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Potentiodynamic Polarization Studies and Surface Chemical Composition of Bismuth Titanate (Bi(x)Ti(y)O(z)) Films Produced through Radiofrequency Magnetron Sputtering
The applications of Bismuth Titanate (Bi(x)Ti(y)O(z)) materials have been focused on their electronic and optical properties, but with respect to the use of these compounds in applications like corrosion resistance, have been very few or nonexistent. For this reason, in the present investigation Bi(...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5452846/ https://www.ncbi.nlm.nih.gov/pubmed/28788338 http://dx.doi.org/10.3390/ma6104441 |
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author | Alfonso, José E. Olaya, Jhon J. Pinzón, Manuel J. Marco, José F. |
author_facet | Alfonso, José E. Olaya, Jhon J. Pinzón, Manuel J. Marco, José F. |
author_sort | Alfonso, José E. |
collection | PubMed |
description | The applications of Bismuth Titanate (Bi(x)Ti(y)O(z)) materials have been focused on their electronic and optical properties, but with respect to the use of these compounds in applications like corrosion resistance, have been very few or nonexistent. For this reason, in the present investigation Bi(x)Ti(y)O(z) thin films were deposited using RF magnetron sputtering onto silicon wafers, stainless steel 316L, and titanium alloy (Ti(6)Al(4)V) substrates, in order to carry out a study of the corrosion behavior of this compound. The structural properties of the coatings were studied through X-ray diffraction (XRD), the morphology was determined using Scanning Electron Microscopy (SEM), the corrosion resistance behavior of the coated and uncoated substrates was evaluated via the Potentiodynamic Polarization technique, and surface chemical composition was evaluated through X-ray photoelectron spectroscopy (XPS). The XRD results indicated that the films were amorphous. The SEM micrographs showed that the deposited films were homogeneous, but in some cases there were cracks. The potentiodynamic polarization technique showed that the corrosion current in the coated substrates decreased by an order of two magnitudes with respect to the uncoated substrates, but in both cases the corrosion mechanism was pitting due to the pores in the film. The XPS analysis shows that the deposited films contain both Bi(3+) and Ti(4+). |
format | Online Article Text |
id | pubmed-5452846 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-54528462017-07-28 Potentiodynamic Polarization Studies and Surface Chemical Composition of Bismuth Titanate (Bi(x)Ti(y)O(z)) Films Produced through Radiofrequency Magnetron Sputtering Alfonso, José E. Olaya, Jhon J. Pinzón, Manuel J. Marco, José F. Materials (Basel) Article The applications of Bismuth Titanate (Bi(x)Ti(y)O(z)) materials have been focused on their electronic and optical properties, but with respect to the use of these compounds in applications like corrosion resistance, have been very few or nonexistent. For this reason, in the present investigation Bi(x)Ti(y)O(z) thin films were deposited using RF magnetron sputtering onto silicon wafers, stainless steel 316L, and titanium alloy (Ti(6)Al(4)V) substrates, in order to carry out a study of the corrosion behavior of this compound. The structural properties of the coatings were studied through X-ray diffraction (XRD), the morphology was determined using Scanning Electron Microscopy (SEM), the corrosion resistance behavior of the coated and uncoated substrates was evaluated via the Potentiodynamic Polarization technique, and surface chemical composition was evaluated through X-ray photoelectron spectroscopy (XPS). The XRD results indicated that the films were amorphous. The SEM micrographs showed that the deposited films were homogeneous, but in some cases there were cracks. The potentiodynamic polarization technique showed that the corrosion current in the coated substrates decreased by an order of two magnitudes with respect to the uncoated substrates, but in both cases the corrosion mechanism was pitting due to the pores in the film. The XPS analysis shows that the deposited films contain both Bi(3+) and Ti(4+). MDPI 2013-10-08 /pmc/articles/PMC5452846/ /pubmed/28788338 http://dx.doi.org/10.3390/ma6104441 Text en © 2013 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/). |
spellingShingle | Article Alfonso, José E. Olaya, Jhon J. Pinzón, Manuel J. Marco, José F. Potentiodynamic Polarization Studies and Surface Chemical Composition of Bismuth Titanate (Bi(x)Ti(y)O(z)) Films Produced through Radiofrequency Magnetron Sputtering |
title | Potentiodynamic Polarization Studies and Surface Chemical Composition of Bismuth Titanate (Bi(x)Ti(y)O(z)) Films Produced through Radiofrequency Magnetron Sputtering |
title_full | Potentiodynamic Polarization Studies and Surface Chemical Composition of Bismuth Titanate (Bi(x)Ti(y)O(z)) Films Produced through Radiofrequency Magnetron Sputtering |
title_fullStr | Potentiodynamic Polarization Studies and Surface Chemical Composition of Bismuth Titanate (Bi(x)Ti(y)O(z)) Films Produced through Radiofrequency Magnetron Sputtering |
title_full_unstemmed | Potentiodynamic Polarization Studies and Surface Chemical Composition of Bismuth Titanate (Bi(x)Ti(y)O(z)) Films Produced through Radiofrequency Magnetron Sputtering |
title_short | Potentiodynamic Polarization Studies and Surface Chemical Composition of Bismuth Titanate (Bi(x)Ti(y)O(z)) Films Produced through Radiofrequency Magnetron Sputtering |
title_sort | potentiodynamic polarization studies and surface chemical composition of bismuth titanate (bi(x)ti(y)o(z)) films produced through radiofrequency magnetron sputtering |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5452846/ https://www.ncbi.nlm.nih.gov/pubmed/28788338 http://dx.doi.org/10.3390/ma6104441 |
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