Supercharge Your Innovation With Domain-Expert AI Agents!

Medium temperature sintering glass powder and preparation method thereof

A technology for sintering glass and medium temperature is applied in the field of medium temperature sintering glass powder and its preparation. Low point, good ohmic contact effect

Inactive Publication Date: 2015-07-08
SHANGHAI JIAOTONG UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Domestic research began in the late 1980s, and products were launched in the 1990s, but electrode materials are generally not stable in performance, which is manifested in large voltage differences, large positive and negative polarities, large welding and pulse change rates, and sometimes even in the production process. The voltage drop of the product in or in stock causes the product to fail
so as not to protect

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
  • Medium temperature sintering glass powder and preparation method thereof
  • Medium temperature sintering glass powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Provide each raw material according to the composition in Table 1 and mix them evenly. Put the mixture into a muffle furnace at 300°C for half an hour, then transfer it to a high-temperature resistance furnace at 1100°C and heat it for 1.5 hours to obtain clear and uniform glass melting body. Then the glass melt was quenched in deionized water, and after cooling, the quenched glass was dried in a blast oven at 85°C. After drying, use Large grinding balls, 285 rpm, dry grinding for 14 hours. then replace it with The small grinding ball, add alcohol, 350 rpm, wet grinding for 38 hours. After being ground, the glass powder is filtered and dried through a 300-mesh steel mesh to obtain medium-temperature sintered glass powder. Take glass powder to make slurry, and get good ohmic contact performance, such as used in SrTiO 3 When the ohmic paste of the varistor is used, the ohmic contact resistance value after sintering is 0.22MΩ, which meets the market requirements.

Embodiment 2

[0027] Provide each raw material according to the composition in Table 1 and mix them evenly. Put the mixture into a muffle furnace at 300°C for half an hour to preheat, and then transfer it to a high-temperature resistance furnace at 1150°C for heating for 1 hour to obtain clear and uniform glass melting. body. Then the glass melt was quenched in deionized water, and after cooling, the quenched glass was dried in a blast oven at 85°C. After drying, use Large grinding balls, 285 rpm, dry grinding for 12 hours. then replace it with The small grinding ball, add alcohol, 350 rpm, wet grinding for 30 hours. After being ground, the glass powder is filtered and dried through a 300-mesh steel mesh to obtain medium-temperature sintered glass powder. Take glass powder to make slurry, and get good ohmic contact performance, such as used in SrTiO 3 When the ohmic paste of the varistor is used, the ohmic contact resistance value after sintering is 0.2MΩ, which meets the market requ...

Embodiment 3

[0029] Provide the raw materials according to the composition in Table 1 and mix them evenly. Put the mixture into a muffle furnace at 300°C for half an hour and then transfer it to a high-temperature resistance furnace at 1200°C for heating for 1 hour to obtain clear and uniform glass melting. body. Then the glass melt was quenched in deionized water, and after cooling, the quenched glass was dried in a blast oven at 85°C. After drying, use Large grinding balls, 285 rpm, dry grinding for 12 hours. then replace it with The small grinding ball, add alcohol, 350 rpm, wet grinding for 30 hours. After being ground, the glass powder is filtered and dried through a 300-mesh steel mesh to obtain medium-temperature sintered glass powder. Take glass powder to make slurry, and get good ohmic contact performance, such as used in SrTiO 3 When the ohmic paste of the varistor is used, the ohmic contact resistance after sintering is 0.16MΩ, which meets the market requirements.

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

No PUM Login to View More

Abstract

The invention relates to medium temperature sintering glass powder and a preparation method of the medium temperature sintering glass powder. The medium temperature sintering glass powder comprises the following components by weight: 5-30% of SiO2, 0-20% of Bi2O3, 3-25% of TiO2, 2-50% of B2O3, 10-50% of BaO, 2-20% of Al2O3, 0-20% of ZnO and 2-20% of alkali metal oxide. The preparation method comprises the steps as follows: fully mixing the components; heating a glass melt; quenching; carrying out ball milling twice; filtering; and drying to obtain the medium temperature sintering glass powder. Compared with the prior art, the prepared glass powder does not contain lead, meets environmental protection requirements and is harmless for a human body; and after being sintered, an electronic paste prepared by the glass powder has good ohmic contact, sintering performance and weldability.

Description

technical field [0001] The invention belongs to the technical field of electronic materials, and in particular relates to a medium-temperature sintered glass powder and a preparation method thereof. Background technique [0002] SrTiO 3 The varistor is a new type of multifunctional composite electronic component developed in the late 1980s and early 1990s in the world. It is based on SrTiO 3 As the main component, add a small amount of rare earth elements and metal oxides, through ball milling, spray granulation, dry pressing molding, sintering at high temperature in a reducing atmosphere to make the crystal grain semiconducting, and heat treatment at low temperature in the air to insulate the grain boundary. Slurry is made by burning electrodes, measuring and other processes. [0003] SrTiO 3 The varistor has both capacitance and pressure-sensitivity composite functions. Low sensitive voltage; excellent nonlinear coefficient; large capacitance; at the same time, it has ...

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 Patents(China)
IPC IPC(8): C03C12/00
Inventor 胡晓斌焦伟雄
Owner SHANGHAI JIAOTONG UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com