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

Sn-based brazing filler metal used for SiC ceramic braze welding and preparation method thereof

A technology of brazing and ceramics, which is applied in the field of composite solder preparation technology, can solve the problems of large residual stress of SiC ceramic welding joints, poor wetting performance between solder and base metal, and complicated preparation process, and achieve simple and easy operation of process equipment , good wettability and high mechanical properties

Active Publication Date: 2020-05-15
NORTHEAST GASOLINEEUM UNIV
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] An object of the present invention is to provide a kind of Sn-based brazing filler metal for SiC ceramic brazing, this Sn-based brazing filler metal for SiC ceramic brazing is used to solve traditional composite solder preparation process complexity, brazing filler metal and base material The problem of poor wettability, and also solve the problem that the residual stress of SiC ceramic welding joints is large, another object of the present invention is to provide the preparation method of this Sn-based solder for SiC ceramic brazing

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
  • Sn-based brazing filler metal used for SiC ceramic braze welding and preparation method thereof
  • Sn-based brazing filler metal used for SiC ceramic braze welding and preparation method thereof
  • Sn-based brazing filler metal used for SiC ceramic braze welding and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Below in conjunction with accompanying drawing, the present invention will be further described:

[0019] This Sn-based solder for SiC ceramic brazing is a composite solder prepared from a foamed aluminum alloy skeleton and a filler alloy. The filler alloy is composed of pure aluminum, Sn-9Zn alloy, Zn-5Al alloy, and nano-silver wire. In terms of mass percentage, foamed aluminum alloy skeleton is 5.30%~61.20%, pure aluminum is 0.65%~13.00%, Sn-9Zn alloy is 24.70%~86.00%, Zn-5Al alloy is 0.20%~16.50%, nano silver The line is 0.002%~0.10%.

[0020] The preparation method of the above-mentioned Sn-based solder for SiC ceramic brazing:

[0021] 1. Filling alloy preparation: Weigh 0.65%~13.00% pure Al, 24.70%~86.00% Sn-9Zn alloy, 0.20%~16.50% Zn-5Al alloy and 0.002%~0.10% nano The silver wire is the raw material for the filler alloy.

[0022] 2. The skeleton of the composite brazing filler metal: cut the foamed aluminum with a wire cutting machine to obtain a foamed alumi...

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
Thicknessaaaaaaaaaa
Widthaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to Sn-based brazing filler metal used for SiC ceramic braze welding and a preparation method thereof. The Sn-based brazing filler metal used for SiC ceramic brake welding consists of the following components in percentage by mass: 5.30%-61.20% of a foam aluminum alloy framework, 0.65%-13.00% of pure aluminum, 24.70%-86.00% of Sn-9Zn alloy, 0.20%-16.50% of Zn-5Al alloy, and 0.002%-0.10% of a silver nanowire. The composite brazing filler metal takes the foam Al as a framework, and takes an Sn alloy as filling metal, so that so that residual internal stress of a braze-welding joint can be effectively reduced, and the stress problem due to the fact that the SiC ceramic welding joint uses high-temperature brazing filler metal to perform high-temperature welding is overcome.

Description

Technical field: [0001] The invention relates to the field of composite solder preparation technology, in particular to a Sn-based solder for SiC ceramic brazing and a preparation method thereof. Background technique: [0002] Due to its stable chemical properties, small thermal expansion coefficient, good wear resistance, high mechanical strength, and chemical corrosion resistance, SiC ceramics have been widely used in petroleum, chemical, aviation and aerospace fields. The sintering technology for preparing SiC ceramic materials has also become mature, but the yield of complex and large components of SiC ceramics is still very low, so the industry often adopts the method of welding small-sized SiC ceramics to form large components. It must involve the welding of SiC ceramics and SiC ceramics, and one of the difficulties faced by SiC ceramics welding is the residual stress problem at the interface between SiC ceramics and metal solder. [0003] Due to the large gap between...

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
IPC IPC(8): B23K35/26
CPCB23K35/0222B23K35/262
Inventor 马志鹏张茗瑄夏法锋于心泷夏杨嘉雯王晓冬
Owner NORTHEAST GASOLINEEUM UNIV
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