Effect of SiO2 Addition to BaO-ZnO-B2O3 Glass on Dielectric and Thermal Properties for Application to Barrier Ribs of Plasma Display Panels

Abstract

The effect of SiO 2 addition to barium zinc borate (BaO-ZnO-B 2 O 3 , BZB) glass on dielectric and thermal expansion properties was investigated. When SiO 2 was added to the glass batch to form a SiO 2 -BaO-ZnO-B 2 O 3 (SBZB) glass, the dielectric constant decreased significantly from 15.5 to 9.9. When SiO 2 (quartz) was further added to the SBZB in the form of filler particles to yield ceramic filler-reinforced SBZB microcomposites, the dielectric constant was further decreased. The coefficient of thermal expansion (CTE) of SBZB was slightly lower than the allowable range, while the filler addition to SBZB correspondingly increased CTE to the allowable range. Thus, the addition of SiO 2 to BZB glass to form SBZB glass and further addition to SBZB in the form of ceramic filler were shown to be amenable ways to tailor the dielectric constant as well as CTE of the barrier rib glass for the PDP application.

Thermophysical Properties of Ceramic Filler-Added BaO–ZnO–B2O3–P2O5 Glass Composites for Barrier Ribs of Plasma Display Panels

“…The formation of the ZnO second phase is observed only when TiO 2 is added, whereas the BaZn 2 (PO 4 ) 2 phase appears for the cases of Al 2 O 3 and ZnO filler additions as well. It is well known that various refractory ceramic fillers such as TiO 2 , Al 2 O 3 , ZrO 2 , MgO, and cordierite are partially dissolved in a low-melting glass such as barium zinc borosilicate glass [4][5][6][7]. Such partial dissolution of the fillers would also be the case herein in the BZBP glass matrix.…”

“…These deviations can be correlated to the formation of the second phase BaZn 2 (PO 4 ) 2 , which might possess a lower CTE than Al 2 O 3 , at 20 mass% addition of Al 2 O 3 . Since the amount of partially dissolved fillers increases as the filler addition increases [4][5][6][7], the increased alteration of the glass property at 20 mass% addition of TiO 2 and Al 2 O 3 would also contribute to deviations from the predictions.…”

“…Because of the deleterious influence of PbO on health and environment during processing, there has been much work to avoid the use of PbO constituents. Some of the notable alternative glasses are the recently reported BaO-ZnO-B 2 O 3 [3] and BaO-ZnO-B 2 O 3 -SiO 2 [4][5][6][7] systems.…”

Low-temperature densification sintering and properties of CaAl2Si2O8 ceramics with MeO·2B2O3 (Me = Ca, Sr, Ba)

“…As ordinary raw materials, alumina and quartz are usually used to improve the sintering behavior of industrial ceramics such as structure ceramics and porcelains [13,22]. Therefore, we introduced alumina and quartz powders to the three borate flux agents to improve the sintering behavior and properties of the CaAl 2 Si 2 O 8 ceramics.…”

Fabrication and evaluation of Pb(W0.5Cu0.5)O3 modified PLZT piezoelectric ceramics

“…Among these, doping with additives is widely considered the most effective and economical method for improving densification of the ceramics at low temperature. And several metal oxides such as LiBiO 3 , CuO, PbGeO 3 , BiFeO 3 , Ba(Cu 0.5 W 0.5 )O 3 , LiO 2 , Sb 2 O 3 have been found to be additives that can help lower the sintering temperature and produce PLZT ceramics with similar or even enhanced piezoelectric properties [8][9][10][11][12][13][14][15].…”