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Título: | Yttria stabilized zirconia corrosion destabilization followed by Raman mapping |
Autor: | Mayoral Gastón, María del Carmen CSIC ORCID ; Andrés Gimeno, José Manuel CSIC ORCID CVN ; Bona, María T. CSIC; Higuera, V.; Belzunce, F. J. | Palabras clave: | Yttria stabilized zirconia Tetragonal zirconia Hot corrosion |
Fecha de publicación: | 12-jun-2008 | Editor: | Elsevier BV | Citación: | Surface and Coatings Technology 202(21): 5210-5216 (2008) | Resumen: | The incidence of V2O5 corrosion on yttria stabilized zirconia (YSZ) thermal barrier coatings has been studied as a function of application methods and powder initial granulometry. Commercial fused-and-crushed 8 wt.% yttria-stabilized zirconia was sprayed by Atmospheric Plasma Spraying (APS) and High Frequency Pulse Detonation. Hollow Spherical Powder (HOSP™) with the same composition was sprayed by APS. The coatings where covered with V2O5 powder and treated at 1000 °C for different times. The extent of corrosion was followed by X-ray diffraction, scanning electron microscopy and Raman micro-spectrometry. A relationship between coating porosity and corrosion resistance is explored: the HOSP coating presented deeper penetration of corrosion than the other coatings. The authors present the extended capabilities of Raman semi-quantitative phase analysis to describe the depth and density of yttria leaching by vanadia leading to YSZ destabilization. | Versión del editor: | https://doi.org/10.1016/j.surfcoat.2008.06.050 | URI: | http://hdl.handle.net/10261/168175 | DOI: | 10.1016/j.surfcoat.2008.06.050 | ISSN: | 0257-8972 |
Aparece en las colecciones: | (ICB) Artículos |
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