Preparation method of Ti-AL-Ti multi-layer laminated composite material

A layered composite material and composite material technology, applied in the field of preparation of Ti-Al-Ti multilayer layered composite materials, can solve problems such as high cost, interface pollution, and unsatisfactory density, and achieve a simple and easy production process , low cost, good effect of interface combination

Inactive Publication Date: 2004-10-13
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since Ti and Al are a pair of metals with much poorer physical-chemical properties and mechanical properties, it is difficult to connect Ti and Al by fusion welding to make Ti / Al composite materials
If it is prepared by casting composite method, the capacity will produce interface pollution, and the compatibility of the interface between metals is not good; if it is prepared by explosive composite method, it is dangerous and the process is difficult to control; if it is prepared by spray deposition composite technology, the density is not ideal and the texture is not good. It is loose, and the preparation of composite materials cannot be completed at one time, and the cost is high

Method used

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  • Preparation method of Ti-AL-Ti multi-layer laminated composite material
  • Preparation method of Ti-AL-Ti multi-layer laminated composite material
  • Preparation method of Ti-AL-Ti multi-layer laminated composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Such as figure 1 , 2 As shown, Ti foil and Al foil are taken as raw materials, firstly treated by surface (cleaning), then Ti foil and Al foil are alternately stacked, and then immediately placed in a mold for vacuum hot pressing of multi-layer laminated composites. Specifically, follow the steps below:

[0026] 1) Surface treatment of raw materials: the raw materials are Ti foil (TAl) and Al foil (L3), and the original thicknesses are 110 μm and 100 μm respectively. First, use petroleum ether to scrub the oil on the surface of Ti foil and Al foil; 50°C, 10% NaOH aqueous solution alkali washing for 10 minutes, take it out, rinse with water for 5 minutes, and then put it in 30% dilute nitric acid solution for 5 minutes to neutralize the remaining alkali and avoid the alkali solution from continuing to corrode the Al matrix , then rinse with clean water and dry; use 10% HNO for Ti foil 3 - Pickling with HF aqueous solution for 15 minutes, rinsing with water for 5 minut...

Embodiment 2

[0032] The difference from Example 1 is:

[0033] 1) Scrub the oil on the surface of Ti foil and Al foil with petroleum ether; wash the Al foil with 20% NaOH aqueous solution at a temperature of 30°C for 20 minutes, take it out, rinse it with clean water for 5 minutes, and then place it in 20% dilute nitric acid Perform photochemical treatment in the solution for 10 minutes, then rinse with clean water and dry; use 15% HNO for Ti foil 3 - Pickle with HF aqueous solution for 10 minutes, rinse with water for 5 minutes, and dry;

[0034] 2) The surface-treated metal foils are alternately stacked and placed in a total of 11 layers, the uppermost and the lowermost of which are both Al foil; in order to prevent the foil from spreading, a layer of Ti foil can be wrapped outside to make a hot-pressed sample spare;

[0035] 3) During vacuum hot pressing, the pressurization speed is 0.5 tons / minute, the pressure is 60Mpa, and the pressure is kept for 2 hours; the reaction temperature ...

Embodiment 3

[0039] The difference from Example 1 is:

[0040] 1) Scrub the oil stains on the surface of Ti foil and Al foil with acetone; Al foil is washed with 20% NaOH aqueous solution at a temperature of 30°C for 20 minutes, then taken out, rinsed with water for 5 minutes, and then placed in 20% dilute nitric acid solution Carry out photochemical treatment for 10 minutes, rinse with clean water, and blow dry; use 15% HNO for Ti foil 3 - Pickle with HF aqueous solution for 10 minutes, rinse with water for 5 minutes, and dry;

[0041] 2) The surface-treated metal foils are alternately stacked and placed in a total of 41 layers, the uppermost and lowermost of which are both Al foils; when vacuum hot pressing, the pressing speed is 0.5 tons / min, the pressure is 60Mpa, and the pressure is 1 hour; the present embodiment reaction temperature is set at 635 ℃, for preventing the furnace temperature from rising too fast and exceeding the set reaction temperature, it can be kept at 70 ℃ below th...

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Abstract

The present invention relates to a preparation method of Ti-Al-Ti multilayer laminar composite material. Said method uses Ti foil and Al foil as raw material, and includes the following steps: surface cleaning treatment, alternatively superimposing Ti foil and Al foil to make them into Ti-Al-Ti laminated structure, then placing them into mould promptly to make vacuum thermal compression so as to obtain the invented multilayer laminar composite material.

Description

technical field [0001] The invention relates to a composite material preparation technology, in particular to a preparation method of a Ti-Al-Ti multilayer composite material. Background technique [0002] As an important branch of composite materials, layered composite materials occupy an important position. As early as the beginning of this century, the design of layered structures had already begun to take shape, and then developed more rapidly. In the initial stage of research, the material is basically formed by physical bonding, the interface and the matrix material are non-similar element substances, and the matrix material is a substance with similar properties, such as wooden laminates. Later, researchers began to use explosive welding and other methods to combine metal plates, achieving the purpose of interlayer bonding of layers without resorting to other substances. At present, there are many preparation methods of layered composite materials, such as casting c...

Claims

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Application Information

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IPC IPC(8): B32B15/01
Inventor 徐磊崔玉友杨锐
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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