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Zirconium alloy coating with high burnup and long service life and preparation method of zirconium alloy coating

A zirconium alloy and coating technology is applied in the field of preparation of high fuel consumption and long-life zirconium alloy coatings, which can solve the problems of not being able to meet comprehensive performance requirements at the same time, and achieve the effects of saving preparation costs, improving compactness and achieving remarkable effects.

Active Publication Date: 2019-05-28
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a zirconium alloy coating for high fuel consumption and long service life and its preparation method, to solve the problem that none of the existing coating preparation methods can meet the comprehensive performance requirements at the same time

Method used

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  • Zirconium alloy coating with high burnup and long service life and preparation method of zirconium alloy coating
  • Zirconium alloy coating with high burnup and long service life and preparation method of zirconium alloy coating
  • Zirconium alloy coating with high burnup and long service life and preparation method of zirconium alloy coating

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Embodiment 1

[0054] A method for preparing a zirconium alloy coating with high fuel consumption and long service life, comprising:

[0055] (1) Pre-treatment: Place the obtained zirconium alloy base material in an ultrasonic container and clean it with carbon tetrachloride and acetone for 10-20 minutes respectively, then use deionized water to ultrasonically clean it for more than 10 minutes, and use deionized water in the final stage rinse. Dry the cleaned pipe samples in a vacuum oven at a temperature not exceeding 50°C. Clamp the pre-treated sample on the turntable of the coating equipment.

[0056] (2) Ion cleaning: vacuumize the vacuum chamber of the coating equipment, and the vacuum degree reaches 1×10 -3 After the Pa is above, a certain flow rate of argon is then filled to keep the pressure in the vacuum chamber at 0.1-5Pa. Adjust the bias voltage above -1000V for about 10 to 20 minutes, and bombard the surface of the zirconium alloy tube with the high-speed Ar ion flow to achiev...

Embodiment 2

[0067] A method for preparing a zirconium alloy coating with high fuel consumption and long service life, comprising:

[0068] (1) Pre-treatment: Place the obtained zirconium alloy base material in an ultrasonic container and clean it with carbon tetrachloride and acetone for 10-20 minutes respectively, then use deionized water to ultrasonically clean it for more than 10 minutes, and use deionized water in the final stage rinse. Dry the cleaned pipe samples in a vacuum oven at a temperature not exceeding 50°C. Clamp the pre-treated sample on the turntable of the coating equipment.

[0069] (2) Ion cleaning: vacuumize the vacuum chamber of the coating equipment, and the vacuum degree reaches 1×10 -3 After the Pa is above, a certain flow rate of argon is then filled to keep the pressure in the vacuum chamber at 0.1-5Pa. Adjust the bias voltage above -1000V for about 10 to 20 minutes, and bombard the surface of the zirconium alloy tube with the high-speed Ar ion flow to achiev...

Embodiment 3

[0080] A method for preparing a zirconium alloy coating with high fuel consumption and long service life, comprising:

[0081] (1) Pre-treatment: Place the obtained zirconium alloy base material in an ultrasonic container and clean it with carbon tetrachloride and acetone for 10-20 minutes respectively, then use deionized water to ultrasonically clean it for more than 10 minutes, and use deionized water in the final stage rinse. Dry the cleaned pipe samples in a vacuum oven at a temperature not exceeding 50°C. Clamp the pre-treated sample on the turntable of the coating equipment.

[0082] (2) Ion cleaning: vacuumize the vacuum chamber of the coating equipment, and the vacuum degree reaches 1×10 -3 After the Pa is above, a certain flow rate of argon is then filled to keep the pressure in the vacuum chamber at 0.1-5Pa. Adjust the bias voltage above -1000V for about 10 to 20 minutes, and bombard the surface of the zirconium alloy tube with the high-speed Ar ion flow to achiev...

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Abstract

The invention relates to a zirconium alloy coating with high burnup and long service life and a preparation method of the zirconium alloy coating. Zirconium alloy is a fuel element cladding material,the coating is a metal Cr coating, the purity of metal Cr is 99.95%, and the thickness of the coating is 1-10 microns. The zirconium alloy coating is mainly used for improving the corrosion resistanceand high temperature oxidation resistance of a zirconium alloy cladding so as to improve the inherent safety of a fuel element and prolong the refuelling cycle. The invention also provides the preparation method of the zirconium alloy coating. By optimizing the method, better coating binding force and a fine coating surface structure are obtained.

Description

technical field [0001] The invention relates to the field of high-temperature protective coatings, in particular to a preparation method of a zirconium alloy coating with high fuel consumption and long service life. Background technique [0002] Zirconium alloys have long been used as fuel cladding materials for water-cooled reactors due to their low thermal neutron absorption cross section, moderate mechanical properties, good corrosion resistance and processability. But after the Fukushima nuclear accident in 2011, international efforts were made to research accident-tolerant fuel (ATF) to replace the existing UO 2 -Zr fuel system to improve the ability of nuclear fuel elements to maintain structural integrity under severe accidents, thereby improving the safety and reliability of nuclear reactors under accident conditions. [0003] From the perspective of nuclear fuel cladding, ATF accident-resistant fuel cladding mainly considers corrosion resistance in high temperature...

Claims

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Application Information

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IPC IPC(8): C23C14/32C23C14/35C23C14/16C23C14/02C23C14/58
Inventor 韦天国张瑞谦杨红艳陈寰杜沛南何琨邱绍宇
Owner NUCLEAR POWER INSTITUTE OF CHINA
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