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Nuclear zirconium alloy cladding surface high temperature and corrosion resisting high-entropy alloy coating and preparing method thereof

A high-temperature corrosion-resistant, high-entropy alloy technology, which is applied in metal material coating technology, coating, ion implantation plating, etc., can solve the problems of poor bonding force between coating and zirconium alloy, poor corrosion resistance, etc., and achieve Excellent corrosion resistance and insolubility, excellent corrosion resistance, excellent high temperature corrosion resistance effect

Active Publication Date: 2019-04-23
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at technical problems such as high temperature resistance, poor corrosion resistance and poor bonding between the coating and the zirconium alloy existing in the fault-tolerant materials of the zirconium alloy coating for nuclear use, the purpose of the present invention is to provide a high-temperature corrosion-resistant high-entropy alloy The coating and its preparation method prepare a dense and uniform high-entropy alloy coating with strong bonding force and good high-temperature corrosion resistance on the surface of zirconium alloy

Method used

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  • Nuclear zirconium alloy cladding surface high temperature and corrosion resisting high-entropy alloy coating and preparing method thereof
  • Nuclear zirconium alloy cladding surface high temperature and corrosion resisting high-entropy alloy coating and preparing method thereof
  • Nuclear zirconium alloy cladding surface high temperature and corrosion resisting high-entropy alloy coating and preparing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] In this example, the CrCuFeMoNi high-entropy alloy coating was deposited on the surface of the Zr-4 alloy substrate using ultra-high vacuum multi-target co-sputtering technology, and the sputtering metal targets used had a uniform purity of 99.99%. %, the working gas Ar purity is 99.999%, and the specific preparation process includes the following steps:

[0033] (1) Base material pretreatment

[0034] The Zr-4 alloy is processed into a square sheet with a side length of 1 cm and a thickness of 3 mm, and the Zr-4 alloy substrate is sequentially polished with 240 mesh, 600 mesh, 1000 mesh, 1500 mesh, and 3000 mesh water abrasive paper from coarse to fine, and then Use a polishing paste to perform polishing on a metallographic polishing machine. After polishing, use acetone and absolute ethanol to ultrasonically clean for 15 minutes, and dry it for use.

[0035] (2) Reverse sputtering cleaning of substrate material

[0036] Place the pretreated substrate material on the...

Embodiment 2

[0042] In this example, the CrCuFeMoNi high-entropy alloy coating was deposited on the surface of the Zr-4 alloy substrate using ultra-high vacuum multi-target co-sputtering technology, and the sputtering metal targets used had a uniform purity of 99.99%. %, the working gas Ar purity is 99.999%, and the specific preparation process includes the following steps:

[0043] (1) Base material pretreatment

[0044] The Zr-4 alloy is processed into a square sheet with a side length of 1 cm and a thickness of 3 mm, and the Zr-4 alloy substrate is sequentially polished with 240 mesh, 600 mesh, 1000 mesh, 1500 mesh, and 3000 mesh water abrasive paper from coarse to fine, and then Use a polishing paste to perform polishing on a metallographic polishing machine. After polishing, use acetone and absolute ethanol to ultrasonically clean for 15 minutes, and dry it for use.

[0045] (2) Reverse sputtering cleaning of substrate material

[0046] Place the pretreated substrate material on the...

Embodiment 3

[0052] In this example, the CrCuFeMoNi high-entropy alloy coating was deposited on the surface of the Zr-4 alloy substrate using ultra-high vacuum multi-target co-sputtering technology, and the sputtering metal targets used had a uniform purity of 99.99%. %, the working gas Ar purity is 99.999%, and the specific preparation process includes the following steps:

[0053] (1) Base material pretreatment

[0054] The Zr-4 alloy is processed into a square sheet with a side length of 1 cm and a thickness of 3 mm, and the Zr-4 alloy substrate is sequentially polished with 240 mesh, 600 mesh, 1000 mesh, 1500 mesh, and 3000 mesh water abrasive paper from coarse to fine, and then Use a polishing paste to perform polishing on a metallographic polishing machine. After polishing, use acetone and absolute ethanol to ultrasonically clean for 20 minutes, and then dry it for use.

[0055] (2) Reverse sputtering cleaning of substrate material

[0056] Place the pretreated substrate material o...

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Abstract

The invention discloses a nuclear zirconium alloy cladding surface high temperature and corrosion resisting high-entropy alloy coating and a preparing method thereof. The high-entropy alloy coating deposited on the surface of a Zr alloy is a CrCuFeMoNi high-entropy alloy, and according to the atomic percents of Cr, Cu, Fe, Mo and Ni in the high-entropy alloy, Cr is 25%-35%, Cu is 20%-30%, Fe is 10%-14%, Mo is 15%-20%, and Ni is 15%-20%. The high-entropy alloy coating is deposited on the surface of the Zr alloy through the multi-target magnetron sputtering technology. According to the CrCuFeMoNi high-entropy alloy coating, the surface hardness of the Zr alloy is improved, corrosion resistance and radiation resistance are improved, good high-temperature resisting performance and corrosion resisting performance are shown, the actual engineering application can be achieved, and the CrCuFeMoNi high-entropy alloy coating is the potential alternative material for accident fault tolerance fuelcladding coatings. The adopted multi-target magnetron sputtering technology is mature, operation is simple, industrial production of the nuclear zirconium alloy cladding surface high temperature andcorrosion resisting high-entropy alloy coating to the engineering field can be achieved, and good development prospects are achieved.

Description

technical field [0001] The invention belongs to the technical field of metal surface modification, and relates to the surface modification technology of zirconium alloys for nuclear use, in particular to the preparation of high-temperature corrosion-resistant CrCuFeMoNi high-entropy alloy coatings on the surface of zirconium alloys and a preparation method thereof. Background technique [0002] In the past few decades, zirconium alloy cladding has shown good radiation resistance and corrosion resistance and has been successfully applied to light water reactors (LWR). And under the conditions of beyond design basis accident (BDBA), the high-temperature oxidation of zirconium alloy cladding will release a large amount of hydrogen and heat, causing a serious nuclear accident, resulting in the leakage of a large amount of radioactive materials, and bringing catastrophic consequences to the human living environment, such as the 2011 " Fukushima Nuclear Power Plant Accident". How...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/35C23C14/16C22C30/02
CPCC22C30/02C23C14/165C23C14/352
Inventor 刘春海陈青松龙剑平何林芯赵莎姚富友唐柳群程妍
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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