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26 December 1984 Si02 Gel Glasses
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Glasses are usually formed by solidification from the melt. In the last few years, sol-gel methods have received considerable scientific attention among ceramic and glass scientists as an alternative method of glass formation. The apparent advantages of sol-gel processing over the conventional melting method for glass preparation are: (1) lower temperature of preparation, (2) higher purity, (3) non-crystalline solids outside the range of normal glass formation, (4) increased homogeneity, (5) new crystalline phases from new non-crystalline solids, (6) better glass products from special properties of gels, (7) special optical glass. We suggest that other potential advantages relevant to manufacture of optical components include: 1) rapid production, 2) large shapes, 3) as-formed near net shape, 4) as-formed optically smooth surface, 5) unique indices of refraction, 6) density derived index gradients, 7) unique absorption bands, 8) ease of sealing and joining of components, 9) reproducibility, and 10) computer aided processing.
© (1984) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
L. L. Hench, S. H. Wang, and S. C. Park "Si02 Gel Glasses", Proc. SPIE 0505, Advances in Optical Materials, (26 December 1984);


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