Sealing Glass with Specific Thermal-Expansion Coefficient

• Main Authors: Chuang, Ying-Yen, 莊穎彥
• Other Authors: Jiin-Jyh Shyu
• Format: Others
• Language: zh-TW
• Published: 1997
• Online Access: http://ndltd.ncl.edu.tw/handle/47847567488254984658

碩士 === 大同工學院 === 材料工程學系 === 85 === Abstract Effects of the ceramic filler (Pb1-xCax)TiO3 on the properties of thePbO-B2O3 based sealing glass were investigated. The flowability,crystallization,microstructure,and coefficient of thermalexpansion(CTE) of the (filler + glass) composite will be discussed. The experimental results indicate that the raw materials and processing ofthe PbO-B2O3 glass play an important role on the resulting properties of the(glass + filler) composites. Pb3O4-containing PbO was used as the raw materialfor the lead oxide.This suppressed the problem of lead reduction during glassmelting and resulted in an excellent flowability of the resulting glass. Increase of Ca content in the (Pb1-xCax) TiO3 filler decreases the Curietemperature and CTE. The (glass + filler) sealing glasses with the optimum properties(CTE andflowability) contain 20-30vol% of the (Pb0.75Ca0.25)TiO3 perovskite filler,which exhibits an initial particle size of about 10-15 um.