High-temperature oxidation and quenching of chromium-coated zirconium alloy ATF cladding tubes with and w/o pre-damage

2021 ◽  
pp. 153470
Author(s):  
M. Steinbrück ◽  
U. Stegmaier ◽  
M. Große ◽  
L. Czerniak ◽  
E. Lahoda ◽  
...  
Keyword(s):  
High Temperature ◽  
Zirconium Alloy ◽  
High Temperature Oxidation ◽  
Temperature Oxidation

scholarly journals In-situ time-resolved study of structural evolutions in a zirconium alloy during high temperature oxidation and cooling

2019 ◽  
Vol 158 ◽  
pp. 109971 ◽  
Author(s):  
R. Guillou ◽  
M. Le Saux ◽  
E. Rouesne ◽  
D. Hamon ◽  
C. Toffolon-Masclet ◽  
...  
Keyword(s):  
High Temperature ◽  
Zirconium Alloy ◽  
High Temperature Oxidation ◽  
Time Resolved ◽  
Temperature Oxidation

On the problems of creating shells of fuel rods from zirconium alloys for tolerant fuel

2021 ◽  
Vol 3 ◽  
pp. 69-78
Author(s):  
A. A. Yakushkin ◽  
Keyword(s):  
High Temperature ◽  
Production Technology ◽  
Zirconium Alloy ◽  
High Temperature Oxidation ◽  
Fuel Cladding ◽  
Temperature Oxidation ◽  
Corrosion Resistant ◽  
Fuel Rod ◽  
Kinetics Of ◽  
Corrosion Resistant Coating

Three directions of the establishment of accident tolerant fuel cladding for light water reactors are actively exploring at present: 1) replacement zirconium alloy E110 for more corrosion-resistant material in accident operation conditions; 2) surface dispersion hardening or doping of the zirconium cladding of fuel element; 3) deposition a corrosion-resistant coating to the fuel cladding. The first direction requires significant and irreversible changes in fuel rod production technology and has long-term prospects. Conversely, the second direction suggest minimal changes in the fuel rod production technology, however, it has no significant effect on the high temperature oxidation kinetics of fuel claddings in steam. Using of a corrosion resistant coating results in a significant change in the high temperature oxidation kinetics of the zirconium alloy, (no transition to linear oxidation) that is related to maintaining the continuity of the oxide layer formed during oxidation. The issue provides a brief overview of the current state of research in the field of fuel, tolerant to the effects of coolant in emergency situations.

Effect of Copper Addition on the High Temperature Oxidation of Zirconium Alloy ZrNbMoGe for Advanced Reactor Fuel Cladding Material

2014 ◽  
Vol 896 ◽  
pp. 617-620 ◽  
Author(s):  
Bernardus Bandriyana ◽  
Djoko Hadi Prajitno ◽  
Arbi Dimyati
Keyword(s):  
High Temperature ◽  
Zirconium Alloy ◽  
High Temperature Oxidation ◽  
Zirconium Alloys ◽  
Magnetic Suspension ◽  
Pressurized Water ◽  
Temperature Oxidation ◽  
Copper Addition ◽  
Effect Of Copper ◽  
Cladding Material

The zirconium alloys ZrNbMoGe have been developed with the aim to improve its high temperature oxidation for employment as a cladding material in Pressurized Water Reactor (PWR) and to extend the over all fuel burn-up. In this paper the effect of Cu addition on the high temperature oxidation behavior of ZrNbMoGe alloy was investigated. The zirconium alloy was produced by melting the zirconium-niobium-molybdenum-germanium and copper-sponge in an arc furnace in an argon environment by the temperature higher than 1850C. The weight percentages of the elements were 2.50 wt.% Nb, 0.5 wt.% Mo, 0.1 wt.% Ge, 0.5 wt.% Cu and Zr in balanced. The oxidation test was carried out in the Magnetic Suspension Balance (MSB) workstation. Two specimens of ZrNbMoGe alloys without and with Cu addition were oxidized in atmosphere at temperature of 500 °C and 700 °C for 8 hours. The results show the oxidation kinetics followed the parabolic rate law. The difference of oxidation behaviors of the two specimens were considered to be caused by the formation of different kind of oxide layers due to the Cu addition.

Towards a better understanding of the oxide film growth mechanism in E110 zirconium alloy under high-temperature oxidation in steam

2020 ◽  
Vol 38 (2) ◽  
pp. 165-181
Author(s):  
Andrey B. Rozhnov ◽  
Hannanh Alsheikh ◽  
Sergey A. Nikulin ◽  
Vladislav A. Belov ◽  
Elina V. Li ◽  
...  
Keyword(s):  
High Temperature ◽  
Oxide Film ◽  
Zirconium Alloy ◽  
High Temperature Oxidation ◽  
Film Growth ◽  
Surface Oxide Film ◽  
Temperature Oxidation ◽  
Interface Growth ◽  
White Spots ◽  
Alloy Oxidation

AbstractHigh-temperature oxidation of E110 (Zr-1%Nb) zirconium alloy in steam at Т = 1100°C to various degrees has been carried out. Based on the studies of morphology and microstructure of the oxide film and metal, as well as on review of previously published results, the mechanism of alloy oxidation has been proposed, which includes oxide thickening close to the oxide/metal interface, growth of the thickened areas and their conversion into nodules, growth of the nodules and crowning of the metal surface (white spots), clustering of nodules under the formed oxide, formation of a double (white on the surface) oxide film and delamination of the oxide upper layer.

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