Influence of temperature on the oxidation behaviour of a ferritic-martensitic steel in supercritical water
Influence of temperature on the oxidation behaviour of a ferritic-martensitic steel in supercritical water
复制标题
温度对铁素体-马氏体钢在超临界水中氧化行为的影响
DOI:
10.1016/j.corsci.2016.10.020
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发表时间:
2016-12
影响因子:
8.3
通讯作者:
Zhang Naigiang
中科院分区:
文献类型:
--
作者:
Zhu Zhongliang;Xu Hong;Jiang Dongfang;Mao Xueping;Zhang Naigiang
The oxidation behaviour of a ferritic-martensitic steel exposed to deaerated supercritical water at 560–650 °C and 25 MPa was investigated. A double-layered oxide formed on all samples, consisting of an Fe-rich outer magnetite layer and a Cr-rich inner oxide layer. The temperature had a strong influence on the oxidation rate and morphology of the oxide films. The oxidation kinetics showed nearly parabolic behaviour. The calculated activation energy indicated that the oxidation rate-controlling step was the outward diffusion of Fe2+and Fe3+ions through the spinel lattice. The mechanism behind the temperature dependence of the oxidation is further discussed.
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