腐蚀
氧化物
材料科学
图层(电子)
合金
X射线光电子能谱
冶金
高温腐蚀
透射电子显微镜
化学工程
复合材料
纳米技术
工程类
作者
Jae Young Park,Nong‐Moon Hwang,Bosung Seo,Hyeon-Tae Im,Ki Beom Park,Ki Beom Park,Chang-Soo Park,Chan Bin Mo,Hyung-Ki Park,Kwangsuk Park,Kwangsuk Park
标识
DOI:10.1002/srin.202200236
摘要
Corrosion properties of the insulating oxide layer formed on the Fe–Si–Cr alloy through the selective oxidation heat treatment are evaluated to find out that the oxide layer can play a role as a barrier layer against corrosion. Preferential oxidation of Si and Cr during the selective oxidation heat treatment results in a two‐layered oxide layer. From the X‐ray photoelectron spectroscopy and transmission electron microscope results, it is revealed that the inner layer is SiO 2 and the outer layer is Cr 2 O 3 , and they keep growing with the heat treatment time. The oxide layer formed by the selective oxidation heat treatment causes the ennoblement of the corrosion potential, but additional ennoblement does not occur with the growth of the oxide layer. However, the thickness of the oxide layer influences anti‐corrosion performance in terms of corrosion resistance and deterioration. The thicker the oxide layer is, the higher the corrosion resistance and the slower the deterioration become so that the protection property withstands for 3 h in the 3.5 wt% NaCl solution when the oxide layer has 44.3 nm thickness.
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