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Glass and conductive tube using this glass

A technology of conductive paste and glass, applied to glass. field, can solve the problem of not getting glass, etc.

Inactive Publication Date: 2005-10-19
SHOEI CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Therefore, the various glasses that have been developed so far have their own advantages, but a glass that can meet all requirements has not yet been obtained.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0036] 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.

[0037] 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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PUM

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Abstract

A glass containing no lead and comprising, calculated as oxides: 40-60 wt. % ZnO, 15-35 wt. % B2O3, 1-16 wt. % SiO2, 1-10 wt. % Al2O3, 2-15 wt. % MnO2, and at least one selected from the group consisting of Li2O, Na2O and K2O in their total of 0.5-10 wt. %, and a glass with the above-described components where a total of at least one selected from the group consisting of Li2O, Na2O and K2O is 0-5 wt. %, and at least one selected from the group consisting of MgO, CaO, TiO2, Cr2O3, ZrO2, Ta2O5, SnO2, and Fe2O3 is further included in their total of 0.1-5 wt. %. A conductive paste using such a glass as an inorganic binder has a superior binder removal ability and a good sinterability and can form dense conductors with excellent characteristics with respect to resistance to plating solutions, adhesive strength, resistance to thermal shocks, etc.

Description

technical field [0001] The present invention relates to a conductive paste suitable for forming electrodes of electronic parts and conductors of thin film circuits, and a glass used therein. In particular, the invention relates to a conductive paste which can be fired even in a non-oxidizing atmosphere, suitable for forming terminations of internal electrodes of multilayer ceramic components using base metals such as nickel or copper, and to the glass used therein. technical background [0002] Multilayer ceramic components such as multilayer capacitors, multilayer inductors, etc. are generally manufactured in the following manner. For example, unfired (green) ceramic sheets made of a dielectric material or a magnetic material are alternately stacked with a plurality of internal electrode paste layers to obtain a green laminate. The laminate is then cut and fired at high temperature to obtain a ceramic body (hereinafter referred to as "ceramic body"). Then, by any one of v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/066C03C8/04C03C8/18H01B1/16H01L23/15
CPCC03C3/066H01B1/16C03C8/04C03C8/18
Inventor 田中哲也森永健次山添幹夫河原惠
Owner SHOEI CHEM IND CO LTD
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