Effects of Ar/O2 ratio on preparation and properties of multilayer Cr2O3/α-Al2O3 tritium permeation barrier

Wang, L.; Wu, Yunyi; Luo, Xiaoxing; Ning, Zhien; Wang, J.H.; Yang, Jijun; Feng, Yongjin; Liao, Jiali; Yang, Yuanyou; Feng, Kai-Ming; Liu, Naiming; Gong, Ming

doi:10.1016/j.surfcoat.2018.02.021

Cited by 30 publications

(5 citation statements)

References 46 publications

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“…Use of a double-layer permeation barrier coating showed better deuterium permeation performance than that of a single Y 2 O 3 layer of the same thickness; this finding holds true for other hydrogen isotopes, as well . It was found that a Cr 2 O 3 /Al 2 O 3 coating fabricated using PVD varied process parameters showed exceptional hardness, good corrosion and irradiation resistance, and excellent permeation performance at 823–973 K. The deposition of nitrides such as AlN, TiN, and BN can act as a barrier for hydrogen permeation . Bazanella et al showed that a 1.7-μm double-layer AlN/TiN coating on a 316L SS substrate reduces deuterium permeability by 2–3 orders of magnitude as compared to the naked substrate .…”

Section: Tbc Applicationsmentioning

confidence: 89%

“…158 It was found that a Cr 2 O 3 /Al 2 O 3 coating fabricated using PVD varied process parameters showed exceptional hardness, good corrosion and irradiation resistance, and excellent permeation performance at 823−973 K. The deposition of nitrides such as AlN, TiN, and BN can act as barrier for hydrogen permeation. 159 Bazanella et al showed that a 1.7-μm double-layer AlN/TiN coating on a 316L SS substrate reduces deuterium permeability by 2−3 orders of magnitude as compared to the naked substrate. 160 Although there are many options in research for permeation barriers for fusion applications, most solutions involve thin film ceramic layers that delaminate and increase in permeability as high radiation fluence damages the material.…”

Section: Tbc Applicationsmentioning

confidence: 99%

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Thermal Barrier Coatings Overview: Design, Manufacturing, and Applications in High-Temperature Industries

Mondal

Nuñez

Myer

et al. 2021

Ind. Eng. Chem. Res.

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Today's competitive world economy is creating an indispensable demand for increased efficiency of engineering components that operate in harsh environments (i.e., very high-temperature, corrosive, or neutron irradiation environments), for applications in the energy, automotive, aerospace, electronics, and power industries. Increased research is being done on thermal barrier coatings (TBCs) for protecting such components, since the versatility of manufacturing techniques and the scale of deployment result in increased life, economics, performance, and durability. This review focuses on the advances that led to using TBCs for component life extension and, more recently, as an integral part of advanced component design for high-temperature and other types of harsh environments, such as those found in nuclear-related applications. Factors that led to state-of-the-art advanced coating-fabrication techniques [e.g., electron-beam physical vapor deposition (EB-PVD), plasma spray deposition, and electrophoretically deposited TBCs, as well as functionally graded material (FGM) manufacturing] have also been emphasized in current coating R&D. This review explores the current state of TBCs, i.e., the latest advances regarding their fabrication and performance, associated challenges, and recommendations for their future use in aerospace, nuclear, high-temperature, or otherwise harsh environments.

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Section: Tbc Applicationsmentioning

confidence: 89%

Section: Tbc Applicationsmentioning

confidence: 99%

Thermal Barrier Coatings Overview: Design, Manufacturing, and Applications in High-Temperature Industries

Mondal

Nuñez

Myer

et al. 2021

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

“…The breeding blankets and fuel cycle components will require tritium permeation barriers to prevent loss into structures and coolants and potentially the environment. These are still under development with some promising results in operation at high temperature, corrosion and hence lifetime [21,22], but limiting tritium transport is a major factor in determining the required tritium breeding ratio of the blanket.…”

Section: Materials Manufacturing and The Supply Chainmentioning

confidence: 99%

Engineering challenges for accelerated fusion demonstrators

Surrey

2019

Phil. Trans. R. Soc. A.

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There are several programmes within the fusion community that are engaged in the design of fusion devices to follow the International Thermonuclear Experimental Reactor (ITER), referred to as ‘demonstrators’. These programmes have identified many issues over the past decade, and research now concentrates on optimizing the combination of systems against a set of Key Performance Indicators (KPI) which may vary between programmes. While the return on investment in and experience from ITER is seen as an important factor in this research there are significant differences in the operational conditions and KPI of demonstrators that generate additional problems requiring different solutions. Among these problems are the necessary use of uncommon materials for structural and functional purposes, the impact of the availability KPI on basic machine design, configuration and component lifetime and the integration of the tritium fuel and thermodynamic cycles. These raise issues of component manufacture and standards and of resource availability in the required quantities and quality that are independent of device size and design. Interpreting ‘accelerating fusion’ in a wider sense, the impact of these issues, analysed in respect of developmental timescales, shows that a strategy of early engagement with the industrial supply chain and the development of computational engineering testing and verification will be essential to prevent prolonged timescales to fusion progress. This article is part of a discussion meeting issue ‘Fusion energy using tokamaks: can development be accelerated?’

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“…Such a high temperature will inevitably deteriorate the structure of steels and bring about negative consequences to their mechanical properties. 24,25 Plasma spraying and physical vapor deposition [26][27][28] have been performed to obtain α-Al 2 O 3 based coatings at lower temperatures. However, these methods require special equipments and complicated processing procedures with high cost.…”

Section: Introductionmentioning

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.

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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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Effects of Ar/O2 ratio on preparation and properties of multilayer Cr2O3/α-Al2O3 tritium permeation barrier

Cited by 30 publications

References 46 publications

Thermal Barrier Coatings Overview: Design, Manufacturing, and Applications in High-Temperature Industries

Thermal Barrier Coatings Overview: Design, Manufacturing, and Applications in High-Temperature Industries

Engineering challenges for accelerated fusion demonstrators

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

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Effects of Ar/O2 ratio on preparation and properties of multilayer Cr2O3/α-Al2O3 tritium permeation barrier

Cited by 30 publications

References 46 publications

Thermal Barrier Coatings Overview: Design, Manufacturing, and Applications in High-Temperature Industries

Thermal Barrier Coatings Overview: Design, Manufacturing, and Applications in High-Temperature Industries

Engineering challenges for accelerated fusion demonstrators

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

Contact Info

Product

Resources

About

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