Tritium permeation resistance of Al-Al2O3 coatings prepared by thermal spraying
- VernacularTitle:热喷涂制备Al-Al2O3涂层阻氚性能分析
- Author:
Jianing ZHAO
1
;
Yeqiang XU
1
Author Information
- Publication Type:Journal Article
- Keywords: Tritium permeation resistance; Al-Al2O3; Tritium permeability
- From: Chinese Journal of Radiological Health 2023;32(2):146-149
- CountryChina
- Language:Chinese
- Abstract: Objective To make the preparation method for coatings more convenient in the field where the requirements for tritium permeation resistance are not high, this paper proposes a method for preparing Al-Al2O3 tritium permeation barriers by thermal spraying technology and conducts a performance analysis. Methods The tritium permeation resistance and adhesion of Al-Al2O3 coatings prepared by thermal spraying were verified by experiments. Results The tritium permeability was reduced by one order of magnitude after a 0.2-mm Al-Al2O3 coating was sprayed on the stainless steel surface, and the tritium permeation resistance had no significant improvement with the increase in coating thickness; the adhesion of the coating was determined in the range of 5-10 N by scratch tests. Conclusion In this paper, a simple preparation method for tritium permeation barrier is proposed, and the tritium permeation resistance performance of Al-Al2O3 coatings prepared by thermal spraying technology is determined, which provides a reference for the selection of tritium permeation barrier in the field of tritium-containing solid waste storage.
