Corrosion of Copper and Lead by Formaldehyde, Formic and Acetic Acid Vapours
作者： Jean Tétreault , Emilio Cano , Maarten van Bommel , David Scott , Megan Dennis
DOI: 10.1179/SIC.2003.48.4.237
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摘要: AbstractThe formation of corrosion products and the sensitivity copper lead were studied under experimental conditions in which formaldehyde (methanal), formic (methanoic) acetic (ethanoic) acid concentration, relative humidity (RH) duration exposure varied. Levels offormic above 0.4 parts per million based on volume (ppmv) affect appearance at 75% RH, levels 4 ppmv gains weight both 54 RH. The main compound found was cuprite, copper(I) oxide. Lead has a higher to acid: as low 0.04 becomes darker, O.1 measurable In presence different mixed carbonyl vapours reacted mainly with acid. On other hand, reaction more complex. Acetic tends form thick white layer (composed plumbonacrite possibly acetate compounds) surf...
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