克罗米亚
材料科学
腐蚀
冶金
碳化物
合金
超临界流体
延展性(地球科学)
图层(电子)
高温腐蚀
无定形固体
复合材料
热力学
化学
有机化学
蠕动
物理
作者
Ho Jung Lee,Hyunmyung Kim,Sung Hwan Kim,Changheui Jang
标识
DOI:10.1016/j.corsci.2015.07.007
摘要
Corrosion and carburization behavior of chromia-forming heat resistant alloys in high-temperature supercritical-CO2 were investigated. For all alloys, a thin and continuous chromia (Cr2O3) layer was formed on the surface, while the existence of an amorphous carbon layer was identified at the chromia/matrix interface. Below the amorphous C layer, Cr-rich M23C6 carbides were extensively formed in Alloy 800HT but not in Alloy 600 or Alloy 690. The carburization resistance was dependent on whether the matrix is Fe-based or Ni-based. The existence of the carburized region with Cr-rich M23C6 carbides in Alloy 800HT contributed to additional loss of ductility.
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