05/09 Y2 - 2024/03/29 TI - High-temperature Corrosion of T22 Steel in N2/H2S-mixed Gas JF - Advances in Technology Innovation JA - Adv. technol. innov. VL - 2 IS - 4 SE - Articles DO - UR - https://ojs.imeti.org/index.php/AITI/article/view/368 SP - 126-129 AB - ASTM T22 steel (Fe-2.25Cr-1Mo in wt.%) was corroded at 600 and 700 <sup>o</sup>C for 5-70 h under an atmospheric pressure that consisted of N<sub>2</sub>-(0.5. 2.5)%H<sub>2</sub>S-mixed gas. T22 steel corroded rapidly, forming outer FeS scales and inner (FeS, FeCr<sub>2</sub>O<sub>4</sub>)-mixed scale. The formation of the outer FeS scale facilitated the oxidation of Cr to FeCr<sub>2</sub>O<sub>4</sub> in the inner scales. Since the nonprotective FeS scale was present over the whole scale, T22 steel displayed poor corrosion resistance. ER -