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

Enhanced self-lubricating copper-based composite material and preparation method and application thereof

A copper-based composite material and self-lubricating technology, which is applied in the field of reinforced copper-based composite materials and its preparation, can solve the problems of high cost, uneven material density, complicated process and equipment, etc., and achieve good mechanical and wear resistance, The process and equipment are simple and the effect of saving preparation cost

Active Publication Date: 2019-01-04
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above work is based on TiB 2 Or TiN particles as raw materials, due to the difference in particle density and the agglomeration of ceramic particles during the mixing process, it is easy to cause uneven density of the material and affect the performance of the composite material
Although the method of using ceramic prefabricated blocks can avoid the influence of ceramic particle agglomeration, it needs to prepare ceramic prefabricated blocks, the process and equipment are relatively complicated, and the cost is high, so it has great limitations in large-scale production.

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
  • Enhanced self-lubricating copper-based composite material and preparation method and application thereof
  • Enhanced self-lubricating copper-based composite material and preparation method and application thereof
  • Enhanced self-lubricating copper-based composite material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] First weigh 5g of boron nitride powder with a median particle size of 0.5μm, 14g of pure titanium powder with a median particle size of 40μm, and 14g of pure copper powder with a median particle size of 40μm, add 40g of absolute ethanol, and roll ball mill for 3 hours , to obtain a uniform and stable slurry; then dry at 50-80°C for 2 hours, and sieve to obtain a mixture powder; place the mixture powder in a graphite crucible and sinter in a self-propagating sintering furnace to obtain a composite precursor powder; then pour the composite precursor powder into a hot-pressing mold for hot-pressing sintering at a sintering temperature of 900°C for 1 hour and a hot-pressing pressure of 25 MPa to obtain the desired self-lubricating copper-based composite material.

[0051] The powder morphology of the composite precursor powder prepared in this example is shown in figure 1 shown, phase composition see figure 2 shown. From figure 1 It can be seen that there are no exposed f...

Embodiment 2

[0053] First weigh 6g of boron nitride powder with a median particle size of 0.5μm, 14g of pure titanium powder with a median particle size of 40μm, and 24g of pure copper powder with a median particle size of 40μm, add 40g of absolute ethanol, and roll ball mill for 3 hours , to obtain a uniform and stable slurry; then dry at 50-80°C for 2 hours, and sieve to obtain a mixture powder; place the mixture powder in a graphite crucible and sinter in a self-propagating sintering furnace to obtain a composite precursor powder; then pour the composite precursor powder into a hot-pressing mold for hot-pressing sintering at a sintering temperature of 900°C for 1 hour and a hot-pressing pressure of 25 MPa to obtain the required self-lubricating copper-based composite material.

[0054] The powder morphology of the composite precursor powder prepared in this example is shown in image 3 shown, phase composition see Figure 4 shown. From image 3 It can be seen that there are a certain...

Embodiment 3

[0056] First weigh 5g of boron nitride powder with a median particle size of 0.5μm, 14g of pure titanium powder with a median particle size of 40μm, and 14g of pure copper powder with a median particle size of 40μm, add 40g of absolute ethanol, and roll ball mill for 3 hours , to obtain a uniform and stable slurry; then dry at 50-80°C for 2 hours, and sieve to obtain a mixture powder; then dry-press the prepared mixture powder, and the dry-press pressure is 20MPa; dry-press the blank The body is subjected to cold isostatic pressing at a pressure of 200 MPa; the body after cold isostatic pressing is subjected to self-propagating sintering to obtain a reinforced self-lubricating copper matrix composite.

[0057] The surface morphology of the composite material obtained in this embodiment is shown in Figure 5 shown, from Figure 5 It can be seen from the figure that the density of the composite material is high, showing a continuous Cu phase, but still a small amount of discret...

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 an enhanced self-lubricating copper-based composite material and a preparation method and application thereof. The preparation method comprises the steps that titanium powder,boron nitride powder, copper powder and / or copper-based alloy powder serve as raw materials and are uniformly mixed, and then self-propagating sintering is adopted to prepare precursor powder; the precursor powder is subjected to pressureless sintering or hot-pressing sintering to obtain the reinforced self-lubricating copper-based composite material. Compared with the prior art, the enhanced self-lubricating copper-based composite material with TiB2 / TiN as a binary reinforced phase and BN as a self-lubricating medium is provided, and the material has the high hardness and high abrasion resistance characteristics of TiB2 / TiN and the high heat conductivity characteristic of pure copper or copper-based alloy.

Description

technical field [0001] The present invention relates to a kind of reinforced self-lubricating copper-based composite material and its preparation method and application, in particular, relates to a TiB 2 / TiN is a binary reinforcement phase, a reinforced copper matrix composite material with BN as a self-lubricating medium, its preparation method and application. Background technique [0002] Copper and its alloy materials have excellent electrical and thermal conductivity, and are usually used as friction parts, heat dissipation parts, and conductive parts in various mechanical and electrical systems. However, due to its low hardness, high density, and poor wear resistance under high temperature and high speed conditions, its application in high-performance automobiles, aircraft, high-speed trains, and advanced weapon systems is limited. Ceramic phase reinforced copper matrix composites (CMMCs) is a kind of composite material with comprehensive properties of metal and non-...

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): C22C1/05C22C9/00C22C30/02C22C32/00
CPCC22C1/058C22C9/00C22C30/02C22C32/0068
Inventor 尹金伟曾宇平左开慧夏咏锋姚冬旭梁汉琴
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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