Author:
Parra Johanna,Piamba Oscar,Olaya Jhon,Alfonso José Edgar
Abstract
In this paper, we present the results obtained in surface chemical analysis, morphological characterization and evaluation of tribological properties of coatings of amorphous bismuth titanate (BixTiyOz) deposited on substrates made of 316L stainless steel using rf sputtering technique. The chemical elemental analysis was performed using Auger electron spectroscopy (AES), the morphology of the coatings was determined by atomic force microscopy (AFM). Measures of friction coefficient and wear rate were obtained by ball on disc test. EEA analyses allowed to establish that the first 10 nm of the coatings are comprised probably of Bi4Ti3O12 and Ti2O3, AFM measurements indicate that the coatings have an average roughness of 22.28nm and grain size of 50nm. Finally, the tribological tests established that the coefficient of friction and wear rate of the coated steel has similar values to the bare steel.
Publisher
Universidad Nacional de Colombia
Reference12 articles.
1. Processing dependences of microstructure of ferroelectric thin films;He;Journal Recent Patents on Materials Science,2008
2. Recubrimientos de nitruros metálicos depositados con UBM: Tecnología eficiente y ambientalmente limpia;Olaya;DYNA,2010
3. Unbalanced magnetron sputtering system for producing corrosion resistance multilayer coatings;Marulanda;DYNA,2012
4. Surface analysis of bismuth titanate by Auger and X-ray photoelectron spectroscopy
5. Ferroelectric properties of epitaxial Bi4Ti3O12 films deposited on epitaxial (100) Ir and (100) Pt films on Si by sputtering