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Title: Cluster-assembled cubic zirconia films with tunable and stable nanoscale morphology against thermal annealing

Abstract

Nanostructured zirconium dioxide (zirconia) films are very promising for catalysis and biotechnological applications: a precise control of the interfacial properties of the material at different length scales and, in particular, at the nanoscale, is therefore necessary. Here, we present the characterization of cluster-assembled zirconia films produced by supersonic cluster beam deposition possessing cubic structure at room temperature and controlled nanoscale morphology. We characterized the effect of thermal annealing in reducing and oxidizing conditions on the crystalline structure, grain dimensions, and topography. We highlight the mechanisms of film growth and phase transitions, which determine the observed interfacial morphological properties and their resilience against thermal treatments.

Authors:
; ; ;  [1];  [1];  [2];  [3];  [4]
  1. CIMAINA and Dipartimento di Fisica, Università degli Studi di Milano, via Celoria 16, 20133 Milano (Italy)
  2. (SEMM), IFOM-IEO, Milano (Italy)
  3. Dipartimento di Scienze della Terra “Ardito Desio”, Università degli Studi di Milano, via Mangiagalli 32, 20133 Milano (Italy)
  4. Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS (United Kingdom)
Publication Date:
OSTI Identifier:
22597694
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 120; Journal Issue: 5; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANNEALING; BIOTECHNOLOGY; CATALYSIS; CLUSTER BEAMS; FILMS; LENGTH; MORPHOLOGY; NANOSTRUCTURES; PHASE TRANSFORMATIONS; TEMPERATURE RANGE 0273-0400 K; TOPOGRAPHY; ZIRCONIUM; ZIRCONIUM OXIDES

Citation Formats

Borghi, F., Lenardi, C., Podestà, A., Milani, P., E-mail: pmilani@mi.infn.it, Sogne, E., European School of Molecular Medicine, Merlini, M., and Ducati, C. Cluster-assembled cubic zirconia films with tunable and stable nanoscale morphology against thermal annealing. United States: N. p., 2016. Web. doi:10.1063/1.4960441.
Borghi, F., Lenardi, C., Podestà, A., Milani, P., E-mail: pmilani@mi.infn.it, Sogne, E., European School of Molecular Medicine, Merlini, M., & Ducati, C. Cluster-assembled cubic zirconia films with tunable and stable nanoscale morphology against thermal annealing. United States. doi:10.1063/1.4960441.
Borghi, F., Lenardi, C., Podestà, A., Milani, P., E-mail: pmilani@mi.infn.it, Sogne, E., European School of Molecular Medicine, Merlini, M., and Ducati, C. 2016. "Cluster-assembled cubic zirconia films with tunable and stable nanoscale morphology against thermal annealing". United States. doi:10.1063/1.4960441.
@article{osti_22597694,
title = {Cluster-assembled cubic zirconia films with tunable and stable nanoscale morphology against thermal annealing},
author = {Borghi, F. and Lenardi, C. and Podestà, A. and Milani, P., E-mail: pmilani@mi.infn.it and Sogne, E. and European School of Molecular Medicine and Merlini, M. and Ducati, C.},
abstractNote = {Nanostructured zirconium dioxide (zirconia) films are very promising for catalysis and biotechnological applications: a precise control of the interfacial properties of the material at different length scales and, in particular, at the nanoscale, is therefore necessary. Here, we present the characterization of cluster-assembled zirconia films produced by supersonic cluster beam deposition possessing cubic structure at room temperature and controlled nanoscale morphology. We characterized the effect of thermal annealing in reducing and oxidizing conditions on the crystalline structure, grain dimensions, and topography. We highlight the mechanisms of film growth and phase transitions, which determine the observed interfacial morphological properties and their resilience against thermal treatments.},
doi = {10.1063/1.4960441},
journal = {Journal of Applied Physics},
number = 5,
volume = 120,
place = {United States},
year = 2016,
month = 8
}
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  • Highlights: • Cubic zirconia sinters were investigated in three dimensions using dual-beam FEGSEM. • The 3D-EBSD technique was successfully applied to non-conductive ceramics. • New sample preparation approach to automated 3D-EBSD was proposed. • Grain boundary microstructures were reconstructed from inverse pole figure maps. • Pore microstructures were reconstructed from image quality maps. - Abstract: Three-dimensional electron backscatter diffraction technique was used for the visualization of grain boundary geometry and pore morphology in cubic zirconia. A set of four samples sintered under different conditions was investigated. Specimens which were characterized by energy dispersive spectroscopy and X-ray diffraction were entirely composedmore » of cubic phase. Investigations of boundaries and pore structures were carried out in a dual-beam scanning electron microscope. For each sample, a volume of 1000 μm{sup 3} was investigated. The analysis of grain boundary networks reconstructed from inverse pole figure maps revealed a strong dependence between grain boundary density and sample preparation parameters. Sintering also affects the size and distribution of pores. The total number of grains analyzed varied from 17 to 357 and the calculated volume of cavities from 0.01% to 21%. This paper shows the application of three-dimensional crystallographic orientation analysis to characterize the microstructure of yttria stabilized zirconia ceramics.« less