添加Ti对Fe22Cr5Al3Mo合金在500℃过热蒸汽中腐蚀行为的影响

孙蓉蓉, 姚美意, 林晓冬, 张文怀, 仇云龙, 胡丽娟, 谢耀平, 杨健, 董建新, 成国光

Effect of Ti on the Corrosion Behavior of Fe22Cr5Al3Mo Alloy in 500oC Superheated Steam

SUN Rongrong, YAO Meiyi, LIN Xiaodong, ZHANG Wenhuai, QIU Yunlong, HU Lijuan, XIE Yaoping, YANG Jian, DONG Jianxin, CHENG Guoguang

图9 FeCrAl合金在500℃过热蒸汽中的腐蚀过程示意图

Fig.9 Schematics of corrosion process of FeCrAl alloys in 500oC and 10.3 MPa superheated steam (a) Fe2O3 is preferentially formed on the thin original mixed layer of oxides (b) the mixed oxide region of Cr and Al is formed (c) Cr2O3 formed at the interface between Fe2O3 and the mixed oxide region of Cr and Al, while the Al2O3 formed at the O/M interface (d) unoxidized Fe and Cr near O/M interface exist in the form of α-(Fe, Cr)