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FORMATION OF ZIRCONIUM MONOXIDE GLOMERULI BY N2-LASER ABLATION

Materia

materiales

Título

FORMATION OF ZIRCONIUM MONOXIDE GLOMERULI BY N2-LASER ABLATION

Descripción

Zirconia is evermore in demand as a thermal barrier coatings (TBC) for energy economy and metal protection. Several methods are in use to produce the coatings, including sol-gel, CVD and PVD, however plasma ablation, has not been notoriously reported. The present work presents the use of a N2-SF6 pulsed laser beam, focused (6 J/cm2) on a metallic zirconium target in a reactor with low pressures of oxygen or helium. Sparks were observed in oxygen atmosphere, which denoted oxidation of laser ablated zirconium. The crystallographic structure and morphology of the obtained particles was studied by Transmission Electron Microscopy (TEM) and optical interferometric microscopy, identifying small agglomerates of ZrO (cubic phase). The pyrophorus oxidation phenomenon of ablated Zr droplets is described and interpreted by thermochemical simulations, and the deposited morphology is characterized

Identificador

ZrO, Zr, laser ablation

Fuente

Materials research innovations. 1998. Vol 2, pp. 97-102

Tipo

articulo cientifico en revista arbitrada

Autor

Thierry Poirier, Ricardo Castell, Joaquín Lira-Olivares

Fecha

2015

Formato

pdf

Idioma

inglés

Productor

Thierry Poirier, Ricardo Castell, Joaquín Lira-Olivares

Archivos

Citación

Thierry Poirier, Ricardo Castell, Joaquín Lira-Olivares, “FORMATION OF ZIRCONIUM MONOXIDE GLOMERULI BY N2-LASER ABLATION,” esopo.usb.ve, consulta 18 de noviembre de 2017, http://esopo.usb.ve/items/show/75.