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Surface characterization of a corroded bronze-leaded alloy in a salt spray cabinet
Authors:Joã  o Cura D&rsquo  Ars de Figueiredo Junior,Vanessa de Freitas Cunha Lins
Affiliation:a Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Brazil
b Departamento de Engenharia Química, Escola de Engenharia, Universidade Federal de Minas Gerais, Brazil
Abstract:The corrosion products of a TM 23 bronze-leaded alloy (Cu 72%, Pb 15%, Zn 8% and Sn 5%) were obtained in a salt spray cabinet after exposition during 120 h and 1000 h. The products obtained were studied using scanning electron microscopy, energy dispersive spectroscopy, and X-ray diffraction. The major products of bronze-leaded corrosion were oxides and basic salts of Cu, CuCl2·3Cu(OH)2, and Pb, Pb(OH)Cl. The results can be attributed to a kinetic control of the corrosion reactions.
Keywords:82.45.Bb
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