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Sn(1−x)LaxO2 thin films deposited on AISI 304 stainless steel substrates

2014; Elsevier BV; Volume: 40; Issue: 8 Linguagem: Inglês

10.1016/j.ceramint.2014.04.084

1873-3956

Paulo Roberto Garcês Gonçalves, José Hilton Gomes Rangel, Marcelo Moizinho Oliveira, Adeílton Pereira Maciel, E. Longo,

Electronic and Structural Properties of Oxides

To minimize the corrosive processes that affect metal structures, this work involved the synthesis of Sn(1−x)LaxO2 ceramic thin film deposited on AISI 304 steel. The polymeric precursor method was used here to obtain resin precursors of Sn(1−x)LaxO2 films with x=1, 3 and 5 mol%. The films were deposited using dip-coating and spin-coating techniques to ensure better packing, and were then heat-treated in a muffle furnace at temperatures of 400, 450 and 500 °C for two hours. The SnO2 samples and the organic precursors were morphologically and structurally characterized by X-ray diffraction (XRD), thermogravimetric and differential thermal analysis (TG–DTA), Raman spectroscopy, atomic force microscopy (AFM) and scanning electron microscopy (SEM). These characterizations revealed crack-free, single-phase, dense thin films with good adhesion to the metal substrate in the entire temperature range employed in this study.