An X-ray diffraction study of corrosion products from low carbon steel

被引：0

作者：

Morales, A.L. ^{[1
,2
]}

机构：

[1] Instituto de Física, Universidad de Antioquia

[2] Grp. de Corros. y Protección, Depto. de Ing. de Materiales, Universidad de Antioquia

来源：

Revista de Metalurgia (Madrid) | 2003年 / SPEC.VOLUME期

关键词：

Corrosion rate; Mössbauer spectroscopy; Steel; Sulfate and chloride ions; X-ray diffraction;

D O I：

10.3989/revmetalm.2003.v39.iextra.1092

中图分类号：

学科分类号：

摘要：

It was found in earlier work a decrease in the corrosion rate from low carbon steel when it was subjected to the action of a combined pollutant concentration (SO42- = 10-4 M + Cl- = 1.5 × 10-3 M). It was also found that large magnetite content of the rust was related to higher corrosion rates. In the present study corrosion products are further analyzed by means of X-ray diffraction to account for composition changes during the corrosion process. It is found that lepidocrocite and goethite are the dominant components for the short-term corrosion in all batches considered while for log-term corrosion lepidocrite and goethite dominates if the corrosion rate is low and magnetite dominates if the corrosion rate is high. The mechanism for decreasing the corrosion rate is related to the inhibition of magnetite production at this particular concentration.

引用

页码：28 / 31

页数：3

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