Hydrogen diffusion mechanism on α-AlPO4 (0001)/α-Al2O3 (0001) interface: A first-principles study

Wang, L.Y.; Sun, Fuhua; Zhou, Qian; Liao, Dunming; Jia, Yanfeng; Xue, Lucheng; Li, H.P.; Yan, You Wei

doi:10.1016/j.fusengdes.2017.05.039

Cited by 4 publications

(2 citation statements)

References 31 publications

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“…The other reason for advancement of deuterium resistance is the coating composition, in which α‐Al 2 O 3 has the highest theoretical hydrogen resistance level among the various metal oxides 51 . In addition, the interface formed between α‐Al 2 O 3 and AlPO 4 is also conducive to the adsorption of hydrogen isotopes 52 . For these reasons, the α‐Al 2 O 3 /AlPO 4 coating represents a superior deuterium permeation resistance.…”

Section: Resultsmentioning

confidence: 99%

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Thermochemically synthesized α‐Al₂O₃ composite coating with high bonding strength and deuterium permeation resistance

Li,

Zheng,

Liu

et al. 2023

J Am Ceram Soc.

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Hydrogen isotope permeation in structural steels can cause severe issues, including steel brittleness, fuel loss, and radioactive pollution in fusion reactors. To tackle this issue, we report a simple synthesis of α‐Al2O3/AlPO4 composite coating by the thermochemical reaction method to serve as an effective barrier hampering hydrogen isotope permeation. This coating was formed at 500°C and composed of α‐Al2O3 and AlPO4 phases. A relatively uniform and compact structure with thickness of ∼35 μm made its corrosion resistance reaching above 3000 times that of the 321 steel substrate. With just one‐side coated, the α‐Al2O3/AlPO4 coating achieved a considerable deuterium permeation reduction factor of 1935 at 450°C, three orders of magnitude higher than 321 steels. What's more, after the deuterium permeation test, no pores or cracks were generated. The excellent bonding between the coating and the substrate was resulted from the formation of CrxPy at their interface induced by Cr diffusion from the substrate. The results obtained from the current study shed new light on seeking reliable and viable ceramic coatings to tackle hydrogen permeation issues.

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Section: Resultsmentioning

confidence: 99%

“…51 In addition, the interface formed between α-Al 2 O 3 and AlPO 4 is also conducive to the adsorption of hydrogen isotopes. 52 For these reasons, the α-Al 2 O 3 /AlPO 4 coating represents a superior deuterium permeation resistance.…”

Section: Deuterium Permeation Reduction Of the α-Al 2 O 3 Composite C...mentioning

confidence: 99%

Thermochemically synthesized α‐Al₂O₃ composite coating with high bonding strength and deuterium permeation resistance

Li,

Zheng,

Liu

et al. 2023

J Am Ceram Soc.

View full text Add to dashboard Cite

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First-principles study on hydrogen diffusion mechanism of α-Al2O3/Ti2O3 interface

Wang

Sun

Zhou

et al. 2019

Fusion Engineering and Design

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Significant hydrogen isotopes permeation resistance via nitride nano-multilayer coating

Guo

Yin

et al. 2020

International Journal of Hydrogen Energy

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Hydrogen diffusion mechanism on α-AlPO4 (0001)/α-Al2O3 (0001) interface: A first-principles study

Cited by 4 publications

References 31 publications

Thermochemically synthesized α‐Al₂O₃ composite coating with high bonding strength and deuterium permeation resistance

Thermochemically synthesized α‐Al₂O₃ composite coating with high bonding strength and deuterium permeation resistance

First-principles study on hydrogen diffusion mechanism of α-Al2O3/Ti2O3 interface

Significant hydrogen isotopes permeation resistance via nitride nano-multilayer coating

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Hydrogen diffusion mechanism on α-AlPO4 (0001)/α-Al2O3 (0001) interface: A first-principles study

Cited by 4 publications

References 31 publications

Thermochemically synthesized α‐Al2O3 composite coating with high bonding strength and deuterium permeation resistance

Thermochemically synthesized α‐Al2O3 composite coating with high bonding strength and deuterium permeation resistance

First-principles study on hydrogen diffusion mechanism of α-Al2O3/Ti2O3 interface

Significant hydrogen isotopes permeation resistance via nitride nano-multilayer coating

Contact Info

Product

Resources

About

Thermochemically synthesized α‐Al₂O₃ composite coating with high bonding strength and deuterium permeation resistance

Thermochemically synthesized α‐Al₂O₃ composite coating with high bonding strength and deuterium permeation resistance