| 摘要 |
PURPOSE:To obtain resistor paste, a resistance value and a resistance-value temperature coefficient of which are acquired stably, and a ceramic substrate by composing the resistor paste of glass powder and In2O3, specifying the inorganic component of glass powder by weight% display and firing the whole in a non-oxidizing atmosphere. CONSTITUTION:An inorganic component consists of 20-70 glass powder and 30-80 In2O3 by weight% display, the inorganic component of glass powder is made up substantially of 15-16 SiO2, 0-30 Al2O3, 0-40 MgO, 0-40 CaO, 0-60 SrO, 0-60 BaO, 10-60 MgO+CaO+SrO+BaO, 0-10 Li2O+Na2O+K2O+Cs2O, 0-10 PbO, 0-40 ZnO, 0-10 ZrO2+TiO2, and 5-40 B2O3 by weight% display, and resistor paste for a ceramic substrate fired substantially in a non-oxidizing atmosphere is acquired. For prepare a conductor on the ceramic substrate such as an alumina substrate solidified after firing, a glass ceramic board or the like, Cu paste is printed onto the specified board, and dried, and fired for five or ten min at 850-950 deg.C in a nitrogen atmosphere of oxygen concentration of 20ppm or less. |
