| 摘要 |
PROBLEM TO BE SOLVED: To provide a porcelain composition which can be sintered at a low temperature, has low shrinkage starting temperature when sintered and excellent matching properties with Ag or Cu when shrunk and prevents a warp or the like of a substrate even when the porcelain composition is sintered together with conductor material. SOLUTION: This porcelain composition contains, based on 100 parts weight of the principal component shown by the composition formula: (1-x)Al18B4O33- xMgTiO3 (0<=x<=0.6), 3-20 parts weight B in terms of B2O3, 1-10 parts weight Li in terms of Li2O3, 0-30 parts weight Si in terms of SiO2, 1-5 parts weight of at least one metal selected from the group of Mg, Ca, Sr and Ba in terms of its oxide and 0.1-15 parts weight Mn in terms of MnO2. |
