Thermal and dielectric properties of ZnO-B2O3-MO3 glasses (M = W, Mo)

• Published in: Journal of electroceramics Vol. 17; no. 1; pp. 65 - 69
• Main Authors: KIM, Jeong-Ryeol, CHOI, Geun-Kyu, DONG KYUN YIM, PARK, Jong-Sung, KUG SUN HONG
• Format: Conference Proceeding Journal Article
• Language: English
• Published: Heidelberg Springer 01.09.2006
• Subjects: Applied sciences; Building materials. Ceramics. Glasses; Chemical industry and chemicals; Exact sciences and technology; Glasses; Structure, analysis, properties; Glass transition temperature, Dielectric properties, Optical properties; Transition temperature; Boron oxide; Ternary system; Electrical properties; Dielectric properties; Plasma display panel; ZnO-B2O3-MO3; Molybdenum oxide; Experimental study; Thermal properties; Glass transition; Borate glasses; Tungsten oxide; Optical properties; Zinc oxide; Manufacturing
• ISSN: 1385-3449; 1573-8663
• DOI: 10.1007/s10832-006-9938-5

Glasses in the ZnO-B2O3-MO3 (M = W, Mo) ternary were examined as potential replacements to PbO-B2O3-SiO2-ZnO glass frits with the low firing temperature (500-600 deg C) for the dielectric layer of a plasma display panels (PDPs). Glasses were melted in air at 950-1150 deg C in a narrow region of the ternary using standard reagent grade materials. The glasses were evaluated for glass transition temperature (Tg), softening temperature (Td), the coefficient of thermal expansion (CTE), dielectric constant (sigmar), and optical property. The glass transition temperature of the glasses varied between 470 and 560 deg C. The coefficient of thermal expansion and the dielectric constant of the glasses were in the range of 5-8 x 10(-6)/ deg C and 8-10, respectively. The addition of MO3 to ZnO-B2O3 binary could induce the expansion of glass forming region, the reduction of Tg and the increase in the CTE and the dielectric constant of the glasses. Also, the effect of the addition of MO3 to ZnO-B2O3 binary on the transmittance in the visible-light region (350-700 nm) was investigated.