摘要
321不锈钢管被用在热交换器中,当温度在约700℃时,钢管外表面氧化膜严重脱落。在热空气中进行了恒温氧化模拟试验,使用电子探针和X射线衍射仪等设备对钢管表面进行了研究,结果表明:不锈钢管中γ和α两相共存是氧化膜脱落的根本原因。
WTStainless steel 321 is used in a heat exchanger. The oxide layer on the steel tube scaled off at a service temperature of about 700℃. Oxidation experiment was carried out in a hot-air furnace. Electron probe microanalyser, X-ray diffractometer were employed to investigate the surface of specimens'. It is concluded that the coexistence of α and γ phases in the steel is responsible for the scaling of oxide layers.
出处
《机械工程材料》
CAS
CSCD
北大核心
2004年第2期51-54,共4页
Materials For Mechanical Engineering
