Characterization of oxides of stainless steel UNS S30400 formed in offshore environment

被引：7

作者：

Cindra Fonseca, M. ^{[2
]}

Bastos, I. N. ^{[3
]}

Baggio-Saitovitch, E. ^{[1
]}

Sanchez, D. R. ^{[4
]}

机构：

[1] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, RJ, Brazil

[2] Univ Fed Fluminense, PGMEC Programa Posgrad Engn Mecan, BR-24210240 Niteroi, RJ, Brazil

[3] Inst Politecn UERJ, BR-28630050 Nova Friburgo, RJ, Brazil

[4] Univ Fed Fluminense, Inst Fis, BR-24210346 Niteroi, RJ, Brazil

来源：

CORROSION SCIENCE | 2012年 / 55卷

关键词：

Stainless steel; Mossbauer spectroscopy; Oxidation; MOSSBAUER-SPECTROSCOPY; CORROSION-RESISTANCE; TEMPERATURE; DOPANT; FEOOH;

D O I：

10.1016/j.corsci.2011.09.029

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thick corrosion products of austenitic stainless steel obtained from a steam turbine structure exposed in offshore environment were studied by optical stereomicroscopy, X-ray diffraction, Mossbauer and energy-dispersive X-ray spectroscopy. The external surface of mechanical structure was exposed to a marine atmosphere and the internal one to a combustion gas for two decades. Characterization of corrosion products showed high content of akaganeite in the outer region and a mixture of akaganeite and hematite in the inner surface. Besides these characteristics, a distribution of nanosized superparamagnetic particles of akaganeite was found in the rusts. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：34 / 39

页数：6

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