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首页> 外文期刊>Corrosion Engineering, Science and Technology >Characterisation of rust on microalloyed rail steel exposed to coastal location in India
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Characterisation of rust on microalloyed rail steel exposed to coastal location in India

机译：印度沿海地区暴露的微合金钢的锈蚀特征

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摘要

The rusts on the gauge face and non-gauge face of two rail steels (traditional C-Mn and novel Cu-Mo rail steel) were characterised after two years of service to correlate with an apparent visual observation of a lower corrosion rate in the case of the Cu-Mo rails. Rust samples were characterised by X-ray diffraction, Fourier transform infrared spectroscopy and Mossbauer spectroscopy. X-ray diffraction patterns showed diffuse peaks indicating poorly crystallised rust phases, while the phases identified by the other techniques were γ-FeOOH (lepidocrocite), α-FeOOH (goethite), Fe_(3-x)O_4 (magnetite), δ-FeOOH and α-Fe_2O_3 (haematite). The enhanced corrosion of the gauge face compared to non-gauge face for both rails and that of C-Mn rails compared to Cu-Mo rails was related to the higher amount of γ-FeOOH and lower amount of Fe_(3-x)O_4.
机译：在使用两年后，对两种钢轨（常规C-Mn和新型Cu-Mo钢轨）的轨距面和非规距面上的锈蚀进行了表征，以与在较低的腐蚀速率下进行明显的目视观察相关联。铜钼导轨。通过X射线衍射，傅里叶变换红外光谱和Mossbauer光谱对铁锈样品进行表征。 X射线衍射图显示出扩散峰，表明结晶相较差，而其他技术鉴定出的相为γ-FeOOH（锂铁云母），α-FeO​​OH（针铁矿），Fe_（3-x）O_4（磁铁矿），δ- FeOOH和α-Fe_2O_3（赤铁矿）。两种钢轨的轨距面与非规距面相比腐蚀增强，C-Mn钢轨与Cu-Mo钢轨相比，腐蚀增强与γ-FeOOH含量较高和Fe_（3-x）O_4含量较低有关。

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