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Titanate-based lead-free silver electrode paste, preparation method and use method thereof

An electrode paste, lead silver technology, which is applied to conductive materials dispersed in non-conductive inorganic materials, cable/conductor manufacturing, circuits, etc. Achieve the effect of high Q value, good solderability and strong adhesion

Active Publication Date: 2020-08-21
武汉硕美特电子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this stage, the environmental protection requirements of lead-free in the publicly prepared silver paste and the performance requirements of the silver paste product used in 5G microwave ceramic filters cannot be met at the same time, which restricts the application of silver paste in microelectronic components

Method used

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  • Titanate-based lead-free silver electrode paste, preparation method and use method thereof
  • Titanate-based lead-free silver electrode paste, preparation method and use method thereof
  • Titanate-based lead-free silver electrode paste, preparation method and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A titanate-based 5G ceramic filter environment-friendly silver electrode paste (preparation 100g), its production process is as follows:

[0047] (1) Glass powder formula (preparation 100g): V 2 o 5 10g, B 2 o 3 20g, SiO 2 5g, ZnO 10g, Bi 2 o 3 38g,TiO 2 5g, Al 2 o 3 3g, SrO 1g, CaO 1g, Sm 2 o 3 1g, Nd 2 o 3 1g, CuO 1g, Na 2 O 2g, Li 2 O 2g;

[0048] (2) Glass melting and ball milling process: Mix the raw material formula in step (1) evenly and melt at 1200°C for 60 minutes, then quench and ball mill to particle size D 50 Less than 3μm, get lead-free glass powder;

[0049] (3) Highly active metal silver powder is spherical silver powder made by wet chemical silver nitrate reduction method, and the particle size of silver powder is D 50 = 1.6 μm;

[0050] (4) The organic vehicle is weighed according to the mass ratio of resin and solvent of 20:80, boiled at 120°C for 2 hours, and then filtered to obtain the organic vehicle;

[0051] (5) Slurry p...

Embodiment 2

[0068] A titanate-based 5G ceramic filter environment-friendly silver electrode paste (preparation 100g), its production process is as follows:

[0069] (1) Glass powder formula (preparation 100g): V 2 o 5 15g, B 2 o 3 25g, SiO 2 15g, ZnO 15g, Bi 2 o 3 10g,TiO 2 8g, Al 2 o 3 2g, SrO 1g, CaO 2g, Sm 2 o 3 1g, Nd 2 o 3 1g, CuO 1g, Na 2 O 2g, K 2 O 2g;

[0070] (2) Glass melting and ball milling process: Mix the raw material formula in step (1) evenly and melt at 1250°C for 60 minutes, then quench and ball mill to particle size D 50 Less than 3μm, get lead-free glass powder;

[0071] (3) Highly active metal silver powder is spherical silver powder made by wet chemical silver nitrate reduction method, and the particle size of silver powder is D 50 = 1.0 μm;

[0072] (4) The organic vehicle is weighed according to the mass ratio of resin and solvent of 15:85, boiled at 120°C for 2 hours, and then filtered to obtain the organic vehicle;

[0073] (5) Slurry ...

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Abstract

The invention discloses titanate-based lead-free silver electrode slurry, a preparation method and a use method thereof, and belongs to the technical field of preparation of microelectronic components. The silver paste comprises the following components in percentage by weight: 70-85% of high-activity silver powder, 1-5% of glass powder, 10-25% of an organic carrier, 1-5% of an inorganic additiveand 1-5% of a paste modifier. According to the silver paste developed by the invention, the V-B-Si-Zn-Bi-Ti glass frit is used for realizing the lead-free effect of the paste, the lead content of thepaste is less than 100ppm, and the contents of other harmful substances such as Hg, Cd, Cr and the like meet the requirements of RoHS environmental protection indexes; and with the application of thesilver paste in the electrode of the titanate-based 5G microwave ceramic filter, the silver paste with different viscosities can meet the requirements of printing, dip-coating or spraying processes, the adhesive force after sintering is greater than 10N / mm<2>, the solderability is good, the conductivity is excellent, the insertion loss of the filter can be reduced, and the filter has a relativelyhigh quality factor.

Description

technical field [0001] The invention belongs to the technical field of preparation of microelectronic components, and relates to a titanate-based lead-free silver electrode slurry and a preparation and use method thereof, in particular to a silver electrode for a titanate-based 5G microwave ceramic filter Slurry, the slurry can be coated on the surface of microwave ceramics by dipping, printing or spraying methods, and after sintering at 800°C to 850°C, conductive electrodes will be formed on the ceramic surface. The electrodes have strong adhesion, good conductivity, and can For direct welding use. Background technique [0002] With the development and application of 5G communication and Internet of Things technology, the market demand for microwave communication ceramic filters is increasing. Microwave ceramic filters have the advantages of small size, low loss, stable and reliable performance, etc., and are one of the key components of 5G communication. Titanate-based m...

Claims

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Application Information

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IPC IPC(8): H01B1/16H01B1/22H01B13/00
CPCH01B1/16H01B1/22H01B13/00
Inventor 范琳范迎辉高乐许佳陈栋
Owner 武汉硕美特电子材料有限公司
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