Method for assisting brazing by carbon nanotube reinforced type three-dimensional middle layer

A carbon nanotube, three-dimensional structure technology, applied in the field of brazing ceramics and metals, can solve the problems of insufficient high temperature performance and large residual stress, and achieve the effects of improving high temperature performance, relieving residual stress and relieving residual stress.

Active Publication Date: 2017-01-25
哈尔滨工大特种连接高新科技发展股份有限公司
View PDF5 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problems of relatively large residual stress and insufficient high-temperature performance in the brazing connection

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
  • Method for assisting brazing by carbon nanotube reinforced type three-dimensional middle layer

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Specific embodiment 1: The method for assisted brazing of the intermediate layer of carbon nanotube reinforced three-dimensional structure described in this embodiment is performed according to the following steps:

[0023] 1. Wash the foamed metal with hydrochloric acid, acetone, absolute ethanol and deionized water with a concentration of 1mol / L~3mol / L for 10 minutes, and then dry naturally to obtain the pretreated foamed metal. Add the catalyst to the Obtain anhydrous ethanol solution of the catalyst with a concentration of 0.001mol / L~1mol / L in water ethanol, and immerse the pretreated metal foam in the anhydrous ethanol solution of the catalyst with a concentration of 0.001mol / L~1mol / L , Let it stand for 1h, and then dry naturally to obtain the foamed metal after soaking;

[0024] 2. Place the soaked metal foam in a plasma-enhanced chemical vapor deposition vacuum device, evacuate to a pressure of 20Pa-100Pa or less, pass in hydrogen gas, adjust the hydrogen gas flow rat...

Example Embodiment

[0036] Specific embodiment two: this embodiment is different from specific embodiment one in that: the foamed metal in step one is foamed copper or foamed nickel. Others are the same as the first embodiment.

Example Embodiment

[0037] Specific embodiment three: This embodiment is different from one of specific embodiments one or two in that the catalyst in step one is nickel nitrate hexahydrate, iron nitrate, cobalt nitrate, nickel sulfate, iron sulfate or cobalt sulfate. Others are the same as the first or second embodiment.

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
Concentrationaaaaaaaaaa
Concentrationaaaaaaaaaa
Shear strengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a method for assisting brazing by a carbon nanotube reinforced type three-dimensional middle layer, and relates to a method for brazing ceramic and metal, which aims at solving the problems of larger residual stress and insufficient high-temperature property in the existing ceramic and metal brazing connection process. The method comprises the following steps of 1, preparing soaked foam metal; 2, putting the soaked foam metal into a plasma reinforced type chemical vapor depositing vacuum device, and increasing temperature at certain pressure and hydrogen atmosphere; 3, preparing nanotube reinforced type foam metal; 4, preparing surface impurity-removed metal, surface impurity-removed brazing material foil and surface impurity-removed ceramic; 5, sequentially overlapping the surface impurity-removed to-be-brazed metal, the carbon nanotube reinforced type foam metal, the surface impurity-removed brazing material foil and the surface impurity-removed ceramic, so as to obtain a to-be-brazed part; brazing the to-be-brazed part, and cooling to room temperature. The method disclosed by the invention is used for assisting the brazing by the carbon nanotube reinforced type three-dimensional middle layer.

Description

technical field [0001] This invention relates to methods of brazing ceramics and metals. Background technique [0002] Ceramic materials are currently the materials with the best rigidity and highest hardness among engineering materials. At the same time, the coefficient of linear expansion of ceramics is lower than that of metals. When the temperature changes, ceramics have good dimensional stability; ceramic materials generally have high melting points (mostly at Above 2000℃), it is not easy to oxidize at high temperature, and has good corrosion resistance to acid, alkali and salt, has stable corrosion resistance, and its thermal conductivity is lower than that of metal materials, it is a good heat insulation material, ceramics have Many excellent high temperature performance. Ceramics can be divided into a variety of functional ceramics according to their production methods, and have been widely used in aerospace, energy transportation, power electronics, biomedicine, ch...

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): B23K1/20B23K1/008
CPCB23K1/008B23K1/20B23K1/206
Inventor 亓钧雷霸金王毅恒林景煌金宇鹏冯吉才
Owner 哈尔滨工大特种连接高新科技发展股份有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap