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Conductive fine powder, conductive paste and electronic component

A technology of electronic components and conductivity, which is applied in the direction of conductive materials dispersed in non-conductive inorganic materials, parts of fixed capacitors, electrical components, etc., and can solve the gap between metal particles, the deterioration of electrical characteristics of electronic components, and the burial of metal particles, etc. problems, to achieve high coverage, inhibit electrode cracking, and improve the filling rate

Inactive Publication Date: 2013-09-25
NAPRA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the firing process, metal particles cannot be used to bury the burnt traces of the organic vehicle, and it is easy to generate gaps between the metal particles.
The presence of such gaps, i.e., electrode cracks, leads to deterioration of electrical characteristics of electronic components

Method used

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  • Conductive fine powder, conductive paste and electronic component
  • Conductive fine powder, conductive paste and electronic component
  • Conductive fine powder, conductive paste and electronic component

Examples

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Embodiment Construction

[0039] refer to figure 1 , The conductive fine powder of the present invention contains flat metal / alloy fine particles 1 . The flat metal / alloy fine particles 1 have a nanocomposite structure in which crystalline or amorphous nanoparticles 112 are mixed or generated in a base material, the maximum thickness T1 is 50 nm or less, and the maximum diameter D1 is more than twice the thickness. The thickness of the flat metal / alloy particles 1 does not need to be uniform as a whole, and can vary between the maximum thickness T11 and the minimum thickness T12.

[0040] Figure 2 to Figure 5 is a diagram schematically showing a nanocomposite structure. figure 2 The shown form is, for example, a form in which nano-sized crystalline or amorphous nanoparticles 112 are dispersed inside a base material structure 111 which is a crystalline structure. In addition, it is also possible to form a form in which nanoparticles 112 are dispersed in the grain boundaries of the matrix structure ...

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Abstract

The invention provides a conductive fine powder, a conductive paste and an electronic component. The conductive fine powder includes flat metal / alloy fine particles. The flat metal / alloy fine particles have a nanocomposite structure in which crystalline or non-crystalline nanoparticles are mixed or formed in a matrix. The flat metal / alloy fine particles have a maximum thickness of 50 nm or less and a maximum diameter at least twice the thickness and contain a high-melting-point metal and a low-melting-point metal.

Description

technical field [0001] The present invention relates to conductive fine powder, conductive paste and electronic parts. Background technique [0002] Laminated electronic components such as laminated ceramic capacitors can be obtained by coating a necessary number of sheets with a conductive paste used as internal electrodes by screen printing, as disclosed in, for example, Japanese Patent Application Laid-Open No. 2004-47536 Ceramic green sheet (or green sheet: green sheet) is manufactured by cutting into individual parts after crimping, and then firing. As a typical example of the conductive paste, one obtained by dispersing spherical metal fine particles such as Ni in an organic vehicle can be used. [0003] The conductive paste using spherical metal particles is suitable for the screen printing method. However, in the firing process, metal fine particles cannot be used to bury the burnt traces of the organic vehicle, and gaps are likely to be generated between the metal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/02H01B1/22H01G4/008B22F1/00B22F1/054B22F1/10B22F1/14
CPCH01B1/22B22F9/082B22F2009/084B22F2009/0888B22F2999/00H01G4/30H01G4/0085B82Y30/00H01G4/12B22F1/0551B22F1/14B22F1/054B22F1/10B22F1/00B22F9/10B22F2202/13B22F9/00H01G4/008
Inventor 关根重信关根由莉奈
Owner NAPRA