Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Tungsten copper electrode slurry for high-temperature co-fired ceramic system and manufacturing method of tungsten copper electrode slurry

A technology of high-temperature co-fired ceramics and electrode slurry, which is used in the manufacture of cables/conductors, conductive materials dispersed in non-conductive inorganic materials, circuits, etc. It can solve problems such as insufficient surface smoothness, poor products, and stability defects. , to achieve the effect of matching the shrinkage rate, improving the tap density, and good anti-oxidation ability.

Pending Publication Date: 2022-07-15
SEMITEL ELECTRONICS
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large difference in the melting point of the two metal powders and the low shrinkage matching degree, and the alloy formed by tungsten-copper is in the form of a pseudo-alloy, there are also defects in stability. Layers and Cracking Issues
[0006] (2) Due to the high melting point of tungsten powder, there will be insufficient dissolution during the sintering process, resulting in insufficient surface smoothness, resulting in uneven surface resistance of the electrode, and a correspondingly large square resistance
[0007] (3) Due to the different uses of tungsten paste, its types are divided into surface paste, inner paste, hole-filling paste and wall-hanging paste. It is troublesome to control during production and use. The printing process needs to be cleaned continuously, which is easy to cause waste. In addition, after mixing It will also cause defective products; if a slurry that can achieve multiple functions is developed to replace the original variety of slurry, it will simplify the management and control, and reduce the waste of raw materials, thereby saving production costs

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Tungsten copper electrode slurry for high-temperature co-fired ceramic system and manufacturing method of tungsten copper electrode slurry
  • Tungsten copper electrode slurry for high-temperature co-fired ceramic system and manufacturing method of tungsten copper electrode slurry
  • Tungsten copper electrode slurry for high-temperature co-fired ceramic system and manufacturing method of tungsten copper electrode slurry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A method for preparing a tungsten-copper electrode slurry for a high-temperature co-fired ceramic system in this embodiment includes the following steps:

[0049] Step 1, prepare organic carrier

[0050] Take 15 parts of low-viscosity ethyl cellulose, 25 parts of terpineol, 25 parts of lauryl ester, 20 parts of butyl carbitol acetate and 2 parts of silicone oil leveling agent. After dissolving, the organic carrier was obtained after passing through a 1000-mesh sieve.

[0051] In the present invention, low-viscosity ethyl cellulose is selected as the binder of the organic carrier; the content of the low-viscosity binder can be increased during use, and the carbon powder decomposed under anoxic conditions is relatively large, which is beneficial to the oxidation of oxides in the sintering process. Reduction; In addition, low viscosity is relatively low in degree of polymerization, low in decomposition temperature, and small in residue after decomposition. The carbon powd...

Embodiment 2

[0066] A method for preparing a tungsten-copper electrode slurry for a high-temperature co-fired ceramic system in this embodiment includes the following steps:

[0067] Step 1, prepare organic carrier

[0068] Take 25 parts of low-viscosity ethyl cellulose, 35 parts of terpineol, 20 parts of lauryl ester, 20 parts of butyl carbitol acetate and 5 parts of silicone oil leveling agent. After dissolving, the organic carrier was obtained after passing through a 1000-mesh sieve.

[0069] Step 2, prepare high temperature glass powder

[0070] Weigh the following raw materials in parts by weight: B 2 O 3 15 parts, 15 parts MgO, Al 2 O 3 55 parts, SiO 2 10 servings, Mo 2 O 3 10 parts, CaO 8 parts, La 2 O 3 10 parts; place the weighed raw materials in an agate ball mill tank, the ratio of the balls to the material is 1:3, the dry powder is ball-milled for 2h, and passed through an 80-mesh sieve to obtain a mixture;

[0071] The obtained mixture was placed in a ceramic cr...

Embodiment 3

[0082] A method for preparing a tungsten-copper electrode slurry for a high-temperature co-fired ceramic system in this embodiment includes the following steps:

[0083] Step 1, prepare organic carrier

[0084] Take 20 parts of low-viscosity ethyl cellulose, 30 parts of terpineol, 25 parts of dodecyl ester, 25 parts of DBE and 5 parts of silicone oil leveling agent. After sieving, an organic carrier is obtained.

[0085] Step 2, prepare high temperature glass powder

[0086] Weigh the following raw materials in parts by weight: B 2 O 3 12 parts, 13 parts MgO, Al 2 O 3 50 parts, SiO 2 8 servings, Mo 2 O 3 8 parts, CaO 5 parts, La 2 O 3 8 parts; place the weighed raw materials in an agate ball mill tank, the ratio of the balls to the material is 1:3, dry powder ball mill for 2h, pass through an 80-mesh sieve to obtain a mixture;

[0087] The obtained mixture was placed in a ceramic crucible, put into a muffle furnace, heated to 1200° C., and melted for 2 hours to...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
softening pointaaaaaaaaaa
melting pointaaaaaaaaaa
Login to View More

Abstract

The invention discloses tungsten-copper electrode slurry for a high-temperature co-fired ceramic system and a preparation method of the tungsten-copper electrode slurry. The method comprises the following steps: step 1, preparing an organic carrier; 2, preparing high-temperature glass powder; thirdly, tungsten powder treatment is conducted, and tungsten-copper alloy powder is obtained; step 4, preparing electrode slurry: weighing 1-5 parts by weight of high-temperature glass powder, 85-95 parts by weight of tungsten-copper alloy powder, 1-5 parts by weight of oxide powder and 1-5 parts by weight of a solid powder dispersing agent, mixing to obtain premixed powder, adding 10-15 parts by weight of an organic carrier into 80-90 parts by weight of the premixed powder, and uniformly stirring to obtain the electrode slurry; and grinding to obtain the tungsten copper electrode slurry for the high-temperature co-fired ceramic system. The tungsten copper electrode slurry has the advantage of low sintering temperature, the problems of layering and cracking cannot be generated in the sintering process, the surface solubility and surface smoothness are good after high-temperature sintering, and the conductivity of an electrode is improved.

Description

technical field [0001] The invention relates to the technical field of electronic paste, in particular to a tungsten copper electrode paste used in a high-temperature co-fired ceramic system and a manufacturing method thereof. Background technique [0002] With the rapid development of the information age, electronic equipment continues to develop in the direction of miniaturization, multi-function and high reliability, and the circuit structure design becomes more and more complex; in order to be able to lay out more circuits with different functions within a certain geometric scale, The circuit structure design usually adopts the way of multi-layer wiring. Alumina ceramics is a cheap and readily available material with the advantages of excellent electrical properties, high structural strength, and good compatibility with various metal materials, so it is widely used as a dielectric material for ceramic substrates in multilayer wiring technology. The alumina content in al...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/00H01B1/16H01B1/22
CPCH01B13/0016H01B13/00H01B1/16H01B1/22
Inventor 董福兴戴剑仇利民袁生红
Owner SEMITEL ELECTRONICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com