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 language | English |
|---|---|
| Pages (from-to) | 69-78 |
| Number of pages | 10 |
| Journal | Surface and Coatings Technology |
| Volume | 369 |
| DOIs | |
| Publication status | Published - 15 Jul 2019 |
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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
Nickel-chromium (Ni–Cr) coatings deposited by magnetron sputtering for accident tolerant nuclear fuel claddings. / Sidelev, Dmitrii V.; Kashkarov, Egor B.; Syrtanov, Maxim S.; Krivobokov, Valery P.
In: Surface and Coatings Technology, Vol. 369, 15.07.2019, p. 69-78.Research output: Contribution to journal › Article
}
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
UR - http://www.scopus.com/inward/record.url?scp=85064641186&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85064641186&partnerID=8YFLogxK
U2 - 10.1016/j.surfcoat.2019.04.057
DO - 10.1016/j.surfcoat.2019.04.057
M3 - Article
VL - 369
SP - 69
EP - 78
JO - Surface and Coatings Technology
JF - Surface and Coatings Technology
SN - 0257-8972
ER -