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

Method for preparing copper/molybdenum composite board with molybdenum fibers by accumulative roll bonding

A composite board and fiber technology, which is applied in chemical instruments and methods, lamination devices, lamination and other directions, can solve the problems of preparing molybdenum fiber copper/molybdenum composite boards without mentioning lamination, and achieves high yield and high production efficiency. Simple process and improved conductivity

Active Publication Date: 2012-07-04
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
View PDF4 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above technical information on the preparation of copper / molybdenum composite boards, it can be seen that although some key technologies have reached maturity, none of them mentioned the preparation of molybdenum fiber copper / molybdenum composite boards by stack rolling.

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 preparing copper/molybdenum composite board with molybdenum fibers by accumulative roll bonding
  • Method for preparing copper/molybdenum composite board with molybdenum fibers by accumulative roll bonding
  • Method for preparing copper/molybdenum composite board with molybdenum fibers by accumulative roll bonding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: Preparation of copper / molybdenum composite board with low molybdenum fiber density

[0027] see figure 1 , the preparation of copper / molybdenum composite board with low molybdenum fiber density is implemented according to the following steps:

[0028] 1. Preparation of molybdenum plate and copper plate

[0029] Take industrial pure molybdenum blanks, roll them into 0.5mm-2.5mm molybdenum plates under the condition of 1000℃~1350℃, carry out heat treatment, and cool with the furnace;

[0030] Take the industrial pure copper plate, the thickness of the copper plate is: 2.0mm ~ 6.0mm, put it in the annealing furnace, anneal at 600 ℃ for 1 hour, and cool with the furnace;

[0031] Grind the surface of the above-mentioned molybdenum plate and copper plate with a water grinder to make the surface roughness Ra≤7~8μm; and clean the polished surface with acetone to remove oil stains, oxides and impurities on the surface of the molybdenum plate and copper plate, and u...

Embodiment 2

[0037] Example 2: Preparation of copper / molybdenum composite board with high molybdenum fiber density

[0038] This embodiment is prepared according to the process in Example 1, the difference is that in repeating the operation from step 1 to step 5, it is necessary to carry out 8 to 10 passes of cumulative rolling, and then perform the heat treatment of step 6, that is A copper / molybdenum composite board with a higher molybdenum fiber density is obtained.

[0039] After testing, the longitudinal tensile strength of the copper / molybdenum composite board prepared in the above embodiment is 180-360 MPa, the transverse tensile strength is 390-620 MPa, and the elongation is 25%-45%. Subsequent selective rolling or shearing can be done according to the required size.

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
Total thicknessaaaaaaaaaa
Longitudinal tensile strengthaaaaaaaaaa
Transverse tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing a copper / molybdenum composite board with molybdenum fibers by accumulative roll bonding. In the copper / molybdenum composite board with molybdenum fibers, prepared by the method, molybdenum is fractured to be in a fibrous form by accumulative roll bonding, and then is pinned in a copper plate, and the density of molybdenum fiber can be controlled by accumulative roll bonding passes; and the preparation comprises pretreatment, hot rolling bonding, accumulative roll bonding, finished product annealing and follow-up processing. In the copper / molybdenum composite board with molybdenum fibers, prepared by the method, the copper / molybdenum composite board with different molybdenum fiber densities can be prepared by accumulative roll bonding, and during rolling, a copper-molybdenum interface does not crack, and has no oxidization phenomenon during heat treatment under an argon or hydrogen protective condition, and the prepared composite board has the advantages that the longitudinal tensile strength is 180-360MPa, the transverse tensile strength is 390-620MPa, the elongation rate is 25%-45% and the heat expansion coefficient is controllable. The method has the characteristics of simple preparation process, strong controllability and high yield, and has the most remarkable advantage of being used for large-scale production.

Description

technical field [0001] The invention relates to the preparation of composite materials, in particular to a method for preparing molybdenum fiber copper / molybdenum composite boards by stack rolling. Background technique [0002] With the continuous development of electronics, information, energy, automobile and other industrial technologies, more and more attention has been paid to functional metal matrix composites, with broad application prospects. This material needs to have high mechanical properties and physical properties such as high thermal conductivity, low thermal expansion, and high electrical conductivity. Copper / molybdenum structural composite board has the above characteristics, so it is generally used in electronic packaging materials. Metal matrix composites mainly include metal matrix composites reinforced with high-performance reinforcing fibers, whiskers, particles, etc.; in-situ self-generated reinforced composites in metal matrix, laminated metal matrix ...

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): B32B15/01B32B37/06B32B37/10
Inventor 王快社张兵王峰王文林兆霞孔亮
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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