Recent progress in the development of electrically insulating coatings for a liquid lithium blanket

Bruce A. Pint; P. F. Tortorelli; A. Jankowski; J. Hayes; T. Muroga; A. Suzuki; O. I. Yeliseyeva; V. M. Chernov

doi:10.1016/j.jnucmat.2004.04.010

Recent progress in the development of electrically insulating coatings for a liquid lithium blanket

Bruce A. Pint, P. F. Tortorelli, A. Jankowski, J. Hayes, T. Muroga, A. Suzuki, O. I. Yeliseyeva, V. M. Chernov

Materials Science and Technology Div

Research output: Contribution to journal › Conference article › peer-review

96 Scopus citations

Abstract

Electrically insulating coatings on the first wall of magnetic confinement reactors are essential to reduce the magnetohydrodynamic (MHD) force that would otherwise inhibit the flow of the lithium coolant. There are very few candidate materials because Li dissolves most oxides and many carbides and nitrides do not have sufficient electrical resistivity for this application. Based on thermodynamic considerations and testing of bulk ceramics, the most promising materials are Y₂O₃, Er₂O₃ and AlN. Coatings of these materials are being fabricated by a variety of processing techniques and their resistivity and microstructure characterized. Electrical resistivity results from Y₂O₃ coatings as-deposited and after exposure to Li are presented. Self-healing and in situ coatings are being investigated based on CaO from Li-Ca and Er₂O₃ from Li-Er. Because there are likely to be cracks in any coatings, a dual-layer system with a thin outer layer of vanadium appears to be a more attractive MHD coating system. Published by Elsevier B.V.

Original language	English
Pages (from-to)	119-124
Number of pages	6
Journal	Journal of Nuclear Materials
Volume	329-333
Issue number	1-3 PART A
DOIs	https://doi.org/10.1016/j.jnucmat.2004.04.010
State	Published - Aug 1 2004
Event	Proceedings of the 11th Conference on Fusion Research - Kyoto, Japan Duration: Dec 7 2003 → Dec 12 2003

Funding

The research was sponsored by the Office of Fusion Energy Sciences, US Department of Energy (DOE), under contract DE-AC05-00OR22725 with UT-Battelle, LLC. J.R. DiStefano, D.F.Wilson and S.J. Zinkle at ORNL and N.B. Morley at UCLA provided comments on the manuscript.

Funders	Funder number
U.S. Department of Energy	DE-AC05-00OR22725
Fusion Energy Sciences

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title = "Recent progress in the development of electrically insulating coatings for a liquid lithium blanket",

abstract = "Electrically insulating coatings on the first wall of magnetic confinement reactors are essential to reduce the magnetohydrodynamic (MHD) force that would otherwise inhibit the flow of the lithium coolant. There are very few candidate materials because Li dissolves most oxides and many carbides and nitrides do not have sufficient electrical resistivity for this application. Based on thermodynamic considerations and testing of bulk ceramics, the most promising materials are Y2O3, Er2O3 and AlN. Coatings of these materials are being fabricated by a variety of processing techniques and their resistivity and microstructure characterized. Electrical resistivity results from Y2O3 coatings as-deposited and after exposure to Li are presented. Self-healing and in situ coatings are being investigated based on CaO from Li-Ca and Er2O3 from Li-Er. Because there are likely to be cracks in any coatings, a dual-layer system with a thin outer layer of vanadium appears to be a more attractive MHD coating system. Published by Elsevier B.V.",

author = "Pint, {Bruce A.} and Tortorelli, {P. F.} and A. Jankowski and J. Hayes and T. Muroga and A. Suzuki and Yeliseyeva, {O. I.} and Chernov, {V. M.}",

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AU - Pint, Bruce A.

AU - Tortorelli, P. F.

AU - Jankowski, A.

AU - Hayes, J.

AU - Muroga, T.

AU - Suzuki, A.

AU - Yeliseyeva, O. I.

AU - Chernov, V. M.

PY - 2004/8/1

Y1 - 2004/8/1

N2 - Electrically insulating coatings on the first wall of magnetic confinement reactors are essential to reduce the magnetohydrodynamic (MHD) force that would otherwise inhibit the flow of the lithium coolant. There are very few candidate materials because Li dissolves most oxides and many carbides and nitrides do not have sufficient electrical resistivity for this application. Based on thermodynamic considerations and testing of bulk ceramics, the most promising materials are Y2O3, Er2O3 and AlN. Coatings of these materials are being fabricated by a variety of processing techniques and their resistivity and microstructure characterized. Electrical resistivity results from Y2O3 coatings as-deposited and after exposure to Li are presented. Self-healing and in situ coatings are being investigated based on CaO from Li-Ca and Er2O3 from Li-Er. Because there are likely to be cracks in any coatings, a dual-layer system with a thin outer layer of vanadium appears to be a more attractive MHD coating system. Published by Elsevier B.V.

AB - Electrically insulating coatings on the first wall of magnetic confinement reactors are essential to reduce the magnetohydrodynamic (MHD) force that would otherwise inhibit the flow of the lithium coolant. There are very few candidate materials because Li dissolves most oxides and many carbides and nitrides do not have sufficient electrical resistivity for this application. Based on thermodynamic considerations and testing of bulk ceramics, the most promising materials are Y2O3, Er2O3 and AlN. Coatings of these materials are being fabricated by a variety of processing techniques and their resistivity and microstructure characterized. Electrical resistivity results from Y2O3 coatings as-deposited and after exposure to Li are presented. Self-healing and in situ coatings are being investigated based on CaO from Li-Ca and Er2O3 from Li-Er. Because there are likely to be cracks in any coatings, a dual-layer system with a thin outer layer of vanadium appears to be a more attractive MHD coating system. Published by Elsevier B.V.

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AN - SCOPUS:3342922740

SN - 0022-3115

VL - 329-333

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IS - 1-3 PART A

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ER -

Recent progress in the development of electrically insulating coatings for a liquid lithium blanket

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