Multilayer (TiN, TiAlN) ceramic coatings for nuclear fuel cladding

Ece Alat, Arthur T. Motta, Robert J. Comstock, Jonna M. Partezana, Douglas E. Wolfe

Research output: Contribution to journalArticle

73 Citations (Scopus)

Abstract

In an attempt to develop an accident-tolerant fuel (ATF) that can delay the deleterious consequences of loss-of-coolant-accidents (LOCA), multilayer coatings were deposited onto ZIRLO® coupon substrates by cathodic arc physical vapor deposition (CA-PVD). Coatings were composed of alternating TiN (top) and Ti1-xAlxN (2-layer, 4-layer, 8-layer and 16-layer) layers. The minimum TiN top coating thickness and coating architecture were optimized for good corrosion and oxidation resistance. Corrosion tests were performed in static pure water at 360 °C and 18.7 MPa for up to 90 days. The optimized coatings showed no spallation/delamination and had a maximum of 6 mg/dm2 weight gain, which is 6 times smaller than that of a control sample of uncoated ZIRLO® which showed a weight gain of 40.2 mg/dm2. The optimized architecture features a ∼1 μm TiN top layer to prevent boehmite phase formation during corrosion and a TiN/TiAlN 8-layer architecture which provides the best corrosion performance.

Original languageEnglish (US)
Pages (from-to)236-244
Number of pages9
JournalJournal of Nuclear Materials
Volume478
DOIs
StatePublished - Sep 1 2016

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Nuclear fuel cladding
ceramic coatings
Ceramic coatings
nuclear fuels
Multilayers
Coatings
coatings
Corrosion
accidents
Loss of coolant accidents
corrosion
Oxidation resistance
Physical vapor deposition
loss of coolant
Delamination
corrosion tests
Corrosion resistance
Accidents
oxidation resistance
spallation

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

Cite this

Alat, Ece ; Motta, Arthur T. ; Comstock, Robert J. ; Partezana, Jonna M. ; Wolfe, Douglas E. / Multilayer (TiN, TiAlN) ceramic coatings for nuclear fuel cladding. In: Journal of Nuclear Materials. 2016 ; Vol. 478. pp. 236-244.
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Multilayer (TiN, TiAlN) ceramic coatings for nuclear fuel cladding. / Alat, Ece; Motta, Arthur T.; Comstock, Robert J.; Partezana, Jonna M.; Wolfe, Douglas E.

In: Journal of Nuclear Materials, Vol. 478, 01.09.2016, p. 236-244.

Research output: Contribution to journalArticle

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