Influence of refractive indices of glass matrix on the reflectance of glass composites

• Published in: Metals and materials international Vol. 17; no. 4; pp. 593 - 598
• Main Authors: Jeon, Jaeseung, Lee, Jungki, Hwang, Seongjin, Ahn, Jihwan, Kim, Hyungsun
• Format: Journal Article
• Language: English
• Published: Springer The Korean Institute of Metals and Materials 01.08.2011; Springer Nature B.V; 대한금속·재료학회
• Subjects: Characterization and Evaluation of Materials; Chemistry and Materials Science; Engineering Thermodynamics; Heat and Mass Transfer; Machines; Magnetic Materials; Magnetism; Manufacturing; Materials Science; Metallic Materials; Processes; Solid Mechanics; 재료공학; composites; optical properties; refractive index; sintering; UV-Visible spectrometer
• ISSN: 1598-9623; 2005-4149
• DOI: 10.1007/s12540-011-0810-z

To understand the optical behavior of glass matrix composites, the species of glass matrix and ceramic filler, the mixing ratio, the refractive index of the components and the interaction between the matrix and the filler should be considered simultaneously. Two kinds of glass matrix with different refractive index (n = 1.50 and 1.69) and absorption coefficient were mixed with calcite (n = 1.59) in various volume percentages and their optical behavior, such as reflectance and scattering coefficient was studied after firing. The reflectance and the scattering coefficient increased with increasing calcite content regardless of the optical characteristics of the glass matrix. The reflectance of the composite was strongly correlated with the absorption coefficient of the glass matrix while the scattering coefficient of the composite was highly dependent on the refractive index of the glass matrix. We suggest that using the matrix with a higher refractive index than that of the filler may improve the reflectance of the glass composite.