کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1469716 | 990308 | 2011 | 9 صفحه PDF | دانلود رایگان |
This paper presents a study of AISI 1040 steel corrosion in aqueous electrolyte of acetic acid buffer containing 3.1 and 31 × 10−3 mol dm−3 of Na2S in both the presence and absence of 3.5 wt.% NaCl. This investigation of steel corrosion was carried out using potential polarization, and open-circuit and in situ optical microscopy. The morphological analysis and classification of types of surface corrosion damage by digital image processing reveals grain boundary corrosion and shows a non-uniform sulfide film growth, which occurs preferentially over pearlitic grains through successive formation and dissolution of the film.
► The use of in situ optical microscopy imaging is useful for the study of corrosion in situ.
► Is possible the observation of sequential images of corrosive processes, such as grain boundary corrosion.
► In situ images offer local information, revealing non-uniform changes on the surface during the corrosive process.
► Sulfide film formation was detected over pearlitic grains.
Journal: Corrosion Science - Volume 53, Issue 10, October 2011, Pages 3193–3201