Preparation method of silver-coated copper-modified ruthenium oxide thick film resistor paste

A technology of thick-film resistors and silver-coated copper, which is applied in the direction of resistors with positive temperature coefficients, resistors, and non-adjustable metal resistors, can solve the problems of unfavorable large-scale production and high production costs, and is conducive to industrial production , Low preparation cost, cheap and easy-to-obtain raw materials

Active Publication Date: 2019-05-28
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a silver-coated copper-modified ruthenium oxide thick-film resistor paste preparation method, which solves the problem that the existing thick-film resistor paste has too high production cost and is not conducive to large-scale production

Method used

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  • Preparation method of silver-coated copper-modified ruthenium oxide thick film resistor paste

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Weigh the RuO respectively according to the mass ratio of 2:1 2 , silver-clad copper powder; the RuO to be weighed 2 Mix with silver-clad copper powder to form mixed material A; add the obtained mixed material A to a ball mill tank, and add deionized water and grinding balls to the ball mill tank, and after ball milling, get mixed material B, During the ball milling process, the amount of deionized water used in the ball milling medium is 0.6ml of deionized water per gram of the powder to be milled. The balls used are zirconia balls with a diameter of 3mm to 5mm, and the mass ratio of the ball to material is 1.5:1, speed 400rpm ball milling time is 6h; take out the mixed material B from the ball mill tank, dry the mixed material B at 50°C and pulverize it to obtain the mixed material C; put the obtained mixed material C into the crucible, The crucible was heated up to 800°C and kept warm for 8 hours, and after being naturally cooled to room temperature, the conductive ...

Embodiment 2

[0079] Weigh RuO respectively according to the mass ratio of 8:5 2 , silver-clad copper powder; the RuO to be weighed 2 Mix with silver-clad copper powder to form mixed material A; add the obtained mixed material A to a ball mill tank, and add deionized water and grinding balls to the ball mill tank, and after ball milling, get mixed material B, During the ball milling process, the amount of deionized water used in the ball milling medium is 0.8ml of deionized water per gram of powder to be milled. The balls used are zirconia balls with a diameter of 3 mm to 5 mm, and the mass ratio of balls to materials is 2:1, speed 450rpm ball milling time is 5h; take out the mixed material B from the ball mill tank, dry the mixed material B at 55°C and pulverize it to obtain the mixed material C; put the obtained mixed material C into the crucible, The crucible was heated up to 850°C and kept for 7.5 hours, and after being naturally cooled to room temperature, the conductive phase powder ...

Embodiment 3

[0084] Weigh the RuO respectively according to the mass ratio of 4:3 2 , silver-clad copper powder; the RuO to be weighed 2 Mix with silver-clad copper powder to form mixed material A; add the obtained mixed material A to a ball mill tank, and add deionized water and grinding balls to the ball mill tank, and after ball milling, get mixed material B, During the ball milling process, the amount of deionized water used in the ball milling medium is 0.9ml of deionized water per gram of the powder to be milled. The balls used are zirconia balls with a diameter of 3mm to 5mm, and the mass ratio of balls to materials is 2.5 : 1, the ball milling time is 4.5h at a rotating speed of 450rpm; take out the mixed material B from the ball mill tank, dry the mixed material B at 60°C and pulverize it to obtain the mixed material C; put the obtained mixed material C into the crucible, Heating the crucible to 900°C and keeping it warm for 7 hours, and after naturally cooling to room temperatur...

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Abstract

The invention discloses a silver covered copper modified ruthenium oxide thick-film resistor sizing agent preparation method, comprising the specific steps of S1, preparing conductive phase powder through utilization of RuO<2> and silver covered copper powder; S2, preparing modified ZnBSi glass phase powder through utilization of ZnO, B<2O<3>, SiO<2>, PbO and Bi<2>O<3>; S3, preparing organic carrier phase through utilization of terpilenol, cellulose, butyl carbitol and castor oil; and S4, uniformly mixing the conductive phase powder obtained in the S1, the modified ZnBSi glass phase powder obtained in the S2 and the organic carrier phase obtained in the S3, thereby obtaining the silver covered copper modified ruthenium oxide thick-film resistor sizing agent. According to the silver covered copper modified ruthenium oxide thick-film resistor sizing agent preparation method provided by the invention, the problem that the existing preparation cost of the thick-film resistor sizing agent is too high and large scale production is disadvantaged is solved.

Description

technical field [0001] The invention belongs to the technical field of preparation methods of thick-film resistor paste, and in particular relates to a preparation method of silver-coated copper-modified ruthenium oxide thick-film resistor paste. Background technique [0002] Thick film resistor paste is an electronic functional material integrating materials, chemical industry, metallurgy and electronic technology. It has been widely used in hybrid integrated circuits, surface mount technology, resistor networks and various discrete electronic components. Among them, the ruthenium-based thick-film resistor paste occupies a very important position in the manufacture of thick-film hybrid integrated circuits because of its excellent electrical properties, high process repeatability, good stability, and wide resistance range. [0003] Thick film resistor paste consists of four parts: conductive phase (generally composed of noble metal powder, noble metal oxide powder and other ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01C7/02
CPCH01C7/027
Inventor 李智敏孙鹏宁涛张茂林闫养希李培咸
Owner XIDIAN UNIV
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