Irradiation effects on multilayered W/ZrO2 film under 4 MeV Au ions

Hongwei Wang; Yuan Gao; Engang Fu; Tengfei Yang; Jianming Xue; Sha Yan; Paul K. Chu; Yugang Wang

doi:10.1016/j.jnucmat.2014.04.049

Irradiation effects on multilayered W/ZrO₂ film under 4 MeV Au ions

Hongwei Wang, Yuan Gao, Engang Fu, Tengfei Yang, Jianming Xue, Sha Yan, Paul K. Chu, Yugang Wang

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

14 Citations (Scopus)

Abstract

Irradiation induced structural changes in multilayered W/ZrO₂ nanocomposites with periodic bilayer thicknesses of (7/14 nm) and (70/140 nm) were investigated following Au⁺ ion irradiation. The samples were irradiated by 4 MeV Au ions with fluences ranging from 6 × 10¹⁴ to 1 × 10¹⁶ ions/cm². The immiscible W/ZrO ₂ interfaces remained unchanged without intermixing of the layers upon the irradiation. No voids were observed in the samples with different periodic layer thicknesses. The XRD and XTEM studies reveal thickness dependent microstructural changes in the samples. W and ZrO₂ grains in the thinner (7/14 nm) bilayer sample exhibit significant resistance to grain growth compared to the thicker (70/140 nm) bilayer sample as well as a W monolayer film. The high fraction of flat interfaces as well as grain boundaries in multilayer films plays a role in suppressing ion irradiation-induced grain growth and void formation. © 2014 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	86-90
Journal	Journal of Nuclear Materials
Volume	455
Issue number	1-3
Online published	May 2014
DOIs	https://doi.org/10.1016/j.jnucmat.2014.04.049
Publication status	Published - Dec 2014

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@article{e978d9b0445a4115a3dbf6633e9e4d64,

title = "Irradiation effects on multilayered W/ZrO2 film under 4 MeV Au ions",

abstract = "Irradiation induced structural changes in multilayered W/ZrO2 nanocomposites with periodic bilayer thicknesses of (7/14 nm) and (70/140 nm) were investigated following Au+ ion irradiation. The samples were irradiated by 4 MeV Au ions with fluences ranging from 6 × 1014 to 1 × 1016 ions/cm2. The immiscible W/ZrO 2 interfaces remained unchanged without intermixing of the layers upon the irradiation. No voids were observed in the samples with different periodic layer thicknesses. The XRD and XTEM studies reveal thickness dependent microstructural changes in the samples. W and ZrO2 grains in the thinner (7/14 nm) bilayer sample exhibit significant resistance to grain growth compared to the thicker (70/140 nm) bilayer sample as well as a W monolayer film. The high fraction of flat interfaces as well as grain boundaries in multilayer films plays a role in suppressing ion irradiation-induced grain growth and void formation. {\textcopyright} 2014 Elsevier B.V. All rights reserved.",

author = "Hongwei Wang and Yuan Gao and Engang Fu and Tengfei Yang and Jianming Xue and Sha Yan and Chu, {Paul K.} and Yugang Wang",

year = "2014",

month = dec,

doi = "10.1016/j.jnucmat.2014.04.049",

language = "English",

volume = "455",

pages = "86--90",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier B.V.",

number = "1-3",

}

TY - JOUR

T1 - Irradiation effects on multilayered W/ZrO2 film under 4 MeV Au ions

AU - Wang, Hongwei

AU - Gao, Yuan

AU - Fu, Engang

AU - Yang, Tengfei

AU - Xue, Jianming

AU - Yan, Sha

AU - Chu, Paul K.

AU - Wang, Yugang

PY - 2014/12

Y1 - 2014/12

N2 - Irradiation induced structural changes in multilayered W/ZrO2 nanocomposites with periodic bilayer thicknesses of (7/14 nm) and (70/140 nm) were investigated following Au+ ion irradiation. The samples were irradiated by 4 MeV Au ions with fluences ranging from 6 × 1014 to 1 × 1016 ions/cm2. The immiscible W/ZrO 2 interfaces remained unchanged without intermixing of the layers upon the irradiation. No voids were observed in the samples with different periodic layer thicknesses. The XRD and XTEM studies reveal thickness dependent microstructural changes in the samples. W and ZrO2 grains in the thinner (7/14 nm) bilayer sample exhibit significant resistance to grain growth compared to the thicker (70/140 nm) bilayer sample as well as a W monolayer film. The high fraction of flat interfaces as well as grain boundaries in multilayer films plays a role in suppressing ion irradiation-induced grain growth and void formation. © 2014 Elsevier B.V. All rights reserved.

AB - Irradiation induced structural changes in multilayered W/ZrO2 nanocomposites with periodic bilayer thicknesses of (7/14 nm) and (70/140 nm) were investigated following Au+ ion irradiation. The samples were irradiated by 4 MeV Au ions with fluences ranging from 6 × 1014 to 1 × 1016 ions/cm2. The immiscible W/ZrO 2 interfaces remained unchanged without intermixing of the layers upon the irradiation. No voids were observed in the samples with different periodic layer thicknesses. The XRD and XTEM studies reveal thickness dependent microstructural changes in the samples. W and ZrO2 grains in the thinner (7/14 nm) bilayer sample exhibit significant resistance to grain growth compared to the thicker (70/140 nm) bilayer sample as well as a W monolayer film. The high fraction of flat interfaces as well as grain boundaries in multilayer films plays a role in suppressing ion irradiation-induced grain growth and void formation. © 2014 Elsevier B.V. All rights reserved.

UR - http://www.scopus.com/inward/record.url?scp=84901415309&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84901415309&origin=recordpage

U2 - 10.1016/j.jnucmat.2014.04.049

DO - 10.1016/j.jnucmat.2014.04.049

M3 - RGC 21 - Publication in refereed journal

SN - 0022-3115

VL - 455

SP - 86

EP - 90

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1-3

ER -