Verres fluores a large bande de transmission optique et a haute resistance chimique
| Autor: | Michel Poulain, Marcel Poulain, Marc Matecki |
|---|---|
| Rok vydání: | 1981 |
| Předmět: |
Water resistant
Optical fiber Chemistry business.industry Mechanical Engineering Analytical chemistry Ionic bonding chemistry.chemical_element Condensed Matter Physics Vitreous state law.invention chemistry.chemical_compound Optics Mechanics of Materials law Fluorine General Materials Science business Fluoride Refractive index |
| Zdroj: | Materials Research Bulletin. 16:555-564 |
| ISSN: | 0025-5408 |
| DOI: | 10.1016/0025-5408(81)90121-5 |
| Popis: | New stable fluoride glasses have been obtained in the ThF4-AlF3-YF3-BaF2 quaternary system. The vitreous areas are described in the ThF4-(Al0.5Y0.5)F3-BaF2 system and in the four basic ternary diagrams. For a standard glass with molar composition 22.5 % ThF4, 28.75 % AlF3, 28.75 % YF3, 20 % BaF2, the characteristic temperatures are 446° C for TG and 710° C for the fusion. The refractive index nD is 1.489 and the density is 5.1. The optical transmission range lies from 330 nm to 7000 nm. These glasses are fluorine and water resistant. They are potential ultralow-loss optical fiber materials. Glass formation in this system is discussed by reference to the ionic analysis of the vitreous state. |
| Databáze: | OpenAIRE |
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