Glass and conductive paste using this glass
A conductive paste, glass technology, applied to glass. field, can solve the problem of not getting glass, etc., and achieve the effect of excellent reliability, excellent performance, high bonding strength and peeling strength
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example 1
[0037] The starting materials were prepared to obtain the oxide compositions shown in Table 1, melted in a platinum crucible at a temperature of about 1150 degrees (Celsius), poured them onto graphite, air cooled to obtain a glass, which was then finely divided with alumina balls Finely ground to obtain glass powders A-K, X and Y. Powders X and Y are outside the scope of this invention. The glass transition temperature (Tg), softening point (Ts) and crystallization temperature (Tc) of each glass frit were measured with a thermal analyzer. The results are shown in Table 1.
[0038] The water resistance of each glass frit was evaluated in the following manner. A carrier prepared by dissolving an acrylic resin in terpineol was mixed with each glass frit to prepare a glass paste to be coated on an alumina substrate, and then heated at 850° C. in a nitrogen atmosphere with an oxygen concentration not exceeding 5 ppm. Firing at a high temperature to form a glass film. The result...
example 2
[0041] A conductive paste was prepared using the glass powder obtained in Example 1 in the following manner. Each conductive paste was prepared by mixing 12 parts by weight of glass powder and 40 parts by weight of a carrier having an acrylic resin dissolved in terpineol with 100 parts by weight of copper powder, and mixing these ingredients in a three-roll mill. A conductive paste was then applied by dipping to the end faces of the internal electrodes exposed from the fired ceramic body of the multilayer ceramic capacitor, whereby a film having a thickness of about 120 μm after firing was obtained, said ceramic capacitor having a planar dimension of 3.2 mm ×1.6mm, which is prepared by using ceramics containing barium titanate as the main component and having the F characteristic curve specified by JIS as the dielectric, and using nickel as the internal electrode. Each ceramic body was then dried for 10 minutes at a temperature of 150°C in a hot air drier, and then at the peak...
example 3
[0051] Using the glass powders E-K, A, and X obtained in Example 1, the conductive paste was prepared in the same manner as in Example 2. Each conductive paste is then coated by a dipping method on the end faces of the internal electrodes exposed by the fired ceramic body of the multilayer capacitor ceramic body, wherein the capacitor ceramic body has a thickness of about 120 µm after firing. The plane size of the battery is 2.0mm×1.25mm. It is made by using ceramics containing barium titanate as the main component and having the B characteristic curve specified by JIS standard as the dielectric and nickel as the internal electrode. Each ceramic body was then placed in a hot air drier and dried at a temperature of 150°C for 10 minutes, followed by a total temperature of 800°C at a peak temperature of 800°C in a nitrogen atmosphere with an oxygen concentration of no more than 5 ppm using a belt muffle furnace. Firing for 1 hour, wherein the retention time of the peak temperatur...
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Abstract
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