| 摘要 |
PROBLEM TO BE SOLVED: To provide a glass composition, a powder material, and a powder material paste which can be baked at a temperature of 840°C or lower even when PbO is contained in the glass composition not in a large amount, causes difficultly a warpage of a substrate or a peeling from a substrate, and is difficultly eroded by a plating solution. ! SOLUTION: The glass composition contains as a glass composition, in a mol%, SiO2 in 50-70%, B2O3 in more than 4-15%, ZrO2 in 5-15%, ZnO in 1-10%, MgO+CaO+SrO+BaO in 0.5-20%, Li2O+Na2O+K2O in 0.5-15%, and Al2O3 in 0-10%, and in the glass composition, a molar ratio of (SiO2+ZrO2)/(B2O3+ZnO) is more than 2.8. ! COPYRIGHT: (C)2015,JPO&INPIT |
