Effect of proton irradiation on the defect evolution of Zr/Nb nanoscale multilayers

Abstract

Nanoscale multilayer coatings (NMCs) with different crystal structures are considered as capable of self-healing after radiation damage due to the recombination of vacancies and interstitials. This work is focused on a defect distribution study of NMCs based on Zr/Nb layers (25/25 nm and 100/100 nm) after proton irradiation. Coatings with a total thickness of 1.05 ± 0.05 µm were irradiated by 900-keV protons using a pelletron-type electrostatic accelerator with an ion current of 2 µA for durations of 60 min to 120 min. The influence of the irradiation effect was studied by X-ray diffraction analysis (XRD), glow discharge optical emission spectrometry (GD–OES), and Doppler broadening spectroscopy using a variable energy positron beam. The results obtained by these methods are compatible and indicate that defect concentration of Zr/Nb NMCs remains unchanged or slightly decreases with increasing irradiation time.

Original language	English
Article number	535
Journal	Metals
Volume	10
Issue number	4
DOIs	https://doi.org/10.3390/met10040535
Publication status	Published - Apr 2020

Keywords

Defects
GD-OES
Microstructure
Nanoscale multilayer coating
Positron annihilation spectroscopy
Proton irradiation
XRD
Zr/Nb

ASJC Scopus subject areas

Materials Science(all)

Access to Document

10.3390/met10040535

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title = "Effect of proton irradiation on the defect evolution of Zr/Nb nanoscale multilayers",

abstract = "Nanoscale multilayer coatings (NMCs) with different crystal structures are considered as capable of self-healing after radiation damage due to the recombination of vacancies and interstitials. This work is focused on a defect distribution study of NMCs based on Zr/Nb layers (25/25 nm and 100/100 nm) after proton irradiation. Coatings with a total thickness of 1.05 ± 0.05 µm were irradiated by 900-keV protons using a pelletron-type electrostatic accelerator with an ion current of 2 µA for durations of 60 min to 120 min. The influence of the irradiation effect was studied by X-ray diffraction analysis (XRD), glow discharge optical emission spectrometry (GD–OES), and Doppler broadening spectroscopy using a variable energy positron beam. The results obtained by these methods are compatible and indicate that defect concentration of Zr/Nb NMCs remains unchanged or slightly decreases with increasing irradiation time.",

keywords = "Defects, GD-OES, Microstructure, Nanoscale multilayer coating, Positron annihilation spectroscopy, Proton irradiation, XRD, Zr/Nb",

author = "Roman Laptev and Anton Lomygin and Dmitriy Krotkevich and Maxim Syrtanov and Egor Kashkarov and Yuriy Bordulev and Krzysztof Siemek and Andrey Kobets",

year = "2020",

month = apr,

doi = "10.3390/met10040535",

language = "English",

volume = "10",

journal = "Metals",

issn = "2075-4701",

publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",

number = "4",

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TY - JOUR

T1 - Effect of proton irradiation on the defect evolution of Zr/Nb nanoscale multilayers

AU - Laptev, Roman

AU - Lomygin, Anton

AU - Krotkevich, Dmitriy

AU - Syrtanov, Maxim

AU - Kashkarov, Egor

AU - Bordulev, Yuriy

AU - Siemek, Krzysztof

AU - Kobets, Andrey

PY - 2020/4

Y1 - 2020/4

N2 - Nanoscale multilayer coatings (NMCs) with different crystal structures are considered as capable of self-healing after radiation damage due to the recombination of vacancies and interstitials. This work is focused on a defect distribution study of NMCs based on Zr/Nb layers (25/25 nm and 100/100 nm) after proton irradiation. Coatings with a total thickness of 1.05 ± 0.05 µm were irradiated by 900-keV protons using a pelletron-type electrostatic accelerator with an ion current of 2 µA for durations of 60 min to 120 min. The influence of the irradiation effect was studied by X-ray diffraction analysis (XRD), glow discharge optical emission spectrometry (GD–OES), and Doppler broadening spectroscopy using a variable energy positron beam. The results obtained by these methods are compatible and indicate that defect concentration of Zr/Nb NMCs remains unchanged or slightly decreases with increasing irradiation time.

AB - Nanoscale multilayer coatings (NMCs) with different crystal structures are considered as capable of self-healing after radiation damage due to the recombination of vacancies and interstitials. This work is focused on a defect distribution study of NMCs based on Zr/Nb layers (25/25 nm and 100/100 nm) after proton irradiation. Coatings with a total thickness of 1.05 ± 0.05 µm were irradiated by 900-keV protons using a pelletron-type electrostatic accelerator with an ion current of 2 µA for durations of 60 min to 120 min. The influence of the irradiation effect was studied by X-ray diffraction analysis (XRD), glow discharge optical emission spectrometry (GD–OES), and Doppler broadening spectroscopy using a variable energy positron beam. The results obtained by these methods are compatible and indicate that defect concentration of Zr/Nb NMCs remains unchanged or slightly decreases with increasing irradiation time.

KW - Defects

KW - GD-OES

KW - Microstructure

KW - Nanoscale multilayer coating

KW - Positron annihilation spectroscopy

KW - Proton irradiation

KW - XRD

KW - Zr/Nb

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DO - 10.3390/met10040535

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JF - Metals

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