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
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  • 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

Method used

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  • 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
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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.

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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

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Application Information

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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
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