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Boletín de la Sociedad Española de Cerámica y Vidrio
Article . 2020 . Peer-reviewed
License: CC BY NC ND
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DIGITAL.CSIC
Article . 2020 . Peer-reviewed
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Opacificación de vidrio sonoro superior

Authors: Gil Puente, Cristina; Agua Martínez, Fernando; Villegas Broncano, María Ángeles;

Opacificación de vidrio sonoro superior

Abstract

Dado el interés histórico, artístico y tecnológico de las opalinas de la Real Fábrica de Cristales, se han formulado vidrios opales utilizando como opacificantes CaF2 y P2O5. El objetivo es obtener una composición compatible con el proceso de fabricación de la Fundación Centro Nacional del Vidrio usando el vidrio sonoro regularmente utilizado para la reproducción de piezas históricas. Los vidrios opales obtenidos se han caracterizado por espectrofotometría visible, difracción de rayos X, microscopia electrónica de barrido de emisión de campo y microanálisis de dispersión de energías de rayos X. Además, en los vidrios se ha medido la densidad, el coeficiente de dilatación térmica, la temperatura de transición vítrea y el índice de blancura. Los resultados indican que la opacificación que tiene lugar está directamente relacionada con la nucleación de microcristales y la separación de fases líquida. En los vidrios opacificados con CaF2 se produce la nucleación de microcristales de fluorita, mientras que en los opacificados con P2O5 tiene lugar un proceso combinado de nucleación de difosfato de silicio y silicato de calcio y de separación de fases. La opacificación inducida por CaF2 es más intensa que la que proporciona el P2O5, y adecuada para incorporar Co2+ a fin de obtener una opalina de color azul.

Los autores agradecen a la Fundación Centro Nacional del Vidrio las facilidades prestadas para la consecución parcial dela parte experimental. Asimismo, agradecen la financiación parcial del programa TOP Heritage (Comunidad de Madrid,P2018/NMT-4372), y el apoyo profesional de TechnoHeritage, Red de Ciencia y Tecnología para la Conservación del Patrimonio Cultural, y de la Plataforma Temática Interdisciplinar del CSIC, Patrimonio Abierto: Investigación y Sociedad (PTI-PAIS)

Este artículo está sujeto a una licencia CC BY-NC-ND 4.0

Peer reviewed

Country
Spain
Keywords

Crystal glass, Opalina, Opacificante, Clay industries. Ceramics. Glass, Fluorite, Opaline glass, Fluorita, TP785-869, Opacifier, Vidrio sonoro

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
views
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