Microstructure, defect structure and hydrogen trapping in zirconium alloy Zr-1Nb treated by plasma immersion Ti ion implantation and deposition

Egor Kashkarov, Nikolay Nikitenkov, Alina Sutygina, Roman Laptev, Yuriy Bordulev, Aleksei Obrosov, Maciej O. Liedke, Andreas Wagner, Andrzej Zak, Sabine Weiβ

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The effect of low energy plasma immersion ion implantation and deposition of titanium on microstructure, defect structure and hydrogen trapping in zirconium alloy Zr-1Nb was studied. Defect structure and distribution were analyzed by Doppler broadening using slow positron beam. The surface microstructure after modification is represented by nanostructured Ti grains with random orientation. The gradient distribution of titanium as well as vacancy type defects were analyzed. The concentration of vacancy type defects is rising with increasing bias voltage. Gas-phase hydrogenation of the Ti-modified Zr-1Nb alloy was performed at 400 °C for 60 min. The strong interaction of hydrogen with vacancy type defects was demonstrated. Two different changes in the defect structure after hydrogenation were observed: when a titanium film is formed on the surface (after deposition at 500 V) hydrogen trapping occurs with the formation of titanium hydride phases, while in the implanted layer (deposition at 1000 and 1500 V) hydrogen is trapped due to interaction with vacancy type defects. The physical basis of Ti diffusion and its influence on the evolution of defect structure after surface modification and hydrogenation were discussed.

Original languageEnglish
Pages (from-to)80-87
Number of pages8
JournalJournal of Alloys and Compounds
Volume732
DOIs
Publication statusPublished - 25 Jan 2018

Fingerprint

Zirconium alloys
Defect structures
Titanium
Ion implantation
Vacancies
Hydrogen
Hydrogenation
Plasmas
Defects
Microstructure
Doppler effect
Positrons
Bias voltage
Hydrides
Surface treatment
Gases

Keywords

  • Defects
  • Diffusion
  • Doppler broadening
  • Hydrogen trapping
  • Ion implantation
  • Microstructure
  • Slow positrons
  • Surface modification
  • Titanium
  • Zirconium

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Microstructure, defect structure and hydrogen trapping in zirconium alloy Zr-1Nb treated by plasma immersion Ti ion implantation and deposition. / Kashkarov, Egor; Nikitenkov, Nikolay; Sutygina, Alina; Laptev, Roman; Bordulev, Yuriy; Obrosov, Aleksei; Liedke, Maciej O.; Wagner, Andreas; Zak, Andrzej; Weiβ, Sabine.

In: Journal of Alloys and Compounds, Vol. 732, 25.01.2018, p. 80-87.

Research output: Contribution to journalArticle

@article{5716be515d42425490e2bc9be618840d,
title = "Microstructure, defect structure and hydrogen trapping in zirconium alloy Zr-1Nb treated by plasma immersion Ti ion implantation and deposition",
abstract = "The effect of low energy plasma immersion ion implantation and deposition of titanium on microstructure, defect structure and hydrogen trapping in zirconium alloy Zr-1Nb was studied. Defect structure and distribution were analyzed by Doppler broadening using slow positron beam. The surface microstructure after modification is represented by nanostructured Ti grains with random orientation. The gradient distribution of titanium as well as vacancy type defects were analyzed. The concentration of vacancy type defects is rising with increasing bias voltage. Gas-phase hydrogenation of the Ti-modified Zr-1Nb alloy was performed at 400 °C for 60 min. The strong interaction of hydrogen with vacancy type defects was demonstrated. Two different changes in the defect structure after hydrogenation were observed: when a titanium film is formed on the surface (after deposition at 500 V) hydrogen trapping occurs with the formation of titanium hydride phases, while in the implanted layer (deposition at 1000 and 1500 V) hydrogen is trapped due to interaction with vacancy type defects. The physical basis of Ti diffusion and its influence on the evolution of defect structure after surface modification and hydrogenation were discussed.",
keywords = "Defects, Diffusion, Doppler broadening, Hydrogen trapping, Ion implantation, Microstructure, Slow positrons, Surface modification, Titanium, Zirconium",
author = "Egor Kashkarov and Nikolay Nikitenkov and Alina Sutygina and Roman Laptev and Yuriy Bordulev and Aleksei Obrosov and Liedke, {Maciej O.} and Andreas Wagner and Andrzej Zak and Sabine Weiβ",
year = "2018",
month = "1",
day = "25",
doi = "10.1016/j.jallcom.2017.10.151",
language = "English",
volume = "732",
pages = "80--87",
journal = "Journal of Alloys and Compounds",
issn = "0925-8388",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - Microstructure, defect structure and hydrogen trapping in zirconium alloy Zr-1Nb treated by plasma immersion Ti ion implantation and deposition

AU - Kashkarov, Egor

AU - Nikitenkov, Nikolay

AU - Sutygina, Alina

AU - Laptev, Roman

AU - Bordulev, Yuriy

AU - Obrosov, Aleksei

AU - Liedke, Maciej O.

AU - Wagner, Andreas

AU - Zak, Andrzej

AU - Weiβ, Sabine

PY - 2018/1/25

Y1 - 2018/1/25

N2 - The effect of low energy plasma immersion ion implantation and deposition of titanium on microstructure, defect structure and hydrogen trapping in zirconium alloy Zr-1Nb was studied. Defect structure and distribution were analyzed by Doppler broadening using slow positron beam. The surface microstructure after modification is represented by nanostructured Ti grains with random orientation. The gradient distribution of titanium as well as vacancy type defects were analyzed. The concentration of vacancy type defects is rising with increasing bias voltage. Gas-phase hydrogenation of the Ti-modified Zr-1Nb alloy was performed at 400 °C for 60 min. The strong interaction of hydrogen with vacancy type defects was demonstrated. Two different changes in the defect structure after hydrogenation were observed: when a titanium film is formed on the surface (after deposition at 500 V) hydrogen trapping occurs with the formation of titanium hydride phases, while in the implanted layer (deposition at 1000 and 1500 V) hydrogen is trapped due to interaction with vacancy type defects. The physical basis of Ti diffusion and its influence on the evolution of defect structure after surface modification and hydrogenation were discussed.

AB - The effect of low energy plasma immersion ion implantation and deposition of titanium on microstructure, defect structure and hydrogen trapping in zirconium alloy Zr-1Nb was studied. Defect structure and distribution were analyzed by Doppler broadening using slow positron beam. The surface microstructure after modification is represented by nanostructured Ti grains with random orientation. The gradient distribution of titanium as well as vacancy type defects were analyzed. The concentration of vacancy type defects is rising with increasing bias voltage. Gas-phase hydrogenation of the Ti-modified Zr-1Nb alloy was performed at 400 °C for 60 min. The strong interaction of hydrogen with vacancy type defects was demonstrated. Two different changes in the defect structure after hydrogenation were observed: when a titanium film is formed on the surface (after deposition at 500 V) hydrogen trapping occurs with the formation of titanium hydride phases, while in the implanted layer (deposition at 1000 and 1500 V) hydrogen is trapped due to interaction with vacancy type defects. The physical basis of Ti diffusion and its influence on the evolution of defect structure after surface modification and hydrogenation were discussed.

KW - Defects

KW - Diffusion

KW - Doppler broadening

KW - Hydrogen trapping

KW - Ion implantation

KW - Microstructure

KW - Slow positrons

KW - Surface modification

KW - Titanium

KW - Zirconium

UR - http://www.scopus.com/inward/record.url?scp=85032261729&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85032261729&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2017.10.151

DO - 10.1016/j.jallcom.2017.10.151

M3 - Article

VL - 732

SP - 80

EP - 87

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

ER -