Structural integrity and charaterisation at lattice and nanometre levels of ZrN polycrystalline irradiated by 4 MeV Au ions.pdf (1.6 MB)

Structural integrity and characteristics at lattice and nanometre levels of ZrN polycrystalline irradiated by 4 MeV Au ions

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journal contribution
posted on 09.07.2018, 14:15 by Weichao Bao, Stuart Robertson, Ji-Xuan Liu, Guo-Jun Zhang, Fangfang Xu, Houzheng Wu
We report an as-hot-pressed zirconium nitride polycrystalline with its primary crystal structure maintained no change but lattice defects and features were introduced at nanometre-scale after being irradiated by 4 MeV Au 2+ with a total fluence of 5 × 10 16 /cm 2 . The variation of grey-level seen in backscattered electron images and electron backscattered diffraction maps directly evidenced the structure integrity of the polycrystalline ZrN is well maintained with no crystal structure change of ZrN. The irradiation depth had no relevance to crystal orientation, and Au deposition peaked at a depth of ∼0.58 μm with a near-Gaussian distribution. Within a depth < 0.58 μm, long dislocation lines were developed with a Burgers vector of [01¯] b /2 and density 3.2 × 10 14 1/m 2 ; beyond this depth, dislocation loops were formed with much higher density. In the ionization zone, cubic ZrO 2 crystallites precipitated in a size of ∼5 nm. The irradiation damage processes are discussed based on the observed features.

Funding

The present work was financially supported by the National Natural Science Foundation of China (51532009, 51502322, 11575275), Science and Technology Commission of Shanghai Municipality (16DZ2260603), Shanghai Technical Platform for Testing and Characterization on Inorganic Materials (14DZ2292900), and Loughborough University’s PhD studentship provided to SR. The authors acknowledge use of facilities within the Loughborough Materials Characterisation Centre.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Materials

Published in

Journal of the European Ceramic Society

Citation

BAO, W. ... et al, 2018. Structural integrity and characteristics at lattice and nanometre levels of ZrN polycrystalline irradiated by 4 MeV Au ions. Journal of the European Ceramic Society, 38 (13), pp.4373-4383.

Publisher

© Elsevier

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

12/05/2018

Publication date

2018

Notes

This paper was accepted for publication in the journal Journal of the European Ceramic Society and the definitive published version is available at https://doi.org/10.1016/j.jeurceramsoc.2018.05.013

ISSN

0955-2219

Language

en

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