High-temperature oxidation and quench behaviour of Zircaloy-4 and E110 cladding alloys

Steinbrück, M.; Birchley, J.; Boldyrev, A.V.; Goryachev, A. V.; Große, M.; Haste, T.; Hózer, Zoltán; Kisselev, Arcadii E.; Nalivaev, V. I.; Semishkin, V.P.; Sepold, L.; Stuckert, J.; Vér, N.; Veshchunov, M.S.

doi:10.1016/j.pnucene.2009.07.012

Cited by 60 publications

(19 citation statements)

References 17 publications

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“…From the charactristic of parabolic kinetics, it is obvious that the oxide formation on the samples is oxygen inward diffusion driven process inside the oxide layer. This stands in agreement with the well known high temperature oxidation characteristics of zirconium alloy [12,13]. The mechanism of high-temperature oxidation of zirconium alloy is widely accepted to be the diffusion of oxygen anions through the ZrO 2 lattice [14,15].…”

Section: Iconets Conference Proceedingssupporting

confidence: 88%

Effect Of -Quenching On Oxidation Resistance Of Zirconium Alloyzrnbmoge For Fuel Cladding Material

Bandriyana¹

2016

KEn

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Effect of ß-quenching of Zr-2.5Nb-0.5Mo-0.1Ge alloy used for advanced fuel cladding material of Pressurized Water Reactor (PWR) was investigated. The aim of this research is to improve the mechanical and corrosion properties through modification of the alloy with regard to high reactor burn up. The quenching process was conducted by heating the sample at temperature of 950 o C and soaking 2.5 hours, followed by quenching in water at room temperature and then continued with annealing process at 500 and 600 o C. The change of hardness and oxidation resistance were characterized using optical microscope and scanning electron microscope (SEM). The effect on the oxidation resistance was investigated by the high temperature oxidation test using the MSB (Magnetic Suspension Balance) at 700 o C for 5 hours. The hardness increased from 217 VHN to 265 VHN after quenching due to grain refinement and precipitation hardening. The oxidation rate followed the typical parabolic growth characteristic. The formation of thin layer was considered to be a stable oxide ZrO 2 that influenced the oxidation characteristic and increasing the hardness of the alloy.

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Section: Iconets Conference Proceedingssupporting

confidence: 88%

Effect Of -Quenching On Oxidation Resistance Of Zirconium Alloyzrnbmoge For Fuel Cladding Material

Bandriyana¹

2016

KEn

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“…Oxides grown on pure zirconium were less permeable that those on multiphase alloys because of a greater number of grain boundaries, interfaces and diffusion pathways [12]. Significant differences between the alloys were found in the temperature range 870-1320K, and the breakaway of Zircaloy-4 was reported to be significant at 1000°C and above [13].…”

Section: Oxidationmentioning

confidence: 99%

“…The oxidation in air is strongly influenced by the breakaway effect, as the nitrogen diffusion through cracks to the metal-oxide interface results in nitride formation [1,13]. The oxide layer may be then be degraded by local inclusions of zirconium nitride.…”

Section: Oxidationmentioning

confidence: 99%

Hydrogen degradation of pre-oxidized zirconium alloys

Szoka

Gajowiec

Zieliński

et al. 2017

Advances in Materials Science

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The presence of the oxide layers on Zr alloys may retard or enhance the hydrogen entry and material degradation, depending on the layer features. This research has been aimed to determine the effects of preoxidation of the Zircaloy-2 alloy at a different temperature on hydrogen degradation. The specimens were oxidised in laboratory air at 350ºC, 700ºC, and 900ºC. After, some samples were tensed at 10-5 strain rate and simultaneously charged with hydrogen under constant direct voltage in 1 N sulfuric acid at room temperature. Other specimens were charged without any tension, then annealed at 400ºC for 4 h and finally tensed at above strain rate. The SEM examinations were performed on the cross-sections and fracture faces of specimens. The obtained results demonstrate the effects of the oxide layer on the cathodic current and hydrogen entry, mechanical properties and the appearance of hydrides and fracture behaviour.

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“…and Zry-4, in different atmospheres have been conducted (Grosse [4]; Steinbruck et al [5]; Hozer et al [6]) in Germany and Hungary.…”

Section: Introductionmentioning

confidence: 99%

Proposal of new oxidation kinetics for sponge base E110 cladding tubes material

Krejčí

Vrtílková

Gajdoš

et al. 2017

EPJ Nuclear Sci. Technol.

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Abstract. Study of high temperature steam oxidation kinetics during the high temperature oxidation was carried out on the sponge base E110 cladding tubes material in the temperature range 600-1300°C. The oxidation kinetics derived from the weight gain measurements showed a parabolic rate law for temperatures 1100°C and higher only. For lower temperatures in range 800-1050°C especially, the parabolic law leads to very conservative prediction. Therefore, the new oxidation kinetics, different from the parabolic law, was designed. The experimental database containing more than 800 data points was compared with the new developed UJP-correlation and available correlations for E110 and Zircaloy alloys. Statistical analysis for all tested correlations was provided.

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High-temperature oxidation and quench behaviour of Zircaloy-4 and E110 cladding alloys

Cited by 60 publications

References 17 publications

Effect Of -Quenching On Oxidation Resistance Of Zirconium Alloyzrnbmoge For Fuel Cladding Material

Effect Of -Quenching On Oxidation Resistance Of Zirconium Alloyzrnbmoge For Fuel Cladding Material

Hydrogen degradation of pre-oxidized zirconium alloys

Proposal of new oxidation kinetics for sponge base E110 cladding tubes material

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