Nickel-chromium (Ni–Cr) coatings deposited by magnetron sputtering for accident tolerant nuclear fuel claddings

Research output: Contribution to journalArticle

Abstract

Nickel-chromium coatings were deposited on Zr[sbnd]1Nb alloy using magnetron sputtering systems with «hot» Ni and cooled Cr targets. The effect of coating composition on high-temperature oxidation resistance and hydrogen uptake of Zr[sbnd]1Nb was studied. Hydrogen uptake of the alloy was measured in situ under gas-phase hydrogenation at 633 K. High-temperature oxidation was performed in air atmosphere at 1173–1373 K for 20 min. It was shown that the coating with high Ni content (83 at.%) drastically increases hydrogen uptake of the Zr[sbnd]1Nb alloy and demonstrates low oxidation resistance even at 1173 K. The coatings with Cr content ≥45 at.% have low hydrogen permeability which reduces the rate of hydrogen uptake of the alloy. The oxidation resistance of the Ni[sbnd]Cr coatings increases with Cr content in the as-deposited coatings. The pure Cr coating exhibits the best oxidation resistance: only 8 μm-thick oxide layer was observed. There is also found the intensive diffusion of nickel into the alloy during high-temperature oxidation of the samples coated by Ni[sbnd]Cr films with 55 and 17 at.% Ni. The as-deposited Ni[sbnd]Cr coatings are less brittle than the pure Cr coating, but their mechanical properties degrade stronger than for the Cr coating after the oxidation test.

Original languageEnglish
Pages (from-to)69-78
Number of pages10
JournalSurface and Coatings Technology
Volume369
DOIs
Publication statusPublished - 15 Jul 2019

Fingerprint

Nuclear fuel cladding
nuclear fuels
Chromium
accidents
Nickel
Magnetron sputtering
chromium
Accidents
magnetron sputtering
nickel
coatings
Coatings
oxidation resistance
Oxidation resistance
Hydrogen
Thermooxidation
hydrogen
oxidation
heat resistant alloys
Oxides

Keywords

  • Chromium
  • High-temperature oxidation
  • Hydrogen uptake
  • Nickel-chromium coatings
  • Nuclear fuel cladding
  • Zirconium alloy

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

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title = "Nickel-chromium (Ni–Cr) coatings deposited by magnetron sputtering for accident tolerant nuclear fuel claddings",
abstract = "Nickel-chromium coatings were deposited on Zr[sbnd]1Nb alloy using magnetron sputtering systems with «hot» Ni and cooled Cr targets. The effect of coating composition on high-temperature oxidation resistance and hydrogen uptake of Zr[sbnd]1Nb was studied. Hydrogen uptake of the alloy was measured in situ under gas-phase hydrogenation at 633 K. High-temperature oxidation was performed in air atmosphere at 1173–1373 K for 20 min. It was shown that the coating with high Ni content (83 at.{\%}) drastically increases hydrogen uptake of the Zr[sbnd]1Nb alloy and demonstrates low oxidation resistance even at 1173 K. The coatings with Cr content ≥45 at.{\%} have low hydrogen permeability which reduces the rate of hydrogen uptake of the alloy. The oxidation resistance of the Ni[sbnd]Cr coatings increases with Cr content in the as-deposited coatings. The pure Cr coating exhibits the best oxidation resistance: only 8 μm-thick oxide layer was observed. There is also found the intensive diffusion of nickel into the alloy during high-temperature oxidation of the samples coated by Ni[sbnd]Cr films with 55 and 17 at.{\%} Ni. The as-deposited Ni[sbnd]Cr coatings are less brittle than the pure Cr coating, but their mechanical properties degrade stronger than for the Cr coating after the oxidation test.",
keywords = "Chromium, High-temperature oxidation, Hydrogen uptake, Nickel-chromium coatings, Nuclear fuel cladding, Zirconium alloy",
author = "Sidelev, {Dmitrii V.} and Kashkarov, {Egor B.} and Syrtanov, {Maxim S.} and Krivobokov, {Valery P.}",
year = "2019",
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journal = "Surface and Coatings Technology",
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TY - JOUR

T1 - Nickel-chromium (Ni–Cr) coatings deposited by magnetron sputtering for accident tolerant nuclear fuel claddings

AU - Sidelev, Dmitrii V.

AU - Kashkarov, Egor B.

AU - Syrtanov, Maxim S.

AU - Krivobokov, Valery P.

PY - 2019/7/15

Y1 - 2019/7/15

N2 - Nickel-chromium coatings were deposited on Zr[sbnd]1Nb alloy using magnetron sputtering systems with «hot» Ni and cooled Cr targets. The effect of coating composition on high-temperature oxidation resistance and hydrogen uptake of Zr[sbnd]1Nb was studied. Hydrogen uptake of the alloy was measured in situ under gas-phase hydrogenation at 633 K. High-temperature oxidation was performed in air atmosphere at 1173–1373 K for 20 min. It was shown that the coating with high Ni content (83 at.%) drastically increases hydrogen uptake of the Zr[sbnd]1Nb alloy and demonstrates low oxidation resistance even at 1173 K. The coatings with Cr content ≥45 at.% have low hydrogen permeability which reduces the rate of hydrogen uptake of the alloy. The oxidation resistance of the Ni[sbnd]Cr coatings increases with Cr content in the as-deposited coatings. The pure Cr coating exhibits the best oxidation resistance: only 8 μm-thick oxide layer was observed. There is also found the intensive diffusion of nickel into the alloy during high-temperature oxidation of the samples coated by Ni[sbnd]Cr films with 55 and 17 at.% Ni. The as-deposited Ni[sbnd]Cr coatings are less brittle than the pure Cr coating, but their mechanical properties degrade stronger than for the Cr coating after the oxidation test.

AB - Nickel-chromium coatings were deposited on Zr[sbnd]1Nb alloy using magnetron sputtering systems with «hot» Ni and cooled Cr targets. The effect of coating composition on high-temperature oxidation resistance and hydrogen uptake of Zr[sbnd]1Nb was studied. Hydrogen uptake of the alloy was measured in situ under gas-phase hydrogenation at 633 K. High-temperature oxidation was performed in air atmosphere at 1173–1373 K for 20 min. It was shown that the coating with high Ni content (83 at.%) drastically increases hydrogen uptake of the Zr[sbnd]1Nb alloy and demonstrates low oxidation resistance even at 1173 K. The coatings with Cr content ≥45 at.% have low hydrogen permeability which reduces the rate of hydrogen uptake of the alloy. The oxidation resistance of the Ni[sbnd]Cr coatings increases with Cr content in the as-deposited coatings. The pure Cr coating exhibits the best oxidation resistance: only 8 μm-thick oxide layer was observed. There is also found the intensive diffusion of nickel into the alloy during high-temperature oxidation of the samples coated by Ni[sbnd]Cr films with 55 and 17 at.% Ni. The as-deposited Ni[sbnd]Cr coatings are less brittle than the pure Cr coating, but their mechanical properties degrade stronger than for the Cr coating after the oxidation test.

KW - Chromium

KW - High-temperature oxidation

KW - Hydrogen uptake

KW - Nickel-chromium coatings

KW - Nuclear fuel cladding

KW - Zirconium alloy

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