期刊
MATERIALS CHARACTERIZATION
卷 118, 期 -, 页码 65-78出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.matchar.2016.04.027
关键词
Carbon steel; SEM; Morphology; Rust phases; Raman spectroscopy
类别
资金
- Ministry of Science and Innovation of Spain [CICYT-MAT2008-06649]
- CSIC JAE Programme
The scientific literature contains very little knowledge on the morphology of the different rust phases formed upon exposure of carbon steel to the atmosphere. In recent years this topic has attracted the attention of many researchers working on atmospheric corrosion, but the various morphologies seen in microscopic observations and reported in many publications lack a rigorous characterisation and identification in terms of the rust phases that give rise to them. The aim of this paper is to advance in this respect with a dual purpose: firstly to try to make a classification of the numerous different types of morphologies seen in the microscopic observation of rusts formed on carbon steel exposed to marine atmospheres, and secondly to identify some of these morphologies, perhaps the most common, using the powerful SEM/Micro-Raman spectroscopic technique. This work distinguishes several main types of morphology: globular, acicular, laminar, tubular and toroidal, and the variants existing within each group. The rust phases most commonly found are the oxyhydroxides lepidocrocite, goethite and akaganeite and the iron oxide magnetite. (C) 2016 Elsevier Inc. All rights reserved.
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