Feasibility of RF Sputtering and PIIID for Production of Thin Films from Red Mud

Autor(es)

Pereira Antunes, Maria Lucia ^[1] ; da Cruz, Nilson Cristino ^[1] ; Delgado, Adriana de Oliveira ^[2] ; Durrant, Steven Frederick ^[1] ; Ribeiro Bortoleto, Jose Roberto ^[1] ; Lima, Vivian Faria ^[1] ; Santana, Pericles Lopes ^[1] ; Caseli, Luciano ^[3] ; Rangel, Elidiane Cipriano ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista UNESP, BR-18087180 Sorocaba, SP - Brazil

^[2] Univ Fed Sao Carlos UFSCAR, BR-18052780 Sorocaba, SP - Brazil

^[3] Univ Fed Sao Paulo UNIFESP, BR-09972970 Diadema, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 17, n. 5, p. 1316-1323, SEP-OCT 2014.
• Citações Web of Science: 1

Resumo

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-H-2, 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. (AU)

• Processo FAPESP: 13/06210-7 - Utilização da lama vermelha para a deposição de filmes a plasma
• Beneficiário: Vivian Farias de Lima
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 12/14708-2 - Processos integrados de plasma para a delineação de padrões superhidrofóbicos na superfície da poliamida
• Beneficiário: Elidiane Cipriano Rangel da Cruz
• Modalidade de apoio: Auxílio à Pesquisa - Regular