Copper-based aerogel enhanced copper alloy and preparation method thereof

An aerogel-enhanced technology, which is applied in the field of copper-based aerogel-enhanced copper alloys and their preparation, can solve the problems of rare research and difficulty in uniform dispersion, and achieve good wear resistance and hinder dislocation movement and grain boundary slip, reducing friction coefficient and wear rate

Inactive Publication Date: 2019-04-09
BEIJING HONGWEINAJIN SCIENTIFIC & TECHNOLOGICAL CO LTD
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since n-SiO 2 It is very easy to agglomerate, and it is not easy to disperse uniformly in the copper matrix, resulting in the prepared SiO 2 Enhanced properties of copper matrix composites and Cu / Al 2 o 3 Compared with composite materials, there is no advantage, so n-SiO 2 There are not many studies on copper matrix as a reinforcing phase

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
  • Copper-based aerogel enhanced copper alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] The preparation method of the copper-based aerogel-enhanced copper alloy of the present invention includes the following steps: batching, high-energy ball milling, mixing, cold pressing, pressure sintering and finished products. The specific process steps include:

[0027] (1) High-energy ball milling: the weighed electrolytic copper powder (average particle size≤74μm, purity≥99.9wt%), nanometer SiO 2 (The average particle size is 20-40nm) is placed in a planetary high-energy ball mill for pre-ball milling for 2 to 4 hours.

[0028] (2) Raw material mixing: copper-nano-SiO after ball milling 2 Mixed powder, atomized zinc powder (average particle size 40-50μm, purity ≥98wt%), micron SiO 2 (The average particle size is 40-50μm, and the moisture content is ≤1wt%) and mixed in a small V-shaped mixer for 3-5h; the quality of the raw materials used in the examples is the same as above.

[0029] (2) Cold forming: the powder is pressed into a density of 4~5g / cm in a steel mold of Ф26m...

Embodiment 1

[0032] The production process method is as follows: batching, ball milling, mixing, cold pressing, pressure sintering and finished products.

[0033] The specific process is: according to the ingredients shown in Table 1: zinc: 5%, aerogel (SiO 2 ): 5%, the balance is copper. Combine copper and nano SiO 2 The mixed powder is ball milled in a high-energy ball mill for 3 hours, and then mixed with other raw materials in a small V-shaped mixer for 3 hours; The powder is pressed into a steel mold with a density of 4g / cm 3 The compact is sintered in a bell furnace at 1.0MPa pressure, the sintering temperature is 980℃, the average heating rate is 6℃ / min, and the reducing protective atmosphere is used during the sintering process. The sintering time is 40min. The furnace is cooled to room temperature in a protective atmosphere to make a finished product. The properties of the finished product are shown in Table 2.

Embodiment 2

[0035] The production process of the copper-based aerogel enhanced copper alloy is as follows: batching, ball milling, mixing, cold pressing, pressure sintering and finished products.

[0036] The specific process is: according to the ingredients shown in Table 1: zinc: 2%, aerogel (SiO 2 ): 3%, the balance is copper. Combine copper and nano SiO 2 The mixed powder is ball milled in a high-energy ball mill for 2 hours, and then mixed with other raw materials in a small V-shaped mixer for 5 hours; The powder is pressed into a steel mold with a density of 4.2g / cm 3 The compact is sintered in a bell furnace at a pressure of 2.5 MPa, the sintering temperature is 900 ℃, the average heating rate is 5 ℃ / min, the hydrogen reducing protective atmosphere is used during the sintering process, and the sintering time is 35 min. Finally, the furnace is cooled to room temperature under a protective atmosphere to make a finished product. The properties of the finished product are shown in Table ...

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
densityaaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a copper-based aerogel enhanced copper alloy and a preparation method thereof, and belongs to the technical field of metal materials and preparation thereof. The copper-based aerogel reinforced copper alloy comprises, by mass, 0.5%-10% of zinc, 2%-8% of silicon dioxide and the balance copper. The preparation method comprises the following steps of burdening, ball milling, material mixing, cold pressing forming, pressure sintering and finished products. According to the copper-based aerogel enhanced copper alloy, the tensile strength of the prepared copper-based composite material is higher than 300 MPa, the yield strength is equivalent to that of a common copper-based aluminum oxide composite material, the wear rate is lower than 1*10<-9>cm<3>.J<-1>, the heat resistance coefficient is higher than 35000, and the heat resistance and the wear resistance can be better than those of the copper-based aluminum oxide composite material, so that the wear-resistant part made of the material can meet the requirements of long-term normal operation of products or equipment under the condition of high temperature.

Description

Technical field [0001] The invention relates to the technical field of metal materials and their preparation, in particular to a copper-based aerogel reinforced copper alloy and a preparation method thereof. Background technique [0002] Due to its good electrical conductivity, thermal conductivity, corrosion resistance and wear resistance, copper alloys are used as electrical and thermal conductive parts, brakes and braking devices for construction machinery in many fields such as integrated circuits, transportation, aerospace, aviation, and ships. Domestic and foreign research on copper-based composite materials used at high temperatures has a long history, and industrialized products such as copper-based composite oxides, carbides, borides and nitrides have been formed. [0003] With the development of equipment in the direction of high speed and heavy load, higher requirements are put forward for the wear resistance and heat resistance of copper-based friction materials. The r...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/04C22C9/00C22C32/00C22C1/05C22C1/10
CPCC22C1/05C22C9/00C22C9/04C22C32/0021
Inventor 李光武王强松王朝辉杨书瑜胡保军
Owner BEIJING HONGWEINAJIN SCIENTIFIC & TECHNOLOGICAL CO LTD
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