利用蒸汽氧化试验平台,模拟锅炉运行工况基本相似的高温蒸汽环境,对S31042奥氏体耐热钢进行了650和700℃蒸汽氧化试验.分析了氧化层的形貌、相组成和成分分布,结果表明,随着氧化时间的增长,氧化层厚度明显增加,分层现象明显,可分为内、外两层,外层为疏松多孔结构的富铁氧化物,内层为富铬氧化物；CrO2 (OH)2的挥发导致了外层富铁氧化物的形成,(Fe/Cr)3O4内层的形成能够有效减缓蒸汽氧化进程,进入稳态氧化阶段后氧化层厚度将基本保持不变.
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