Thermal stability of fission gas bubble superlattice in irradiated U-10Mo fuel

Jian Gan; D. D. Keiser; B. D. Miller; A. B. Robinson; D. M. Wachs; M. K. Meyer

doi:10.1016/j.jnucmat.2015.04.023

Thermal stability of fission gas bubble superlattice in irradiated U-10Mo fuel

Jian Gan, D. D. Keiser, B. D. Miller, A. B. Robinson, D. M. Wachs, M. K. Meyer

Materials and Fuels Complex

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

To investigate the thermal stability of the fission gas bubble superlattice, a key microstructural feature in both irradiated U-7Mo dispersion and U-10Mo monolithic fuel plates, a focused ion beam-transmission electron microscopy (FIB-TEM) sample of irradiated U-10Mo fuel with a local fission density of 3.5 × 10²¹ fissions/cm³ was used for an in-situ heating TEM experiment. The temperature of the heating holder was raised at a ramp rate of approximately 10°C/min up to ∼700°C, kept at that temperature for about 34 min and further increased to 850°C with a reduced rate of 5°C/min. The result shows a high thermal stability of the fission gas bubble superlattice. The implication of this observation on the fuel microstructural evolution and performance under irradiation is discussed.

Original language	English
Pages (from-to)	1-5
Number of pages	5
Journal	Journal of Nuclear Materials
Volume	464
DOIs	https://doi.org/10.1016/j.jnucmat.2015.04.023
State	Published - Apr 21 2015

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title = "Thermal stability of fission gas bubble superlattice in irradiated U-10Mo fuel",

abstract = "To investigate the thermal stability of the fission gas bubble superlattice, a key microstructural feature in both irradiated U-7Mo dispersion and U-10Mo monolithic fuel plates, a focused ion beam-transmission electron microscopy (FIB-TEM) sample of irradiated U-10Mo fuel with a local fission density of 3.5 × 1021 fissions/cm3 was used for an in-situ heating TEM experiment. The temperature of the heating holder was raised at a ramp rate of approximately 10°C/min up to ∼700°C, kept at that temperature for about 34 min and further increased to 850°C with a reduced rate of 5°C/min. The result shows a high thermal stability of the fission gas bubble superlattice. The implication of this observation on the fuel microstructural evolution and performance under irradiation is discussed.",

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T1 - Thermal stability of fission gas bubble superlattice in irradiated U-10Mo fuel

AU - Gan, Jian

AU - Keiser, D. D.

AU - Miller, B. D.

AU - Robinson, A. B.

AU - Wachs, D. M.

AU - Meyer, M. K.

PY - 2015/4/21

Y1 - 2015/4/21

N2 - To investigate the thermal stability of the fission gas bubble superlattice, a key microstructural feature in both irradiated U-7Mo dispersion and U-10Mo monolithic fuel plates, a focused ion beam-transmission electron microscopy (FIB-TEM) sample of irradiated U-10Mo fuel with a local fission density of 3.5 × 1021 fissions/cm3 was used for an in-situ heating TEM experiment. The temperature of the heating holder was raised at a ramp rate of approximately 10°C/min up to ∼700°C, kept at that temperature for about 34 min and further increased to 850°C with a reduced rate of 5°C/min. The result shows a high thermal stability of the fission gas bubble superlattice. The implication of this observation on the fuel microstructural evolution and performance under irradiation is discussed.

AB - To investigate the thermal stability of the fission gas bubble superlattice, a key microstructural feature in both irradiated U-7Mo dispersion and U-10Mo monolithic fuel plates, a focused ion beam-transmission electron microscopy (FIB-TEM) sample of irradiated U-10Mo fuel with a local fission density of 3.5 × 1021 fissions/cm3 was used for an in-situ heating TEM experiment. The temperature of the heating holder was raised at a ramp rate of approximately 10°C/min up to ∼700°C, kept at that temperature for about 34 min and further increased to 850°C with a reduced rate of 5°C/min. The result shows a high thermal stability of the fission gas bubble superlattice. The implication of this observation on the fuel microstructural evolution and performance under irradiation is discussed.

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Thermal stability of fission gas bubble superlattice in irradiated U-10Mo fuel

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