Thermal and dielectric properties of ZnO-B2O3-MO3glasses (M = W, Mo)
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∘C) for the dielectric layer of a plasma display panels (PDPs). Glasses were melted in air at 950–1150∘C in a narrow region of the ternary using standard reagent grade materials. The glasses were evaluated for glass transition temperature (T g ), softening temperature (T d ), the coefficient of thermal expansion (CTE), dielectric constant (ε r ), and optical property. The glass transition temperature of the glasses varied between 470 and 560∘C. The coefficient of thermal expansion and the dielectric constant of the glasses were in the range of 5–8 × 10− 6/∘C and 8–10, respectively. The addition of MO3to ZnO-B2O3binary could induce the expansion of glass forming region, the reduction of T g and the increase in the CTE and the dielectric constant of the glasses. Also, the effect of the addition of MO3to ZnO-B2O3binary on the transmittance in the visible-light region (350–700 nm) was investigated.
KeywordsPlasma display panel ZnO-B2O3-MO3 Glass transition temperature Dielectric properties Optical properties
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- 3.H. Masuda, R. Kimura, N. Sakamoto, and K. Morinaga, J. Jpn. Inst. Met., 63(3), 284 (1999).Google Scholar
- 4.M.L. Cha, J.S. Jeon, and H.S. Kim, Eco-Mater. Processing & Design VI Mater. Sci. Forum, 486–487, 325 (2005).Google Scholar
- 5.H.S. Zhao, Y.Q. Li, W.C. Zhou, F. LuO, and C.H. Tang, J. Inor. Mat., 20(3), 563 (2005).Google Scholar
- 8.A.K. Varshneya, Fundamentals of Inorganic Glasses (Academic Press, San Diego, 1994), p. 107.Google Scholar
- 10.H. Scholze, Glass, Nature, Structure, and Properties (Springer, New York, 1991), pp. 232, 318.Google Scholar