Kinetics of copper and cadmium cementation by zinc powder.
dc.contributor.author | Oliveira, Víctor de Andrade Alvarenga | |
dc.contributor.author | Penna, José Márcio Soares | |
dc.contributor.author | Magalhães, Lucas Sanches | |
dc.contributor.author | Leão, Versiane Albis | |
dc.contributor.author | Santos, Claudio Gouvea dos | |
dc.date.accessioned | 2020-09-08T21:37:02Z | |
dc.date.available | 2020-09-08T21:37:02Z | |
dc.date.issued | 2019 | |
dc.description.abstract | The cementation of copper and cadmium by zinc powder was investigated in order to assess the influence of different parameters in the process. The results showed that the process follows a first order reaction with two stages in both systems. In the system Cu/Zn, the second stage is faster than the first while in the system Cd/Zn the second stage is slower than the first. In the system Cu/Zn, the variation on the surface area of copper cement followed a power law and a straight line was obtained by plotting –ln([Cu2+]/[Cu2+] 0 ) against t3/2, the activation energy was calculated as 16.3kJ. In the system Zn/Cd the surface area available for reaction decreased as a result of the cement agglomeration. On the experiments carried out with ions Cu2+ and Cd2+ in solution, purer copper cement was obtained when the experiments were carried out in the presence of less than stoichiometric amount of zinc powder and longer reaction times. | pt_BR |
dc.identifier.citation | OLIVEIRA, V. de A. A. et al. Kinetics of copper and cadmium cementation by zinc powder. Tecnologia em Metalurgia, Materiais e Mineração, São Paulo, v. 16, n. 2, p. 255-262, abr./jun. 2019. Disponível em: <https://tecnologiammm.com.br/doi/10.4322/2176-1523.20191661>. Acesso em: 10 mar. 2020. | pt_BR |
dc.identifier.doi | http://dx.doi.org/10.4322/2176-1523.20191661 | pt_BR |
dc.identifier.issn | 2176-1523 | |
dc.identifier.uri | http://www.repositorio.ufop.br/handle/123456789/12709 | |
dc.language.iso | en_US | pt_BR |
dc.rights | aberto | pt_BR |
dc.rights.license | This is an open access paper, published under the Creative Commons CC BY-NC-ND license (Attribution-NonCommercial-NoDerivs) - https://creativecommons.org/licenses/ by-nc-nd/4.0/. Fonte: o próprio artigo. | pt_BR |
dc.title | Kinetics of copper and cadmium cementation by zinc powder. | pt_BR |
dc.type | Artigo publicado em periodico | pt_BR |
Arquivos
Pacote Original
1 - 1 de 1
Nenhuma Miniatura disponível
- Nome:
- ARTIGO_KineticsCopperCadmium.pdf
- Tamanho:
- 1.77 MB
- Formato:
- Adobe Portable Document Format
Licença do Pacote
1 - 1 de 1
Nenhuma Miniatura disponível
- Nome:
- license.txt
- Tamanho:
- 924 B
- Formato:
- Item-specific license agreed upon to submission
- Descrição: