| Home | Log-in | Admin | Sitemap |
Home | Program | Detailed Program
Detailed Program
Paper Number : GL-P07
Time Frame : 12:00~13:30
Presentation Date : Thursday, 27, November
Session Name : Glass & Opto-Electronic Materials
Session Chair 1# : -
Session Chair 2# : -
Compositional Effects of the Metal Oxides on Reaction Between Sealing Glass and Soda-lime Glass Substrate
Ms. Aram Sung
Inha University
Packaging needs to be hermetic for the manufacturing electornic deives because they are easily damaged by water vapor. Epoxy or metal is widely used as sealing materials, but they have poor strength, short lifetime and high coefficient of thermal expansion which cause the electrical malfunctions by crack generations. On the other hand, glass sealing has high strength and excellent reliability, and it can make hermetic sealing easily. Although the glass frits containing PbO is well known as a low temperature sealing glass, the recent environmental regulation restricts the use of the PbO. Thus, Pb-free sealing glass systems which have low thermal properties and high adhesive strength are being developed. In this study, we have investigated the glass forming region of V2O5-P2O5-ZnO system and the effects of the addition of metal oxides on the glass transition temperature and coefficient of thermal expansion. Thermal properties and viscous flows of frits were measured via differential scanning calorimeter, dilatometer and hot stage microscope. Interfacial reactions between glass frit and substrates were observed by scanning electron microscope after firing. These frits had a low softening point(¢®Â400oC) and proper CTE(≈75x10-7/K) to the soda-lime glass substrate. It was also found that metal oxides induce the diffusion of the mobile ions from the glass substrates to the glass sealant and the crystallization near the interface. This indicates that thermal diffusion of ions and the area ratio of the crystal is related with the adhesive strength between sealant and glass substrate.
Acknowledgements : This work was supported by the Energy Efficiency & Resources of the Korea Instiute of Energy Technology Evaluation and Planning(KETEP) grant funded by the Korea government Ministry of Knowledge Economy (No.20132020101460)