A dense Fe-Al/Al2O3 coating as tritium permeation barrier on CLAM steel by hot-dipping aluminizing

doi:10.1016/j.surfcoat.2022.128491

	A dense Fe-Al/Al2O3 coating as tritium permeation barrier on CLAM steel by hot-dipping aluminizing
	Shao, Zongming 2,3; Yang, Hao 1; Zhang, Siwei 2; Liu, Weiping 2; Xiao, Zunqi 2; Zheng, Mingjie 2,3
刊名	SURFACE & COATINGS TECHNOLOGY
	2022-06-25
卷号	440
关键词	CLAM steel Hot-dipping aluminizing Deuterium permeation Al2O3 coating
ISSN号	0257-8972
DOI	10.1016/j.surfcoat.2022.128491
通讯作者	Zheng, Mingjie(mingjie.zheng@inest.cas.cn)
英文摘要	Exploring tritium permeation barriers with high permeation reduction factor (PRF) by an industrial scale process is crucial for tritium systems in fusion reactors. Herein, we fabricated a dense Fe-Al/Al2O3 coating by a simple hot-dipping aluminizing (HDA) method and optimized oxidation strategy. The microstructure, chemical composition, and crystallographic characteristic of obtained samples were investigated. And the permeation of deuterium through the sample was determined by gas-driven permeation (GDP) experiments. The results show that the obtained oxide coating mainly consisted of gamma-Al2O3 layer and Fe-Al gradient transition layer. Notably, the Al2O3 layer formed by the oxidation of FeAl alloy coating possessed a high PRF value of 2394 at 550 degrees C. Compared with the direct oxidation of HDA sample, the oxide coating prepared by the alloy topcoat oxidation strategy was denser and had less defects. Meanwhile, the effect of Al topcoat and different Fe-Al alloy topcoats on the microstructure and performance of the oxide coating were investigated, respectively. And the formation mechanisms of oxide coatings prepared by different oxidation strategies were also analyzed.
资助项目	National Magnetic Confinement Fusion Program of China[2018YFE0313400] ; Guang Dong Basic and Applied Basic Research Foundation[2020A1515110713]
WOS关键词	HYDROGEN PERMEATION ; LAYER GROWTH ; IN-SITU ; OXIDATION ; SILICON ; FE ; DEPOSITION ; EVOLUTION ; DIFFUSION ; CORROSION
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000800614000002
资助机构	National Magnetic Confinement Fusion Program of China ; Guang Dong Basic and Applied Basic Research Foundation
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/131011]
专题	中国科学院合肥物质科学研究院
通讯作者	Zheng, Mingjie
作者单位	1.Jihua Lab, Foshan 528200, Peoples R China 2.Hefei Inst Phys Sci, Chinese Acad Sci, Hefei 230031, Peoples R China 3.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Shao, Zongming,Yang, Hao,Zhang, Siwei,et al. A dense Fe-Al/Al2O3 coating as tritium permeation barrier on CLAM steel by hot-dipping aluminizing[J]. SURFACE & COATINGS TECHNOLOGY,2022,440.
APA	Shao, Zongming,Yang, Hao,Zhang, Siwei,Liu, Weiping,Xiao, Zunqi,&Zheng, Mingjie.(2022).A dense Fe-Al/Al2O3 coating as tritium permeation barrier on CLAM steel by hot-dipping aluminizing.SURFACE & COATINGS TECHNOLOGY,440.
MLA	Shao, Zongming,et al."A dense Fe-Al/Al2O3 coating as tritium permeation barrier on CLAM steel by hot-dipping aluminizing".SURFACE & COATINGS TECHNOLOGY 440(2022).