Abstract
Hydrogen pickup during nuclear fuel cladding corrosion is a critical life-limiting degradation mechanism for nuclear fuel. Following a program dedicated to zirconium alloys, corrosion, it has been hypothesized that oxide electronic resistivity determines hydrogen pickup. In-situ electrochemical impedance spectroscopy experiments were performed on Zircaloy-4 and Zr-2.5Nb alloys in 360 °C water. The oxide resistivity was measured as function of time. The results show that as the oxide resistivity increases so does the hydrogen pickup fraction. The resistivity of the oxide layer formed on Zircaloy-4 is higher than on Zr-2.5Nb, resulting in a higher hydrogen pickup fraction of Zircaloy-4, compared to Zr-2.5Nb.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1-13 |
| Number of pages | 13 |
| Journal | Corrosion Science |
| Volume | 119 |
| DOIs | |
| State | Published - May 1 2017 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Chemical Engineering(all)
- Materials Science(all)
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In-situ electrochemical impedance spectroscopy measurements of zirconium alloy oxide conductivity : Relationship to hydrogen pickup. / Couet, Adrien; Motta, Arthur Thompson; Ambard, Antoine; Livigni, Didier.
In: Corrosion Science, Vol. 119, 01.05.2017, p. 1-13.Research output: Contribution to journal › Article
TY - JOUR
T1 - In-situ electrochemical impedance spectroscopy measurements of zirconium alloy oxide conductivity
T2 - Relationship to hydrogen pickup
AU - Couet, Adrien
AU - Motta, Arthur Thompson
AU - Ambard, Antoine
AU - Livigni, Didier
PY - 2017/5/1
Y1 - 2017/5/1
N2 - Hydrogen pickup during nuclear fuel cladding corrosion is a critical life-limiting degradation mechanism for nuclear fuel. Following a program dedicated to zirconium alloys, corrosion, it has been hypothesized that oxide electronic resistivity determines hydrogen pickup. In-situ electrochemical impedance spectroscopy experiments were performed on Zircaloy-4 and Zr-2.5Nb alloys in 360 °C water. The oxide resistivity was measured as function of time. The results show that as the oxide resistivity increases so does the hydrogen pickup fraction. The resistivity of the oxide layer formed on Zircaloy-4 is higher than on Zr-2.5Nb, resulting in a higher hydrogen pickup fraction of Zircaloy-4, compared to Zr-2.5Nb.
AB - Hydrogen pickup during nuclear fuel cladding corrosion is a critical life-limiting degradation mechanism for nuclear fuel. Following a program dedicated to zirconium alloys, corrosion, it has been hypothesized that oxide electronic resistivity determines hydrogen pickup. In-situ electrochemical impedance spectroscopy experiments were performed on Zircaloy-4 and Zr-2.5Nb alloys in 360 °C water. The oxide resistivity was measured as function of time. The results show that as the oxide resistivity increases so does the hydrogen pickup fraction. The resistivity of the oxide layer formed on Zircaloy-4 is higher than on Zr-2.5Nb, resulting in a higher hydrogen pickup fraction of Zircaloy-4, compared to Zr-2.5Nb.
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U2 - 10.1016/j.corsci.2016.12.008
DO - 10.1016/j.corsci.2016.12.008
M3 - Article
AN - SCOPUS:85013414522
VL - 119
SP - 1
EP - 13
JO - Corrosion Science
JF - Corrosion Science
SN - 0010-938X
ER -