Parallel mechanism of growth of the oxide and α-Zr(O) layers on Zircaloy-4 oxidized in steam at high temperatures
Source abstract
Abstract
Abstract The kinetic behavior of Zircaloy-4 tube samples was examined during high temperature steam oxidation in order to propose a mechanism with detailed elementary steps. The study revealed that steam and hydrogen partial pressures have no effect on the reaction kinetics. Based on these experiments, the kinetic model established herein takes into account the oxide growth and the oxygen dissolution in the metal. A rate-determining step of diffusion of oxygen vacancies in the oxide governs the kinetics of the reaction in both pre- and post-breakaway regimes meaning that the oxide growth and oxygen dissolution in the metal advance at proportional rates.
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Research context
OpenAlex topics: Nuclear Materials and Properties · Metallurgical Processes and Thermodynamics · High-Temperature Coating Behaviors
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References (43)
Show source-provided references
1. U.N.R. Commission · 2007
2. Pettersson · 2009
3. Studies of metal-water reactions at high temperatures III. Experimental and theoretical studies of the zirconium-water reaction
4. Oxidation kinetics and related phenomena of zircaloy-4 fuel cladding exposed to high temperature steam and hydrogen-steam mixtures under PWR accident conditions10.1016/0029-5493(87)90286-X ↗
5. The oxidation behavior of Zircaloy-4 in steam between 600 and 1600° C10.1002/maco.19850360302 ↗
6. High-temperature oxidation of zircaloy-2 and zircaloy-4 in steam10.1016/0022-3115(78)90006-5 ↗
7. Reaction behavior of zircaloy-4 in steam-hydrogen mixtures at high temperature10.1016/0022-3115(82)90366-X ↗
8. The kinetics of oxidation of Zircaloy-4 in steam at high temperatures10.1149/1.2129227 ↗
9. Schanz · 1984
10. Oxidation kinetics of low-Sn Zircaloy-4 at the temperature range from 773 to 1,573 K10.1080/18811248.2003.9715351 ↗
11. Air oxidation of Zircaloy-4, M5® and ZIRLOTM cladding alloys at high temperatures10.1016/j.jnucmat.2011.04.012 ↗
12. Some thoughts on the mechanisms of in-reactor corrosion of zirconium alloys10.1016/j.jnucmat.2004.09.029 ↗
13. Leistikow · 1983
14. Billone · 2008
15. Breakaway phenomenon of Zr-based alloys during a high-temperature oxidation10.1016/j.jnucmat.2007.02.011 ↗
16. Pressure effects on high temperature steam oxidation of zircaloy-410.1007/BF03186081 ↗
17. Oxidation kinetics of Zircaloy-4 and Zr–1Nb–1Sn–0.1Fe at temperatures of 700–1200°C10.1016/j.jnucmat.2004.08.007 ↗
18. Breakaway characterization of Zircaloy-4 oxidized in steam and in oxygen at high temperatures using HT- XRD analysis10.1016/j.corsci.2020.109028 ↗
19. Comparative studies on high-temperature corrosion of ZrNb1 and Zircaloy-410.1016/0029-5493(94)90256-9 ↗
20. Transformations and cracks in zirconia films leading to breakaway oxidation of Zircaloy10.1016/j.actamat.2013.02.052 ↗
21. Microstructural characterization of ZrO2 layers formed during the transition to breakaway oxidation10.1016/j.jnucmat.2010.01.021 ↗
22. Etude micrographique du processus de desquamation (“break-away”) au cours de l’oxydation du zirconium10.1016/0022-5088(68)90114-8 ↗
23. The oxidation of zircaloy-4 at 900 and 1100°c in high pressure steam10.1016/0022-3115(79)90045-X ↗
24. Differences in reactivity of oxide growth during the oxidation of Zircaloy-4 in water vapour before and after the kinetic transition10.1016/S0022-3115(02)01704-X ↗
25. Corrosion kinetics under high pressure of steam of pure zirconium and zirconium alloys followed by in situ thermogravimetry10.1016/j.jnucmat.2012.03.030 ↗
26. Lasserre-Gagnaire · 2013
27. Experimental study of oxidation in oxygen, nitrogen and steam mixtures at 850∘C of pre-oxidized Zircaloy-410.1016/j.jnucmat.2019.03.020 ↗
28. Soustelle · 2010
29. Chapter 5 - kinetics and mechanisms of solid-gas reactions
30. Experimental tests to validate the rate-limiting step assumption used in the kinetic analysis of solid-state reactions10.1016/j.tca.2008.08.013 ↗
31. Experimental methods useful in the kinetic modelling of heterogeneous reactions10.1016/S0167-2738(96)00562-0 ↗
32. Cathcart · 1977
33. Influence of Long service exposures on the thermal-mechanical behavior of Zy-4 and M5TM alloys in LOCA conditions
34. Comparison of the high-temperature steam oxidation kinetics of advanced cladding materials10.13182/NT10-A9464 ↗
35. Oxidation of advanced zirconium cladding alloys in steam at temperatures in the range of 600–1200 °C10.1007/s11085-011-9249-3 ↗
36. A study of the breakaway oxidation behavior of zirconium cladding materials
37. Debuigne · 1966
38. Verification of the from model for zircaloy oxidation during high temperature transients10.1016/0022-3115(85)90292-2 ↗
39. Oxidation kinetics and oxygen diffusion in low-tin Zircaloy-4 up to 1523K10.1016/j.jnucmat.2008.03.012 ↗
40. Thermal oxidation of titanium by water vapour10.1016/S0167-2738(97)00400-1 ↗
41. Kröger · 1964
42. FactSage thermochemical software and databases, 2010–201610.1016/j.calphad.2016.05.002 ↗
43. A thermodynamic database for zirconium alloys10.1016/S0022-3115(99)00125-7 ↗