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Titolo:
Surface characterization of float glass related to changes in the optical properties after reheating
Autore:
Hayashi, Y; Akiyama, R; Kudo, M;
Indirizzi:
Asahi Glass Co Ltd, Res Ctr, Kanagawa Ku, Yokohama, Kanagawa 2218755, Japan Asahi Glass Co Ltd Yokohama Kanagawa Japan 2218755 anagawa 2218755, Japan Seikei Univ, Dept Appl Phys, Musashino, Tokyo 1808633, Japan Seikei Univ Musashino Tokyo Japan 1808633 Musashino, Tokyo 1808633, Japan
Titolo Testata:
SURFACE AND INTERFACE ANALYSIS
fascicolo: 2, volume: 31, anno: 2001,
pagine: 87 - 92
SICI:
0142-2421(200102)31:2<87:SCOFGR>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
TIN;
Keywords:
float glass; optical haze; reheating; surface segregation of tin; surface iron concentration;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
12
Recensione:
Indirizzi per estratti:
Indirizzo: Hayashi, Y Asahi Glass Co Ltd, Res Ctr, Kanagawa Ku, 1150 Hazawa, Yokohama, Kanagawa 2218755, Japan Asahi Glass Co Ltd 1150 Hazawa Yokohama Kanagawa Japan 2218755
Citazione:
Y. Hayashi et al., "Surface characterization of float glass related to changes in the optical properties after reheating", SURF INT AN, 31(2), 2001, pp. 87-92

Abstract

Commercial soda-lime float glass samples, exhibiting different levels of their haze indices after reheating, have been investigated in terms of theirsurface morphology and surface composition. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) observations confirm that the originof the increase in the haze indices is due to the formation of roughness on the bottom face of the glass, which has been described as 'wrinkling'. Tin depth profiles in the bottom face of the float glass, with and without reheating, were measured by means of SIMS and XPS. It was found that a tin-enriched layer was formed at the surface, due to the migration of tin towardsthe surface during reheating. There was a linear correlation between the amount of tin enriched at the surface and the haze index after reheating. This observation indicates that the wrinkling is caused by the surface segregation of tin. Furthermore, SIMS depth profiles of iron at the bottom face have revealed that the amount of tin enriched at the surface is inversely correlated to the surface iron concentration. The surface iron concentration is dependent not only on the concentration in the bulk glass but also on the iron concentration in the tin bath and on the atmosphere used during the float process. In particular, iron as an impurity in the tin bath can penetrate into the bottom face of float glass. These analytical results, which have led to the successful improvement of the thermal durability of float glass, are discussed in detail. Copyright (C) 2001 John Wiley & Sons, Ltd.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 10:17:13