Abstract
Atmospheric Products Microstructure of Grade 3 and Grade 45 Steel Metal Corrosion
Kulash K. Syrmanova 1,2, Zhanat B. Kaldybekova1, Moldir T. Suleimenova2, Yersultan T. Botashev1, Dilyarom A. Abzalova1 and Sholpan B. Baizhanova1
DOI : http://dx.doi.org/10.13005/ojc/330664
Abstract:
This study presents the results of the research devoted to the determination of atmospheric corrosion products of Grade 3 and 45 steel microstructures. By the method of electronic microscopy, a microstructure of internal layers rust after corrosion tests in atmospheric conditions was defined and described. It was found out that the rust has a relatively loose and porous structure, the porosity decreases with increasing depth of the layer and exposure time; the rust layer formed on the underside of the steels is always more porous, roughened and loose than the top; alloying elements, for example, chromium stimulates the formation of a dense and durable layer of rust possessing protective properties. Carried out research allowed to develop the most effective methods of corrosion protection of oil and gas pipeline.
Keywords:corrosion; microstructure; rust; protection; layer; microscopy; porous structure; pipeline
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