Supercharge Your Innovation With Domain-Expert AI Agents!

In-situ synthesis ZrN reinforced copper-based composite material and preparation method and application thereof

A technology of in-situ synthesis of copper-based composite materials, applied in the direction of electrode characteristics, can solve the problems of low hardness and wear resistance of copper-based composite materials and limit the application of copper-based composite materials, and achieve the goal of improving hardness and wear resistance Effect

Inactive Publication Date: 2018-06-01
HUBEI UNIV OF TECH
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the hardness and wear resistance of copper-based composites obtained through dispersion strengthening are still low, which limits the application of copper-based composites in the field of spot welding electrodes

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
  • In-situ synthesis ZrN reinforced copper-based composite material and preparation method and application thereof
  • In-situ synthesis ZrN reinforced copper-based composite material and preparation method and application thereof
  • In-situ synthesis ZrN reinforced copper-based composite material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] The invention provides a preparation method for in-situ synthesis of ZrN reinforced copper-based composite materials, comprising the following steps:

[0029] (1) The zirconium powder is ball milled under a nitrogen atmosphere to obtain a ZrN precursor;

[0030] (2) the ZrN precursor that described step (1) is obtained and pure copper powder are carried out wet ball milling, obtain mixture;

[0031] (3) The mixture obtained in the step (2) is sequentially dried, cold-pressed, sintered and calcined to obtain an in-situ synthesized ZrN reinforced copper-based composite material.

[0032] In the invention, zirconium powder is ball-milled under a nitrogen atmosphere to obtain a ZrN precursor. In the present invention, the particle size of the zirconium powder is preferably 100-200 mesh, more preferably 120-170 mesh, more preferably 140-170 mesh; the purity of the nitrogen gas is preferably ≥99.9%. In the present invention, the molar ratio of the zirconium powder to nitrog...

Embodiment 1

[0060] Weigh 10g of zirconium powder and carry out ball milling under a nitrogen atmosphere. The particle size of zirconium powder is 200 mesh, purity ≥ 99.99, and nitrogen purity ≥ 99.9%. Balloon mill zirconium powder and nitrogen for 12 hours, and control the speed of ball milling to 350 rpm. The material ratio is 10:1, the material of the grinding ball and the spherical tank is alumina, and the diameter of the grinding ball is 5mm. The ball milling process is completed under an argon protection environment with a purity greater than 99.9%, to obtain a ZrN precursor.

[0061] 0.5g of ZrN precursor and 49.5g of pure copper powder with a particle size of 200 mesh were ball milled for 10 hours in a ball milling speed of 120 rpm, a ball-to-material ratio of 2:1, and an anhydrous ethanol medium to obtain a mixture. The material is alumina, and the diameter of the grinding ball is 5mm.

[0062] The ball-milled mixture was dried at 80° C. for 24 hours under a pressure of 0.01 MPa....

Embodiment 2

[0068] Weigh 10g of zirconium powder and carry out ball milling under a nitrogen atmosphere. The particle size of the zirconium powder is 200 mesh, the purity is ≥99.99, and the nitrogen purity is ≥99.9%. Ball mill the zirconium powder and nitrogen for 18 hours, and control the speed of the ball mill to 400 rpm. The material ratio is 20:1, the material of the grinding ball and the spherical tank is alumina, and the diameter of the grinding ball is 5mm. The ball milling process is completed under an argon protection environment with a purity greater than 99.9%, to obtain a ZrN precursor.

[0069] 1g of ZrN precursor and 49g of pure copper powder with a particle size of 200 mesh were ball milled for 8 hours in a ball milling speed of 150 rpm, a ball-to-material ratio of 4:1, and an anhydrous ethanol medium to obtain a mixture, and the materials of the balls and the spherical tank were Aluminum oxide, the diameter of the grinding ball is 5mm.

[0070] The ball-milled mixture was...

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
Diameteraaaaaaaaaa
Lengthaaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method of an in-situ synthesis ZrN reinforced copper-based composite material. The preparation method comprises the steps that Zr powder is subjected to ball grinding in the nitrogen atmosphere to obtain a ZrN precursor; then the ZrN precursor and pure copper powder are subjected to wet ball grinding to obtain a mixture; and the obtained mixture is subjected todrying, cold-pressing formation, sintering and calcining in sequence to obtain the in-situ synthesis ZrN reinforced copper-based composite material. The invention further provides the in-situ synthesis ZrN reinforced copper-based composite material obtained according to the preparation method, and application of the in-situ synthesis ZrN reinforced copper-based composite material obtained according to the preparation method as a spot welding electrode material. By means of the method, the hardness and abrasion resistance of the ZrN reinforced copper-based composite material are effectively improved. Results of the embodiment prove that the hardness of the ZrN reinforced copper-based composite material prepared according to the method is higher than 180 HV, and the service life of the electrode is up to 2650 spots.

Description

technical field [0001] The invention belongs to the technical field of metal-based composite materials, and mainly relates to in-situ synthesis of ZrN reinforced copper-based composite materials and its preparation method and application. Background technique [0002] Resistance spot welding is currently the main method of body production. According to statistics, the cost of spot welding is 5 cents, and the production of a passenger car needs to weld 3000 points, the cost is 150 US dollars, and 1 / 2-3 / 4 of the cost comes from the use and loss of spot welding electrodes. On the car body assembly line, a car needs to be welded with 7000-12000 points. During the spot welding process, the spot welding electrode has to bear the action of mechanical force and heat repeatedly, and plastic deformation will inevitably occur. The low electrode hardness and poor wear resistance will lead to severe plastic deformation. The direct result of the plastic deformation of the electrode will...

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): C22C1/05C22C9/00C22C32/00B22F3/02B22F3/10B22F3/17B23K11/30
Inventor 罗平董仕节汤臣张艳华蓝彬栩陈晨王义金胡东伟夏露肖瑶李智覃富城王冲杨祺邓宇鑫张海一晁飞扬王书文徐小涵张佳琪陈岗方泽成邵轩宇夏宇欣左雨菲丁文祥易少杰陈成
Owner HUBEI UNIV OF TECH
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