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Ingeniería y Desarrollo
versão impressa ISSN 0122-3461versão On-line ISSN 2145-9371
Resumo
MARIN, Diana Milena; GOMEZ BOTERO, Maryory Astrid; MIRA, Rodolfo e ECHEVERRIA, Félix. Obtaining and evaluation of material films with electronic applications by means of accelerated tests of corrosion. Ing. Desarro. [online]. 2008, n.23, pp.59-71. ISSN 0122-3461.
The air of this study was to evaluate the corrosion behaviour of different materials employed in electronics. Thin films of Al, Cu, Ni an bilayer of Cu/Au were deposited by PVD on mica substrates. The coatings were exposed at accelerated corrosion test in chamber, using atmospheres containing NOx and SO2. The films were tested both connected and as individual parts. The total exposure time was weeks. Roughness and electrical resistance of the coatings across the exposure time and they were studied by optical microscopy, STM, SEM and EDS. The bilayer Cu/AU shows more stability compared with Cu according to the accelerated corrosion test. EDS analysis identified the presence of the corrosive aggressive species.
Palavras-chave : Corrosion; electronic devices; PVD; STM; accelerated tests; SEM; EDS; roughness; electrical resistance.