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Artigo Científico | Filmes Finos para fins Eletroeletrônicos | Português | 30/05/2002
Autores: A.J. B. Dutra, M. A. Getrouw
Palavras-chave: average roughness, cobre, copper, crescimento, growth, mecanismo, mechanism, nucleação, nucleation, rugosidade
Resumo: As etapas iniciais de nucleação e crescimento do cobre são particularmente importantes na qualidade de folhas finas (18 mm) de cobre, pois na produção das mesmas, um recobrimento rápido e homogêneo de toda a superfície do eletrodo torna-se fundamental para a obtenção de folhas íntegras, devido à curta duração da eletrólise, geralmente inferior a 3 minutos. Mecanismos de nucleação do cobre sobre titânio, baseados nos modelos propostos por Thirsk e Harrison em diferentes condições experimentais foram determinados com o auxílio de transientes de corrente obtidos potenciostaticamente. Neste trabalho, demonstrou-se que a rugosidade média das folhas finas de cobre eletrolítico é função não apenas do processo de crescimento, mas também do processo de nucleação.
Abstract: The initial steps of copper nucleation and growth are particularly important for the quality of thin (18 mm) copper foils, because during the manufactury of these foils, a quick and homogeneous covering of the entire surface of the electrode becomes fundamental in order to obtain foils, free of defects, as a result of the short duration of the electrolysis, generally less than 3 minutes. Mechanisms for copper nucleation on titanium, based on the Thirsk and Harrison methodology were determined under different experimental conditions were determined with the help of potentiostatic current transients. In this research, it was shown that the average roughness of the thin copper foils is not only a function of the growth process, but also of the nucleation process. homogeneous covering of the entire surface of the electrode becomes fundamental in order to obtain foils, free of defects, as a result of the short duration of the electrolysis, generally less than 3 minutes. Mechanisms for copper nucleation on titanium, based on the Thirsk and Harrison methodology were determined under different experimental conditions were determined with the help of potentiostatic current transients. In this research, it was shown that the average roughness of the thin
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