Feasibility of RF Sputtering and PIIID for production of thin films from red mud

Feasibility of RF Sputtering and PIIID for production of thin films from red mud

Author Antunes, Maria Lúcia Pereira Google Scholar
Cruz, Nilson Cristino Da Google Scholar
Delgado, Adriana De Oliveira Google Scholar
Durrant, Steven Frederick Google Scholar
Bortoleto, José Roberto Ribeiro Google Scholar
Lima, Vivian Faria Google Scholar
Santana, Pericles Lopes Google Scholar
Caseli, Luciano Autor UNIFESP Google Scholar
Rangel, Elidiane Cipriano Google Scholar
Institution Universidade Estadual Paulista (UNESP)
Universidade Federal de São Carlos
Universidade Federal de São Paulo (UNIFESP)
Abstract During the extraction of aluminum from bauxite, a waste of oxides containing traces of heavy metals in a highly alkaline matrix, called Red Mud (RM), is produced. In this study RM is characterized and the feasibility of using it as a precursor for the production of thin films by Plasma Sputtering and by Plasma Immersion Ion Implantation and Deposition (PIIID) is demonstrated. The chemical structure and composition, surface morphology, topography, and wettability of the films prepared using such methodologies were investigated. The films consist mainly of the elements aluminum, silicon, iron and carbon. Infrared spectroscopic analyses reveal the presence of C=O, C-H2, Fe(OH), Al-O and Si-C functionalities. RF Sputtering produced films with smoother surfaces, whereas PIIID produced granular surface structures. Surface contact angle measurements showed that despite the presence of oxides and hydroxides, the films are hydrophobic, thus exhibiting an interesting link between the physical and thermodynamical properties.
Keywords red mud
thin films
plasma sputtering
Language English
Sponsor Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Date 2014-10-01
Published in Materials Research. ABM, ABC, ABPol, v. 17, n. 5, p. 1316-1323, 2014.
ISSN 1516-1439 (Sherpa/Romeo)
Publisher ABM, ABC, ABPol
Extent 1316-1323
Origin http://dx.doi.org/10.1590/1516-1439.290714
Access rights Open access Open Access
Type Article
SciELO ID S1516-14392014000500026 (statistics in SciELO)
URI http://repositorio.unifesp.br/handle/11600/8602

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