A kind of connection method of palladium-based alloy thin film and porous stainless steel carrier

A palladium-based alloy and connection method technology, applied in welding equipment, metal processing equipment, welding/welding/cutting items, etc., can solve the problem of affecting the connection strength and bonding rate of composite membranes, affecting the hydrogen permeability of composite membranes, and local pressure loading No more problems, achieve high density, good deformation ability, and ensure effective welding effect

Active Publication Date: 2022-06-28
XIAN TIANLI CLAD METAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, from the perspective of material connection, there are many technical difficulties in the connection between large-scale films and macroscopic bulk materials, such as uneven pressure loading, or even partial pressure loading, which affects the connection strength and bonding rate of the composite film; During the connection process, the chemical composition of the palladium-based alloy film is changed, which affects the subsequent hydrogen permeability of the composite film; the deformation control of heterogeneous metal composite components, etc.

Method used

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  • A kind of connection method of palladium-based alloy thin film and porous stainless steel carrier
  • A kind of connection method of palladium-based alloy thin film and porous stainless steel carrier
  • A kind of connection method of palladium-based alloy thin film and porous stainless steel carrier

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Effect test

Embodiment 1

[0041] The palladium composite membrane in this embodiment is formed by connecting a Pd77Ag23 thin film and a 316L porous stainless steel carrier, wherein the thickness of the Pd77Ag23 thin film is 20 μm, and the thickness of the 316L porous stainless steel carrier is 0.1 mm.

[0042] The connection method of the Pd77Ag23 film of the present embodiment and the 316L porous stainless steel carrier comprises the following steps:

[0043] Step 1. Prepare the pressure transmission material: choose TSX-1260 aluminum silicate fiber paper with a thickness of 2mm, sandwich the aluminum silicate fiber paper between the polished and polished quartz glass, and place it in an electric furnace for sintering , the temperature in the electric furnace was raised to 540 °C, then kept for 40 minutes, and then cooled to 150 °C with the furnace to get the pressure transfer material;

[0044] Step 2, pressing: place the pressure-transmitting material obtained in step 1 on the upper surface of the g...

Embodiment 2

[0049] The palladium composite membrane in this embodiment is formed by connecting a Pd90Y10 thin film and a 304 porous stainless steel carrier, the thickness of the Pd90Y10 thin film is 15 μm, and the thickness of the 304 porous stainless steel carrier is 0.15 mm.

[0050] The connection method of the Pd90Y10 film of the present embodiment and the 304 porous stainless steel carrier comprises the following steps:

[0051] Step 1. Prepare pressure transmission materials: choose TSX-1400 aluminum silicate fiber paper with a thickness of 2mm, sandwich the aluminum silicate fiber paper between the polished and polished quartz glass, and place it in an electric furnace for sintering , the temperature in the electric furnace was raised to 580 °C, then kept for 60 minutes, and then cooled to 120 °C with the furnace to get the pressure transfer material;

[0052] Step 2, pressing: place the pressure-transmitting material obtained in step 1 on the upper surface of the ground and polish...

Embodiment 3

[0057] The palladium composite membrane in this embodiment is formed by connecting a Pd60Cu40 thin film and a 316L porous stainless steel carrier, the thickness of the Pd60Cu40 thin film is 10 μm, and the thickness of the 304 porous stainless steel carrier is 0.2 mm.

[0058] The connection method of the Pd60Cu40 film of the present embodiment and the 316L porous stainless steel carrier comprises the following steps:

[0059] Step 1. Prepare pressure transmission materials: choose TSX-1400 aluminum silicate fiber paper with a thickness of 2mm, sandwich the aluminum silicate fiber paper between the polished and polished quartz glass, and place it in an electric furnace for sintering , the temperature in the electric furnace was raised to 560 °C, then kept for 50 minutes, and then cooled to 30 °C with the furnace to get the pressure transfer material;

[0060] Step 2, pressing: place the pressure-transmitting material obtained in step 1 on the upper surface of the ground and pol...

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Abstract

The invention discloses a method for connecting a palladium-based alloy film and a porous stainless steel carrier, comprising the following steps: 1. Sintering aluminum silicate fiber paper to obtain a pressure transmission material; 2. Putting the pressure transmission material and the porous stainless steel carrier on the Press molding between the two layers of quartz glass to obtain the assembly; 3. Cover the surface of the porous stainless steel carrier of the assembly with a palladium-based alloy film to obtain the assembly; 4. Place the assembly in a vacuum hot-pressing sintering furnace. Vacuum diffusion welding treatment; 5. Leveling in a creep forming device to obtain a palladium composite film. The invention effectively reduces the gap between the ultra-thin palladium-based alloy film and the porous stainless steel carrier by adopting the pressure transmission material with elastic deformation ability, improves the uniformity of the pressure in the vacuum diffusion welding process, and effectively improves the pressure of the palladium alloy. The combination rate of the membrane and the porous stainless steel carrier makes the prepared palladium composite membrane have better tissue uniformity and higher density, and is suitable for mass production of the palladium composite membrane.

Description

technical field [0001] The invention belongs to the technical field of metal material processing, and in particular relates to a connection method of a palladium-based alloy thin film and a porous stainless steel carrier. Background technique [0002] Metal palladium has a unique hydrogen permeability selectivity, that is, the surface of palladium adsorbs hydrogen molecules and dissociates them into protons and electrons. On the other side, protons accept electrons from the metal and are reduced to hydrogen atoms, which desorb and reassociate into hydrogen molecules. In the above process, only hydrogen dissociated into protons can pass through metal palladium. Therefore, metal palladium is widely used in fission-fusion hybrid reactors to separate tritium, and to recover tritium and other hydrogen isotopes in the exhaust gas of nuclear fusion research. [0003] There are many factors affecting the hydrogen permeability of metal palladium. In order to improve the hydrogen per...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K20/00B23K20/14B23K20/227B23K20/24B23K103/18
CPCB23K20/001B23K20/14B23K20/227B23K20/24B23K2103/18
Inventor 樊科社孙昊董运涛朱磊王虎年
Owner XIAN TIANLI CLAD METAL MATERIALS
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