Supercharge Your Innovation With Domain-Expert AI Agents!

Preparation method of BN/Cu composite material with low friction coefficient

A low friction coefficient, composite material technology, applied in the field of preparation of BN/Cu composite materials with low friction coefficient, to achieve good wear resistance, improve friction and wear performance, and high hardness

Active Publication Date: 2019-01-29
YIZHENG CHANGDA POWDER METALLURGY PROD CO LTD
View PDF1 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the application of copper-based composite materials more and more widely, the requirements for its performance are getting higher and higher. The copper-based composite materials with high electrical conductivity, high strength and high wear resistance cannot meet the existing needs.

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
  • Preparation method of BN/Cu composite material with low friction coefficient
  • Preparation method of BN/Cu composite material with low friction coefficient
  • Preparation method of BN/Cu composite material with low friction coefficient

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] The invention provides a kind of preparation method with low friction coefficient BN / Cu composite material, specifically comprises the following steps:

[0022] Step 1, mechanically mixing copper powder and boron nitride powder according to a certain ratio to obtain mixed powder;

[0023] Step 2, cold pressing the mixed powder in step 1 into a billet;

[0024] Step 3, hot-pressing and sintering the billet formed by cold pressing, and then cooling down with the furnace to obtain a BN / Cu composite material.

[0025] Wherein, in step 1, the boron nitride powder and copper powder are loaded into the mixer according to a certain ratio, wherein the boron nitride powder accounts for 0.5-2% of the total mass of the BN / Cu composite material, and then the copper powder and the nitrided 1:1 of the total mass of the boron powder was added to stainless steel grinding balls, and 1% of the total mass of the powder was added to the mixer as an anhydrous ethanol as a binder, and the po...

Embodiment 1

[0034] Weigh 1.5wt.% of nano-scale boron nitride powder, the balance is copper powder (40-60μm), put it into a mixer, and then add stainless steel grinding balls according to the total mass of copper powder and boron nitride powder at 1:1 , and add 1% of the total mass of powder to the mixer as an anhydrous ethanol as a binder, and mix the powder for 4 hours at a speed of 120r / min to obtain a mixed powder; the mixed powder is cold-pressed into a billet with a cold-pressing mold, and the cold-pressed During the process, the pressure is 300MPa, and the holding time is 30s, and the billet is cold-pressed into a billet; the billet formed by cold pressing is put into a Φ21 graphite crucible, and then put together into an atmosphere-protected hot-press furnace, and the temperature is raised from room temperature to 900 °C at 20 °C / min. ℃, hold for 30min, then heat at 10°C / min to 1040°C, hold for 50min, pressurize 21MPa, and finally cool to room temperature with the furnace to prepare...

Embodiment 2

[0036] Weigh 0.5wt.% of nano-scale boron nitride powder, the balance is copper powder (40-60μm), put it into a mixer, and then add stainless steel grinding balls according to the total mass of copper powder and boron nitride powder at 1:1 , and add 1% of the total mass of powder to the mixer as an anhydrous ethanol as a binder, and mix the powder for 4 hours at a speed of 120r / min to obtain a mixed powder; the mixed powder is cold-pressed into a billet with a cold-pressing mold, and the cold-pressed During the process, the pressure is 300MPa, and the holding time is 30s, and the billet is cold-pressed into a billet; the billet formed by cold pressing is put into a Φ35 graphite crucible, and then put together into an atmosphere-protected hot-press furnace, and the temperature is raised from room temperature to 900 °C at 20 °C / min. ℃, hold for 30min, then heat at 10°C / min to 1000°C, hold for 30min, pressurize 7MPa, and finally cool to room temperature with the furnace to prepare ...

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
Sizeaaaaaaaaaa
Conductivityaaaaaaaaaa
Conductivityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of BN / Cu composite material with a low friction coefficient. The preparation method specifically comprises the following steps that 1, copper powder and boron nitride powder are mechanically mixed according to a certain proportion, and mixed powder is obtained; 2, cold pressing is carried out on the mixed powder obtained in the step 1 to form a blank; and 3, hot pressing sintering is carried out on the blank formed by cold pressing, then cooling is carried out along with the furnace, and the BN / Cu composite material is obtained. According to the preparation method, the friction abrasion performance of the BN / Cu composite material is improved, fine copper is replaced with boron nitride, the BN / Cu composite material prepared by the hot-pressing sintering method is uniform in structure distribution, the friction coefficient is reduced by 40%-47% compared with the fine copper, and the hardness of the composite material is high; and the frictioncoefficient is reduced, the wear rate of the alloy is relatively small, the wear resistance is good, and the method can be applied to the fields of friction anti-friction materials, electrical contactmaterials and mechanical part materials.

Description

technical field [0001] The invention belongs to the technical field of metal material preparation methods and relates to a preparation method of BN / Cu composite material with low friction coefficient. Background technique [0002] Copper-based composite materials are typical face-centered metals with good plastic deformation ability and excellent electrical and thermal conductivity. Adding high-strength materials such as particles, whiskers, and fibers to the copper matrix can not only maintain the electrical and thermal conductivity of copper , and can improve the hardness, wear resistance and high temperature creep resistance of copper to meet the needs of other industrial fields related to electronics, electrical appliances and electrical conductivity. With the application of copper-based composite materials more and more widely, the requirements for its performance are getting higher and higher. The copper-based composite materials with high electrical conductivity, high...

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): C22C1/05C22C9/00
CPCB22F2998/10C22C1/05C22C9/00B22F3/02B22F3/14
Inventor 邹军涛雷艺石浩陈玉莹梁淑华姜伊辉
Owner YIZHENG CHANGDA POWDER METALLURGY PROD CO LTD
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