Advances in Fusion and Processing of Glass III, Volume 141

Glass is still a cloth of significant medical and technological curiosity; notwithstanding, the industrial pressures at the glass undefined, the emphasis on international markets, and the global consciousness to power and environmental conservation proceed to extend. Forty-seven papers supply new recommendations to the demanding situations of glass production, rather as they pertain to melting and forming.Content:

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10 mol Fe /kg glass 65-70 seeds/cm2 + °-14 mo1 C e ^ g § la 22 seeds/cm2 Figure 12. Seeds in float-glass samples containing sulfate, with addition of iron oxides or cerium oxides. Primary fining during 90 minutes at 1675 K and after fining, slow cooling with 1 K/min. Largest bubble diameter in glass without Fe203 and Ce0 2 : d = 220 μπι. Largest bubble in cerium-oxide-containing glass: d = 120 μπι. 26 Advances in Fusion and Processing of Glass III Melting Experiments with Helium Bubbling Glass samples from soda-lime-silica melts intensively bubbled with helium prior to primary fining have been compared to glass pieces from glass melts not bubbled, or bubbled with other gases.

Okada: "Process for producing a glass for cathode ray tubes," European Patent Application Asahi Glass Co. Ltd. Tokyo 100-8405 (JP) Patent nr. EP-1245539 Al (2002) 19 R. Kitamura, H. Itoh, Y. Taskei and T. Kawaguchi: "Mathematical model of the bubble growth at reduced pressures," Proc. Int. Congr. Glass, Vol. 2. -6. July 2001, pp. 361-362 20 W. Wintzer, S. Römhild and D. Ehrt: "Einfluss von Unterdruck auf die Läuterung von Glasschmelzen," Kurzreferate 76. -29. Mai, Bad Soden am Taunus, pp. 99-102 21 R.

51 (1987), nr. 12, pp. O. Mulfinger and H. Scholze: "Löslichkeit und Diffusion von Helium in Glasschmelzen, 2. Diffusion," Glastech. Ber. 35 (1962) nr. 11, pp. H. Frischat and HJ. Oel: "Bestimmung des Diffusionskoeffizienten von Helium in Glasschmelzen aus der Abnahme einer Blase," Glastech. Ber. 38 (1965) nr. 4, pp. H. Doremus: "Diffusion of oxygen from contracting bubbles in molten glass," J. Am. Ceram. Soc. 43 (1960), pp. 655-661 58 L. Nemec: "Diffusion-controlled dissolving water vapor bubbles in molten glass," Glass Technol.

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