Heavy ion irradiation damage in Zr2AlC MAX phase

Heavy ion irradiation damage in Zr2AlC MAX phase

Zr2AlC MAX phase-based ceramic material with 33 wt% ZrC has been irradiated with 22 MeV Au7+ ions between room temperature and 600 °C, achieving a maximum nominal midrange dose of 3.5 displacements per atom. The response of the material to irradiation has been studied using scanning electron microsc...

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Bibliographic Details
Published in:Journal of nuclear materials Vol. 523; pp. 1 - 9
Main Authors: Qarra, H.H., Knowles, K.M., Vickers, M.E., Akhmadaliev, Sh, Lambrinou, K.
Format: Journal Article
Language:English
Published: Amsterdam Elsevier B.V 01-09-2019
Elsevier BV
Subjects:
Crack initiation
Dislocation density
Dosage
Fracture mechanics
Heavy ions
High temperature
Ion irradiation
Irradiation
Microcracks
Microscopy
Radiation damage
Scanning electron microscopy
Stacking faults
Temperature
Temperature dependence
Temperature effects
Transmission electron microscopy
X-ray diffraction
Zirconium carbide
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Description
Summary:Zr2AlC MAX phase-based ceramic material with 33 wt% ZrC has been irradiated with 22 MeV Au7+ ions between room temperature and 600 °C, achieving a maximum nominal midrange dose of 3.5 displacements per atom. The response of the material to irradiation has been studied using scanning electron microscopy, transmission electron microscopy and X-ray diffraction. Under room temperature irradiation, the ions caused a partial amorphisation of the MAX phase. At high temperatures, irradiated Zr2AlC remained crystalline, but developed an increased density of dislocations and stacking faults in the (0001) basal planes. The irradiated material also exhibited a temperature-dependent microcracking phenomenon similar to that previously reported in other MAX phase materials.
ISSN:0022-3115
1873-4820
DOI:10.1016/j.jnucmat.2019.05.034