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Título : Copper corrosion mechanism in the presence of formic acid vapor for short exposure times
Autor : Bastidas Rull, José María, López-Delgado, Aurora, Cano Díaz, Emilio, Polo, J. L., López Gómez, Félix Antonio
Palabras clave : Cooper corrosion
Formic acid vapor
Gravimetric method
Fecha de publicación : 2000
Editor: Electrochemical Society
Resumen: The rate of copper corrosion originated by the action of formic acid vapors at 100% relative humidity was studied. Five formic vapor concentration levels (10, 50, 100, 200, and 300 ppm) were used. A copper corrosion rate of up to 1300 mg/m2 d was measured for a period of 21 days using a gravimetric method. The patina layers were characterized using cathodic reduction, X-ray powder diffraction, Fourier transform infrared spectrometry, and scanning electron microscopy techniques. Some of the components identified in the corrosion-product layers were cuprite (Cu2O), cupric hydroxide hydrate [Cu(OH)2·H2O], and copper formate hydrate [Cu(HCOO)2·4H2O]. The latter was formed by both cupric hydroxide and formic acid-cuprous ion complex mechanisms.
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ISSN: 0013-4651
DOI: 10.1149/1.1393303
Citación : Journal Electrochemical Society 147 (3) : 999-1005 (2000)
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