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A kind of molybdenum/titanium/silver metal layered composite material for space and preparation method thereof

A composite material and metal layer technology, applied in metal rolling, metal rolling, metal processing equipment, etc., can solve the problems of uncontrollable electroplating quality, weak coating, poor compactness, etc., and achieve good vacuum atomic oxygen resistance, Good weldability and high compactness

Active Publication Date: 2018-07-03
SHANGHAI INST OF SPACE POWER SOURCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a molybdenum / titanium / silver metal layered composite material for space and its preparation method, to solve the problem that the existing molybdenum-based silver-plated metal layered composite material has weak coating, poor compactness and poor weldability , uncontrollable electroplating quality, complex process and other issues

Method used

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  • A kind of molybdenum/titanium/silver metal layered composite material for space and preparation method thereof
  • A kind of molybdenum/titanium/silver metal layered composite material for space and preparation method thereof

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preparation example Construction

[0033] figure 2 It is a schematic flowchart of the steps of the preparation method of the molybdenum / titanium / silver metal layered composite material for space use provided by the embodiment of the present invention. refer to figure 2 , a method for preparing a molybdenum / titanium / silver metal layered composite material for space, comprising:

[0034] S21. Pretreated pure molybdenum foil, pure titanium foil and pure silver foil respectively, according to the pure silver foil, the pure titanium foil, the pure molybdenum foil, the pure titanium foil and the pure silver foil The sequence is stacked into a combined blank with a "sandwich" structure;

[0035] S22. Carry out rolling composite connection of the combined blanks in a vacuum or inert gas environment, wherein the rolling temperature is 650-750°C, the reduction rate is 10%-40%, and the rolling speed is 0.01-0.5m / s;

[0036] S23. After rolling the combined billet, further annealing treatment under an inert gas atmos...

Embodiment 1

[0041] In the molybdenum / titanium / silver metal layered composite material for space, the middle layer is a pure molybdenum foil with a thickness of 50 μm and a purity of 99.99%. The thickness of the welding layer of each layer is 20 μm, and the purity is 99.99% pure silver foil. The five layers are combined by rolling composite connection, and the Ag / Ti / Mo / Ti / Ag interface is combined by chemical metallurgy. The molybdenum / titanium / Silver metal layered composite material uses parallel resistance welding space gallium arsenide solar cells, the tensile strength of the solder joints is 6~8N, and the interface does not appear to fall off.

[0042] The operation of preparing molybdenum / titanium / silver metal layered composite materials for space is as follows: two pieces of silver foil with a thickness of 20 μm and two pieces of titanium foil with a thickness of 8 μm are respectively washed with isopropanol and semiconductor cleaning solution, namely 1# electronic cleaning solution. ...

Embodiment 2

[0044] In the molybdenum / titanium / silver metal layered composite material for space, the middle layer is a pure molybdenum foil with a thickness of 30 μm and a purity of 99.99%. The thickness of the welding layer of each layer is 20 μm, and the purity is 99.99% pure silver foil. The five layers are combined by rolling composite connection, and the Ag / Ti / Mo / Ti / Ag interface is combined by chemical metallurgy. The molybdenum / titanium / Silver metal layered composite material uses parallel resistance welding space gallium arsenide solar cells, the tensile strength of the solder joints is 6~8N, and the interface does not appear to fall off.

[0045] Two pieces of 20μm thick silver foil and two pieces of 6μm thick titanium foil were respectively used to remove oil stains on the surface of silver foil and titanium foil with isopropanol and semiconductor cleaning solution (1# electronic cleaning solution), and 25% hydrofluoric acid ( HF) aqueous solution to remove the oxide layer on th...

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Abstract

The invention relates to molybdenum / titanium / silver metal layered composite material used for space and a preparation method thereof. The composite material comprises a layer of pure molybdenum foil; two layers of pure titanium foils; and two layers of pure silver foils, wherein the foils are laminated into a similar "sandwich" structure according to the order of the pure silver foil, the pure titanium foil, the pure molybdenum foil, the pure titanium foil and the pure silver foil and connected as a whole, and the molybdenum-titanium interface and the silver-titanium interface are chemically and metallurgically bonded. The preparation method comprises the steps that a combined blank material of the similar "sandwich" structure is formed by orderly lamination; hot rolling composite connection is performed on the combined blank material, and annealing processing is further performed under the atmosphere of inert gas after hot rolling; and the molybdenum / titanium / silver metal layered composite material used for the space is obtained after annealing. The composite material has great space environment adaptability, thermal conductivity, electrical conductivity and weldability so as to meet the requirements of the space electronic packaging application; and the preparation method of the composite material realizes formation through hot rolling composite connection so that the manufacturing technology is simple, the quality is stable and controllable, operation is convenient and large-area automatic roll-to-roll batch production can be realized.

Description

technical field [0001] The invention relates to the field of aerospace equipment and methods, in particular to a molybdenum / titanium / silver metal layered composite material for space and a preparation method thereof. Background technique [0002] The development of space technology and the high cost of space launch put forward new requirements for the normal on-orbit operation life of spacecraft. Due to the harsh space environment, the effect on the surface materials of the spacecraft is complex and changeable. The solar cell array working on the surface of the spacecraft for a long time will be eroded by high-energy particles, micro-meteorites, space debris, atomic oxygen, etc., which will affect the normal life of the aircraft on orbit. . [0003] The solar cell array is an array formed by connecting single gallium arsenide solar cells in series through metal interconnections. At present, the interconnection metal materials used in space solar cell arrays are mainly pure ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/05H01L31/18B21B1/40B21B9/00B21B45/02B21B45/04B21B47/00
CPCB21B1/40B21B9/00B21B45/0269B21B45/04B21B47/00H01L31/0512H01L31/188Y02E10/50Y02P70/50
Inventor 范襄吴庆陈萌炯池卫英雷刚徐建文沈斌顾永斌
Owner SHANGHAI INST OF SPACE POWER SOURCES
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