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Optical Properties of Opal Glass on the Various Contents of Chemical Composition KCI 등재 SCOPUS
- 언어ENG
- URLhttps://db.koreascholar.com/Article/Detail/297412
pp.59-66
Opal glass samples having different chemical compositions were synthesized and transparent glass was obtained after melting. The effects of TiO2, BaF2, and CeO2 content on the color of the opal glass were studied by observing images of the opal samples and analyzing the results via ultraviolet visible spectroscopy and color spectrometry. The aesthetic properties of the opal glass were determined by studying the transmittance of visible light in the 400 nm to 700 nm range. The basic chemical composition of opal glass was SiO2 52.9 wt%, Al2O3 12.35 wt%, Na2CO3 15.08 wt%, K2CO3 10.35 wt%, Ca3(PO)4 4.41 wt%, MgCO3 1.844 wt%, LiCO3 2.184 wt%, and TiO2 0.882 wt%. The glass samples were prepared by varying the weight percentage of TiO2, BaF2, and CeO2. The transmittance of visible light was decreased from 95 % to 75 % in the glass samples in which TiO2 content was increased from 0 to 3.882 wt%. In the blue spectrum region, as the content of TiO2 increased, the reflectance value was observed to become higher. This implies that TiO2 content induces more crystal formation and has an important effect on the optical properties of the glass. The opalescence of opal samples that contained CeO2 or BaF2 is stronger than that in the samples containing TiO2. Opal glass samples comprising TiO2 had tetragonal lattice structures; samples including CeO2 as an additive had cubic lattice structures (FCC, CeO2).
