Energetic particle irradiation study of TiN coatings: are these films appropriate for accident tolerant fuels?

Matheus A. Tunes, Felipe C. Da Silva, Osmane Camara, Claudio G. Schön, Julio C. Sagás, Luis C. Fontana, Stephen E. Donnelly, Graeme Greaves, Philip D. Edmondson

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Coating nuclear fuel cladding alloys with hard thin films has been considered as an innovative solution to increase the safety of nuclear reactors, in particular during a of loss-of-coolant accident (LOCA). In this context, and due to its suitable mechanical properties and high corrosion resistance, titanium nitride thin films have been proposed as candidate coatings for zirconium alloys in new accident tolerant fuels for light water reactors. Although the properties of TiN hard coatings are known to be adequate for such applications, the understanding of how the exposure to energetic particle irradiation changes the microstructure and properties of these thin films is still not fully understood. Herein, we report on heavy ion irradiation in situ within a Transmission Electron Microscopy (TEM) of magnetron-sputtered TiN thin films. The coatings were irradiated with 134 keV Xe + ions at 473 K to a fluence of 6.7 × 1015 ions⋅cm−2 corresponding to 6.2 displacements-per-atom where significative microstructural alterations have been observed. Post-irradiation analytic characterisation with Energy Filtered TEM and Energy-Dispersive X-ray spectroscopy carried out in a Scanning Transmission Electron Microscope indicates that TiN thin films are subjected to radiation-induced segregation. Additionally, the nucleation and growth of Xe bubbles appears to play a major role in the dissociation of the TiN thin film.
LanguageEnglish
Pages239-245
Number of pages7
JournalJournal of Nuclear Materials
Volume512
Early online date13 Oct 2018
DOIs
Publication statusPublished - 15 Dec 2018

Fingerprint

energetic particles
accidents
Accidents
Irradiation
coatings
Thin films
Coatings
irradiation
thin films
Nuclear fuel cladding
loss of coolant
Ions
light water reactors
zirconium alloys
Transmission electron microscopy
Heavy Ions
Zirconium alloys
Hard coatings
transmission electron microscopy
Loss of coolant accidents

Cite this

Tunes, M. A., Da Silva, F. C., Camara, O., Schön, C. G., Sagás, J. C., Fontana, L. C., ... Edmondson, P. D. (2018). Energetic particle irradiation study of TiN coatings: are these films appropriate for accident tolerant fuels? Journal of Nuclear Materials, 512, 239-245. https://doi.org/10.1016/j.jnucmat.2018.10.013
Tunes, Matheus A. ; Da Silva, Felipe C. ; Camara, Osmane ; Schön, Claudio G. ; Sagás, Julio C. ; Fontana, Luis C. ; Donnelly, Stephen E. ; Greaves, Graeme ; Edmondson, Philip D. / Energetic particle irradiation study of TiN coatings : are these films appropriate for accident tolerant fuels?. In: Journal of Nuclear Materials. 2018 ; Vol. 512. pp. 239-245.
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Energetic particle irradiation study of TiN coatings : are these films appropriate for accident tolerant fuels? / Tunes, Matheus A.; Da Silva, Felipe C.; Camara, Osmane; Schön, Claudio G.; Sagás, Julio C.; Fontana, Luis C.; Donnelly, Stephen E.; Greaves, Graeme; Edmondson, Philip D.

In: Journal of Nuclear Materials, Vol. 512, 15.12.2018, p. 239-245.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Energetic particle irradiation study of TiN coatings

T2 - Journal of Nuclear Materials

AU - Tunes, Matheus A.

AU - Da Silva, Felipe C.

AU - Camara, Osmane

AU - Schön, Claudio G.

AU - Sagás, Julio C.

AU - Fontana, Luis C.

AU - Donnelly, Stephen E.

AU - Greaves, Graeme

AU - Edmondson, Philip D.

PY - 2018/12/15

Y1 - 2018/12/15

N2 - Coating nuclear fuel cladding alloys with hard thin films has been considered as an innovative solution to increase the safety of nuclear reactors, in particular during a of loss-of-coolant accident (LOCA). In this context, and due to its suitable mechanical properties and high corrosion resistance, titanium nitride thin films have been proposed as candidate coatings for zirconium alloys in new accident tolerant fuels for light water reactors. Although the properties of TiN hard coatings are known to be adequate for such applications, the understanding of how the exposure to energetic particle irradiation changes the microstructure and properties of these thin films is still not fully understood. Herein, we report on heavy ion irradiation in situ within a Transmission Electron Microscopy (TEM) of magnetron-sputtered TiN thin films. The coatings were irradiated with 134 keV Xe + ions at 473 K to a fluence of 6.7 × 1015 ions⋅cm−2 corresponding to 6.2 displacements-per-atom where significative microstructural alterations have been observed. Post-irradiation analytic characterisation with Energy Filtered TEM and Energy-Dispersive X-ray spectroscopy carried out in a Scanning Transmission Electron Microscope indicates that TiN thin films are subjected to radiation-induced segregation. Additionally, the nucleation and growth of Xe bubbles appears to play a major role in the dissociation of the TiN thin film.

AB - Coating nuclear fuel cladding alloys with hard thin films has been considered as an innovative solution to increase the safety of nuclear reactors, in particular during a of loss-of-coolant accident (LOCA). In this context, and due to its suitable mechanical properties and high corrosion resistance, titanium nitride thin films have been proposed as candidate coatings for zirconium alloys in new accident tolerant fuels for light water reactors. Although the properties of TiN hard coatings are known to be adequate for such applications, the understanding of how the exposure to energetic particle irradiation changes the microstructure and properties of these thin films is still not fully understood. Herein, we report on heavy ion irradiation in situ within a Transmission Electron Microscopy (TEM) of magnetron-sputtered TiN thin films. The coatings were irradiated with 134 keV Xe + ions at 473 K to a fluence of 6.7 × 1015 ions⋅cm−2 corresponding to 6.2 displacements-per-atom where significative microstructural alterations have been observed. Post-irradiation analytic characterisation with Energy Filtered TEM and Energy-Dispersive X-ray spectroscopy carried out in a Scanning Transmission Electron Microscope indicates that TiN thin films are subjected to radiation-induced segregation. Additionally, the nucleation and growth of Xe bubbles appears to play a major role in the dissociation of the TiN thin film.

KW - Radiation Damage

KW - Accident Tolerant Fuels

KW - Ion Irradiaton with in situ TEM

KW - Thin Films

KW - Titanium Nitride

U2 - 10.1016/j.jnucmat.2018.10.013

DO - 10.1016/j.jnucmat.2018.10.013

M3 - Article

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EP - 245

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

ER -