Heavy ion irradiation damage in Zr2AlC MAX phase

Konstantza Lambrinou; H.H. Al-Qarra; Kevin Knowles; Mary E. Vickers; Shavkat Zh. Akhmadaliev

doi:10.1016/j.jnucmat.2019.05.034

Heavy ion irradiation damage in Zr2AlC MAX phase

Konstantza Lambrinou, H.H. Al-Qarra, Kevin Knowles, Mary E. Vickers, Shavkat Zh. Akhmadaliev

Research output › peer-review

Abstract

Zr2AlC MAX phase-based ceramic material with 33 wt% ZrC has been irradiated with 22 MeV Au7þ 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.

Original language	English
Pages (from-to)	1-9
Number of pages	9
Journal	Journal of Nuclear Materials
Volume	523
Early online date	22 May 2019
DOIs	https://doi.org/10.1016/j.jnucmat.2019.05.034
State	Published - 22 May 2019

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Cite this

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title = "Heavy ion irradiation damage in Zr2AlC MAX phase",

abstract = "Zr2AlC MAX phase-based ceramic material with 33 wt% ZrC has been irradiated with 22 MeV Au7{\th} 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.",

keywords = "MAX phases, ion irradiation",

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AU - Lambrinou, Konstantza

AU - Al-Qarra, H.H.

AU - Knowles, Kevin

AU - Vickers, Mary E.

AU - Akhmadaliev, Shavkat Zh.

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N2 - Zr2AlC MAX phase-based ceramic material with 33 wt% ZrC has been irradiated with 22 MeV Au7þ 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.

AB - Zr2AlC MAX phase-based ceramic material with 33 wt% ZrC has been irradiated with 22 MeV Au7þ 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.

KW - MAX phases

KW - ion irradiation

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