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High-entropy alloy film for accident fault-tolerant nuclear fuel cladding and preparation method of high-entropy alloy film

A high-entropy alloy and nuclear fuel technology, which is applied in metal material coating process, ion implantation plating, coating, etc., can solve unfavorable fuel cladding economy, reduce coating corrosion resistance, low hardness of metal coating, etc. problems, to achieve the effect of improving resistance to high temperature water vapor oxidation, high practical performance, reducing manufacturing process complexity and production cost

Pending Publication Date: 2022-03-01
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the water vapor oxidation test, the FeCrAl coating may form FeAl, Fe 2 NiO 4 , Fe(OH) 2 and Al(OH) 3 Such corrosion products will reduce the corrosion resistance of the coating to varying degrees.
At the same time, ordinary metal coatings have low hardness and high process complexity, which is not conducive to the economy of fuel cladding

Method used

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  • High-entropy alloy film for accident fault-tolerant nuclear fuel cladding and preparation method of high-entropy alloy film
  • High-entropy alloy film for accident fault-tolerant nuclear fuel cladding and preparation method of high-entropy alloy film

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Effect test

Embodiment 1

[0024] Embodiment 1: the preparation method of the high-entropy alloy film for the accident-tolerant nuclear fuel cladding, comprising the following steps:

[0025] S1: Select zirconium alloy substrate made of commercial nuclear fuel cladding zirconium alloy Zr-1Nb as raw material, use sandpaper to grind its surface to 2000# and polish to mirror surface, then put the polished substrate into acetone and alcohol for ultrasonic cleaning , and then blow dry with nitrogen;

[0026] S2: Select AlCrCuFeMo alloy target and Nb elemental target with a purity of 99.99% as raw materials, place them on the DC target position of the magnetron sputtering system, and then place the zirconium alloy substrate into the vacuum chamber;

[0027] S3: Evacuate the vacuum chamber, and evacuate the vacuum degree of the magnetron sputtering background to 1.0×10 -4 Pa, and then inert gas was introduced to keep the working pressure of the magnetron sputtering system at 0.5Pa;

[0028] S4: Turn on the D...

Embodiment 2

[0032] Embodiment 2: comprise the following steps:

[0033] S1: Select zirconium alloy substrate made of commercial nuclear fuel cladding zirconium alloy Zr-1Nb as raw material, use sandpaper to grind its surface to 2000# and polish to mirror surface, then put the polished substrate into acetone and alcohol for ultrasonic cleaning , and then blow dry with nitrogen;

[0034] S2: Select AlCrCuFeMo alloy target and Nb elemental target with a purity of 99.99% as raw materials, place them on the DC target position of the magnetron sputtering system, and then place the zirconium alloy substrate into the vacuum chamber;

[0035] S3: Evacuate the vacuum chamber, and evacuate the vacuum degree of the magnetron sputtering background to 1.0×10 -4 Pa, and then inert gas was introduced to keep the working pressure of the magnetron sputtering system at 0.5Pa;

[0036] S4: Turn on the DC power supply of the two targets, set the sputtering power of the AlCrCuFeMo target to 150W, and set the...

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Abstract

The invention discloses a high-entropy alloy film for an accident fault-tolerant nuclear fuel cladding and a preparation method of the high-entropy alloy film, and the method sequentially comprises the steps of grinding and polishing, cleaning and blow-drying, vacuum pressure reduction, sputtering deposition and the like, so that the high-entropy alloy film with an amorphous structure is formed in a magnetron sputtering mode. According to the method, the influence of different contents of different elements on the accident fault tolerance performance of the coating can be researched, meanwhile, the film prepared through the method is high in integrity and compactness, the high-temperature water vapor oxidation resistance of the zirconium alloy substrate in the nuclear reactor accident environment is effectively improved, and the service life of the zirconium alloy substrate is prolonged. And the method can effectively reduce the manufacturing process complexity and the production cost of the accident fault-tolerant nuclear fuel cladding.

Description

technical field [0001] The invention relates to the preparation of nuclear fuel cladding films, in particular to a high-entropy alloy film for fault-tolerant nuclear fuel cladding and a preparation method thereof. Background technique [0002] In order to improve the accident tolerance of nuclear cladding, accident-tolerant fuels (ATF), compared with the traditional UO2-zirconium alloy cladding fuel system, can run stably for a long time in a water loss accident, and at the same time in normal operation. The performance of nuclear fuel has been improved to a certain extent under different operating conditions such as nuclear power plant operation and accidents. In addition to the core material, the most important thing in ATF is the nuclear fuel cladding. Compared with fuel replacement and cladding material replacement, the preparation of coatings on the basis of the existing zirconium alloy cladding is the most efficient solution to realize the ATF concept. . After resear...

Claims

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Application Information

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IPC IPC(8): C23C14/16C23C14/35C22C30/02C23C14/02
CPCC23C14/165C22C30/02C23C14/352C23C14/021C23C14/028Y02E30/30
Inventor 兰睿陶振睿王春吉马志峰朱心成
Owner JIANGSU UNIV OF SCI & TECH
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