Oxidation-induced stoichiometric and morphological change of oxide films on stainless-steel surfaces
Oxidation-induced stoichiometric and morphological change of oxide films on stainless-steel surfaces
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氧化引起的不锈钢表面氧化膜的化学计量和形态变化
DOI：
10.1007/s003390051043
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
Sukmin Chung
中科院分区：
文献类型：
--
作者：
Boklae Cho;E. Choi;Sukmin Chung
用X射线光电子能谱和原子力显微镜观察了在氧分压为10 ~（-9）~ 10 ~（-4）Torr、温度为400-500 ℃范围内退火时，不锈钢表面氧化膜的化学计量和形貌的变化。随着温度的升高，Cr ~（2 p）~（3/2）结合能向更高的能量方向发生明显的移动，表明铬的氧化态发生了变化。发现在450 °C下，较低的氧分压有利于形成光滑的纯氧化铬。在低氧压下，形成的氧化物主要由氧化铬组成，其显示出明显光滑的表面，没有明显的晶粒，而在高压下，形成的氧化物主要由具有明显晶粒的氧化铁组成。
The oxidation-induced stoichiometric and morphological changes of the oxide film on a stainless-steel surface are observed by X-ray photoelectron spectroscopy and atomic force microscopy for annealing temperatures in the range 400–500 °C in oxygen partial pressures of 10-9to 10-4Torr With increasing the temperature, a significant shift occurs in the Cr 2p3/2binding energy towards higher energies, indicating a change in the oxidation state of chromium. It is found that at 450 °C lower oxygen partial pressures favor the formation of a smooth, pure chromium oxide. At a low oxygen pressure the oxide formed mainly consists of chromium oxide that shows a markedly smooth surface with no distinct grains, whereas at a high pressure the oxide formed mainly consists of iron oxide with distinct grains.