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Fe-al/al for fusion reactor tritium breeding cladding 2 o 3 Tritium blocking coating and preparation method thereof

A technology of tritium breeding and fusion reactor, which is applied in the direction of coating, metal material coating process, vacuum evaporation plating, etc., can solve the problem of deteriorating the mechanical properties of steel substrates, sacrificing the corrosion resistance and radiation resistance of coatings, and increasing energy consumption and other issues, to achieve the effects of shortening the annealing time, making the preparation process green and environmentally friendly, and reducing energy consumption

Active Publication Date: 2019-11-12
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still many problems in the above solutions: adding trace elements can only reduce the size of high-alumina compounds, but cannot completely eliminate them; increasing the heat treatment temperature and prolonging the holding time not only increases energy consumption but also deteriorates the steel matrix Mechanical properties; reducing the thickness of the aluminum coating will inevitably sacrifice the corrosion resistance and radiation resistance of the coating, etc.

Method used

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  • Fe-al/al for fusion reactor tritium breeding cladding <sub>2</sub> o <sub>3</sub> Tritium blocking coating and preparation method thereof
  • Fe-al/al for fusion reactor tritium breeding cladding <sub>2</sub> o <sub>3</sub> Tritium blocking coating and preparation method thereof
  • Fe-al/al for fusion reactor tritium breeding cladding <sub>2</sub> o <sub>3</sub> Tritium blocking coating and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Fe-Al / Al for Fusion Reactor Tritium Breeding Cladding 2 o 3 Tritium blocking coating, its preparation method is as follows:

[0036] (1) Fix the cleaned 100Cr6 steel sheet in front of the nozzle of the supersonic particle shot blasting equipment, the distance between the surface to be sprayed and the nozzle is 30mm, the carrier gas pressure of the supersonic particle bombardment equipment is 2.5MPa, and the nozzle walking speed is 1mm / s ( The shot peening area converted into unit time is 1.5cm 2 / s), the shot peening incident angle is 90°, the shot peening medium is spherical alumina powder (corundum powder), and the diameter is 60 μm;

[0037] (2) Place the shot-peened steel base material obtained in step (1) in a magnetron sputtering vacuum chamber, and the background vacuum pressure of the vacuum chamber is 8.0×10 -4 Pa, under the condition of sputtering power of 100W, radio frequency magnetron sputtering coating is carried out, the Al target with a purity of not ...

Embodiment 2

[0046] Fe-Al / Al for Fusion Reactor Tritium Breeding Cladding 2 o 3 Tritium blocking coating, its preparation method is as follows:

[0047] (1) Fix the cleaned 304 stainless steel sheet in front of the nozzle of the supersonic particle shot blasting equipment, the distance between the surface to be sprayed and the nozzle is 40mm, the carrier gas pressure of the supersonic particle bombardment equipment is 1.5MPa, and the nozzle walking speed is 3mm / s (Converted to the peening area per unit time is 4.5cm 2 / s), shot peening incidence angle 90º, shot peening medium is spherical alumina powder (corundum powder), diameter 40μm;

[0048] (2) Place the shot-peened steel base material obtained in step (1) in a magnetron sputtering vacuum chamber with a background vacuum pressure of 8.0×10 -4 Pa, radio frequency magnetron sputtering coating at a sputtering power of 100W, using an Al target with a purity of not less than 99.95wt% as the sputtering source, passing through an Ar body ...

Embodiment 3

[0052] Fe-Al / Al for Fusion Reactor Tritium Breeding Cladding 2 o 3 Tritium blocking coating, its preparation method is as follows:

[0053](1) Fix the cleaned 304 stainless steel sheet in front of the nozzle of the supersonic particle shot blasting equipment, the distance between the surface to be sprayed and the nozzle is 40mm, the carrier gas pressure of the supersonic particle bombardment equipment is 1.5MPa, and the nozzle walking speed is 3mm / s (Converted to the peening area per unit time is 4.5cm 2 / s), shot peening incidence angle 90º, shot peening medium is spherical alumina powder (corundum powder), diameter 40μm;

[0054] (2) Place the shot-peened steel base material obtained in step (1) in a magnetron sputtering vacuum chamber with a background vacuum pressure of 8.0×10 -4 Pa, radio frequency magnetron sputtering coating at a sputtering power of 100W, using an Al target with a purity of not less than 99.95wt% as the sputtering source, passing through an Ar body d...

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Abstract

The invention discloses Fe-Al / Al for fusion reactor tritium breeding cladding 2 o 3 Tritium-blocking coating and preparation method thereof, coating of the present invention is formed by Fe-Al diffusion layer and its surface in situ oxidation-generated Al 2 o 3 film composition. The nano-grain boundary on the side of the steel matrix in the Fe-Al diffusion layer of the present invention can become a channel for Al atoms to diffuse to the inside of the steel matrix; during diffusion annealing, the Al atoms diffuse rapidly along the nano-grain boundary to the inside of the steel matrix, which will greatly reduce the The content of Al element in the coating and the interface can inhibit the high aluminum compound (Fe 2 Al 5 , FeAl 3 , FeAl 2 etc.); in the coating, the formation of low-aluminum compounds (FeAl) reduces the composition gradient of Fe and Al elements and inhibits the generation of Kirkendall voids.

Description

technical field [0001] The invention belongs to the technical field of tritium-blocking coating preparation, and the invention relates to a kind of Fe-Al / Al fusion reactor tritium breeding cladding 2 o 3 Tritium blocking coating and its preparation method. Background technique [0002] As a scarce strategic resource, tritium has been widely used in the fields of national defense, nuclear energy, medicine, petroleum industry and so on. Because tritium is radioactive and highly permeable, preventing the penetration and leakage of tritium is a practical problem that cannot be ignored. In particular, the tritium produced in the tritium breeding envelope of the fusion reactor can easily penetrate outward through the cladding structure material. In order to effectively block tritium without sacrificing the overall performance of the structural material, a realistic method is to coat the surface of the structural material with a corresponding tritium-blocking coating. [0003] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/02C23C14/16C23C14/35C23C14/58
CPCC23C14/028C23C14/165C23C14/35C23C14/5806C23C14/5853
Inventor 劳远侠汪渊牛文骁
Owner SICHUAN UNIV
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