A light water reactor zirconium tube coating

A technology of light water reactor and zirconium tube, applied in coating, metal material coating process, vacuum evaporation coating and other directions, can solve the problem of no reliable and effective technical process method and route, etc., to improve and ensure high quality, improve Effect of surface strength, high peel strength

Inactive Publication Date: 2020-06-30
BEIJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The United States mainly pays attention to MAX phase and ceramic coating materials, South Korea and France mainly pay attention to metal Cr coating materials, but there are no reliable and effective technical methods and routes for ATF coatings at home and abroad, because the coating involves The environment is extremely high temperature and high pressure environment

Method used

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  • A light water reactor zirconium tube coating
  • A light water reactor zirconium tube coating
  • A light water reactor zirconium tube coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] 1. Turn on the high-power pulse magnetron deposition system to clean the surface of the zirconium tube with metal ions. During cleaning, the total beam current is 2-6A, the negative pressure is 500-1000V, the high-power pulse power is 30KW, the temperature is 300-550°C, and the air pressure is 1× 10 -1 -1Pa, the incoming gas is Ar, and the bombardment time is 30-120min.

[0056] 2. Turn on the magnetic filtration technology and high-power pulse magnetron deposition technology to deposit the metal film layer on the surface of the zirconium tube. -3 -1×10 -1 Pa, the rotation mode is revolution + rotation, and the revolution speed is 10r / min; the cathode target material of magnetic filtration technology is CrAlSi, the arcing current is 80A, and the beam current is 800mA; the cathode target material of high-power pulse technology is MoNbZr, pulse power 30KW, pulse The width is 0-30ms, the beam intensity is 0-3A; the zirconium tube coating is an alternating nano-cycle comp...

Embodiment 2

[0058] 1. Turn on the high-power pulse magnetron deposition system to clean the surface of the zirconium tube with metal ions. During cleaning, the total beam current is 2-6A, the negative pressure is 500-1000V, the high-power pulse power is 100KW, the temperature is 300-550°C, and the air pressure is 1× 10 -1 -1Pa, the incoming gas is Ar, and the bombardment time is 30-120min.

[0059] 2. Turn on the magnetic filtration technology and high-power pulse magnetron deposition technology to deposit the metal film layer on the surface of the zirconium tube. -3 -1×10 -1 Pa, the rotation mode is revolution + rotation, and the revolution speed is 10r / min; the cathode target material of magnetic filtration technology is CrAlSi, the arcing current is 75A, and the beam current is 750mA; the cathode target material of high-power pulse technology is MoNbZr, pulse power 100KW, pulse The width is 0-30ms, the beam intensity is 0-3A; the zirconium tube coating is an alternating nano-cycle co...

Embodiment 3

[0061] 1. Turn on the high-power pulse magnetron deposition system to clean the surface of the zirconium tube with metal ions. During cleaning, the total beam current is 2-6A, the negative pressure is 500-1000V, the high-power pulse power is 300KW, the temperature is 300-550°C, and the air pressure is 1× 10 -1 -1Pa, the incoming gas is Ar, and the bombardment time is 30-120min.

[0062] 2. Turn on the magnetic filtration technology and high-power pulse magnetron deposition technology to deposit the metal film layer on the surface of the zirconium tube. -3 -1×10 -1 Pa, the rotation method is revolution + rotation, and the revolution speed is 10r / min; the cathode target material of the magnetic filter technology is CrAlSi, the arcing current is 70A, and the beam current is 700mA; the cathode target material of the high-power pulse technology is MoNbZr, the pulse power is 300KW, the pulse The width is 0-30ms, the beam intensity is 0-3A; the zirconium tube coating is an alternat...

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Abstract

The invention provides a method for preparing zirconium pipe coating of a light-water reactor. The method mainly comprises the following steps that a CrAbSi circulating nano coating and a MoNbZr circulating nano coating are alternately deposited by utilizing a high-power pulse technology and a magnetic filtration deposition technology, the thickness of the CrAbSi circulating nano coating and the MoNbZr circulating nano coating in a unit period is 0-15 nanometers, and the total thickness of the coating is 0-15 micrometres. After the nano coatings are deposited alternately, the oxidation resistance of the zirconium pipe at high temperature and high pressure in a high-pressure kettle is obviously enhanced, by implementing the method, a nano-circulation composite structure (especially the elements of Al, Cr and Si are added) is deposited alternately on the zirconium pipe, so that the inward diffusion of an oxygen element at the high temperature can be very well prevented, due to the mutualsynergistic effect of various elements, falling off, cracking and diffusion behaviors of oxygen atoms of a film layer can be effectively prevented in the high temperature and high pressure, and the safety and reliability of a fault-tolerant fuel are improved.

Description

technical field [0001] The invention is aimed at the zirconium water reaction when a light water reactor nuclear accident occurs. The invention improves the safety characteristics of the nuclear reactor, and proposes surface modification coating of the zirconium tube in the high-temperature and high-pressure environment to prevent the zirconium tube from reacting with water in the high-temperature and high-pressure environment. The invention relates to a composite coating and a preparation method thereof. The specific technologies are magnetic filter deposition system and high power pulse magnetron technology. [0002] technical background [0003] As a clean energy recognized in the world, nuclear energy has the characteristics of high efficiency, safety and economy, and is an important resource to alleviate the current shortage of water resources and coal power. Zirconium alloy is used as the cladding material of nuclear power plant reactor components and other reactor ma...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C23C14/32C23C14/16C23C14/02C23C14/22
Inventor廖斌欧阳晓平罗军
OwnerBEIJING NORMAL UNIVERSITY