Degradation of the surface of a metasilicate glass due to atmosphere moisture
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Data
1998-06-01
Autores
Ziemath, Ervino Carlos [UNESP]
Título da Revista
ISSN da Revista
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Editor
Sociedade Brasileira de Química
Resumo
Glasses with low silica content are very susceptible to suffer pronounced degradation when exposed to room atmosphere during short times. In this work the results of the degradation of the surface of a metasilicate glass with composition 2Na2O.1CaO.3SiO2 are presented. Optical and scanning electron microscopy observations, X-ray diffraction, infrared and Raman microprobe spectroscopic measurements of the modified surface of this glass show strong evidences that it is formed essentially by a crystalline carbonate layer.
Descrição
Palavras-chave
oxide glass, surface corrosion, vibrational spectroscopy
Como citar
Química Nova. Sociedade Brasileira de Química, v. 21, n. 3, p. 356-360, 1998.