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High-flux preparation method for preparing metal diffusion couple with large melting point difference

A technology for metal diffusion and low-melting-point metals, which is applied in the high-throughput preparation of materials genome engineering and the field of preparing diffusion couples, can solve the problem of no high-melting-point metals being found, and achieve easy visualization of the preparation process, simple preparation methods, and less metal content Effect

Active Publication Date: 2019-12-24
云南贵金属实验室有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In the preparation method of current diffusion couple, do not find the refractory metal (expressed as A) that the present invention provides i , i represents a certain metal) and low melting point metal (expressed as B j , j represents a certain metal) composed of a diffusion couple (expressed as A i \B j Even) preparation method and report

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Put A (pure Sn) and B (pure W) metal wires with a length of 2cm and the same diameter (1mm) into the bottom seal with an inner diameter of 1.1mm and a wall thickness of 1mm in the order of B on the bottom and A on the top placed vertically in a quartz tube;

[0019] (2) After the A / B diffusion couple is placed, place a quartz column with a length of 5 cm and a diameter of 1 mm above the diffusion couple to apply a certain pressure on the contact surface of the diffusion couple.

[0020] (3) Use vacuum equipment to evacuate the quartz tube to a high vacuum and flush 99.99% argon 4 times. The specific process is: the pre-vacuum degree is -3 Pa, then rush into 99.99% argon with a pressure of 1.0 atmospheres, and finally keep a certain vacuum degree of 1×10 -3 Pa. Fix the quartz tube and place it vertically;

[0021] (5) Use an electric soldering iron to heat the A\B diffusion couple from bottom to top on the quartz tube, especially to melt the low melting point metal...

Embodiment 2

[0024] (1) The length is 2cm and the same diameter (3mm): A 1 (pure Sn), B 1 (pure Cu) wire, A 2 (Pure Al), B 2 (Pure Ni) metal wire, metal wire according to Bi 1 under A i In the order above (i=1,2), the B j \A i Put it into a vertically placed quartz tube with an inner diameter of 3.1mm and a wall thickness of 1mm;

[0025] (2) in B j \A i A quartz column with a diameter of 3 mm and a length of 4 cm is placed between the couples to separate the diffusion couples;

[0026] (3) After the diffusion couple is placed, finally place a quartz column with a diameter of 3 mm and a length of 4 cm with the quartz tube, so that the pressure applied to the sample can be adjusted.

[0027] (4) Use vacuum equipment to evacuate the quartz tube to a high vacuum and flush 99.99% argon 4 times. The specific process is: the pre-vacuum degree is -3 Pa, then rush into 99.99% argon with a pressure of 1.0 atmospheres, and finally keep a certain vacuum degree of 1×10 -3 Pa. Fix the quartz...

Embodiment 3

[0031] (1) The length is 5cm and the same diameter (10mm): A 1 (pure Sn), B1 (pure Cu) metal rod; A 2 (Pure Pb), B 2 (pure Al) metal rod; A 3 (Pure Al), B 3 (pure Mo) metal rod. Metal Rod Press Bi 1 under A i In the order above (i=1,2), the B j \A i Put it into a vertically placed quartz tube with an inner diameter of 10.1mm and a wall thickness of 1mm;

[0032] (2) Each pair of Aces i \B j A quartz column with a length of 4 cm and a diameter of 10 mm is placed between the couples to separate the diffusion couples;

[0033] (3) After the diffusion couple is placed, finally place a quartz column with a diameter of 10 mm and a length of 4 cm with the quartz tube, so that the pressure applied to the sample can be adjusted.

[0034] (4) Use vacuum equipment to evacuate the quartz tube to a high vacuum and flush 99.99% argon 4 times. The specific process is: the pre-vacuum degree is -3 Pa, then rush into 99.99% argon with a pressure of 1.0 atmospheres, and finally keep a...

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Abstract

The invention discloses a high-flux preparation method for preparing a metal diffusion couple with large melting point difference. Through the method disclosed by the invention, a diffusion couple (shown as Ai\Bj couple) composed of high-melting point metal and low-melting point metal is mainly prepared, and multiple Ai\Bj couples composed of different high melting point metals and low melting point metals can be prepared at a time as required. The preparation method comprises the following steps: placing Ai and Bj metal wires or rods processed into a certain length and same diameter in a quartz tube, vertically placing the quartz tube, heating to form a certain metallurgical bond at metal interfaces of the Ai and Bj, thereby preparing Ai\Bj diffusion couple. The preparation method disclosed by the invention is simple, the amount of required metal is small, the preparation process is visible and easy to control, the combination of the diffusion couple is very flexible and controllable,the high-flux preparation of the diffusion couple can be realized, and the effect is excellent; and the method is suitable for high-throughput experimental research and is very suitable for the research and application of metal materials which are high in melting point, low in melting point, easy to volatilize and easy to oxidize.

Description

technical field [0001] The invention relates to a high-throughput preparation method for preparing a metal diffusion couple with a large difference in melting point, which belongs to the method for preparing a diffusion couple in the fields of metal materials, phase diagram research, composite materials, brazing, etc., and also belongs to the high-throughput method in material genome engineering A kind of mass production technology. This method is mainly used in the related fields of preparing metal diffusion couples with large melting point differences, mainly including welding, brazing, phase diagram determination, composite materials, diffusion data measurement and other fields. [0002] technical background [0003] Diffusion couples first appeared in the research of materials and metallurgy science. Generally, a diffusion couple refers to a sample in which two materials are metallurgically bonded together by diffusion, and diffuse in a direction perpendicular to the met...

Claims

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Application Information

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IPC IPC(8): G01N1/28
CPCG01N1/28
Inventor 陈松毕亚男王塞北谢明李爱坤陈永泰刘满门王松胡洁琼杨有才张吉明方继恒候攀陈赟马洪伟段云昭
Owner 云南贵金属实验室有限公司
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