Open AccessCharacterization of Corrosion Products on Carbon Steel Exposed to Natural Weathering and to Accelerated Corrosion Tests
Author(s) -
Renato Altobelli Antunes,
Rodrigo Uchida Ichikawa,
L.G. Martinez,
Isolda Costa
Publication year - 2014
Publication title -
international journal of corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.312
H-Index - 18
eISSN - 1687-9333
pISSN - 1687-9325
DOI - 10.1155/2014/419570
Subject(s) - corrosion , lepidocrocite , weathering steel , materials science , goethite , metallurgy , carbon steel , scanning electron microscope , weathering , magnetite , composite material , chemistry , organic chemistry , adsorption , geomorphology , geology
The aim of this work was to compare the corrosion products formed on carbon steel plates submitted to atmospheric corrosion in urban and industrial atmospheres with those formed after accelerated corrosion tests. The corrosion products were characterized by X-ray diffraction, Mössbauer spectroscopy, and Raman spectroscopy. The specimens were exposed to natural weathering in both atmospheres for nine months. The morphologies of the corrosion products were evaluated using scanning electron microscopy. The main product found was lepidocrocite. Goethite and magnetite were also found on the corroded specimens but in lower concentrations. The results showed that the accelerated test based on the ASTM B117 procedure presented poor correlation with the atmospheric corrosion tests whereas an alternated fog/dry cycle combined with UV radiation exposure provided better correlation
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom