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Fabrication of micro-scale fracture specimens for nuclear applications by direct laser writing

Fabrication of micro-scale fracture specimens for nuclear applications by direct laser writing
Fabrication of micro-scale fracture specimens for nuclear applications by direct laser writing
The structural integrity of nuclear fission and fusion power plant components is the focus of this research. The state of the art is using micro scale specimens milled with a focussed ion beam (FIB). Because of their very low volume such specimens can be lab tested, even when irradiated to low or medium level of activity. This offers a possibility of testing multiple specimens to investigate stochastic effects, e.g. effects of irradiation on the shift of the ductile to brittle transition. However, FIB milled specimens suffer from Ga contamination, to the degree that the validity of fracture data obtained on such specimens is questionable. We propose to use nano-additive manufacturing as an alternative to FIB for making micro scale fracture specimens. A combination of two-photon polymerization and electrodeposition and sputtering was used to manufacture micro-scale Brazilian disk fracture specimens (CBD), which are free from Ga and thus better suited for the study of irradiation effects on structural integrity. In this study Ni CBD specimens were made with 30 µm diameter and up to 13 µm thickness. The slot width varied between 1 µm to 2.9 µm width the corresponding slot length of between 7.5 µm and 8 µm. Consecutive FIB characterization shows that the specimens have polycrystalline microstructure with sub-µm grains. The work is ongoing making W CBD specimens and on reducing the slot width and using chemical vapor deposition fabrication.
1771-1775
Taverne, Mike P.C.
6444e2cd-5d52-43a7-83b6-2e72f922501d
Zeng, Xu
43fe87ce-ab09-47e0-95a4-00286865942f
Morgan, Katrina
2b9605fc-ac61-4ae7-b5f1-b6e3d257701d
Zeimpekis, Ioannis
a2c354ec-3891-497c-adac-89b3a5d96af0
Huang, Chung-Che
825f7447-6d02-48f6-b95a-fa33da71f106
Ho, Ying-Lung Daniel
945e3431-b334-4d98-858f-c3fae452640f
Mostafavi, Mahmoud
2053c2a4-5010-4656-979b-69df5f985d1b
Shterenlikht, Anton
41f7210a-1abc-4c0d-8de0-274509864690
Taverne, Mike P.C.
6444e2cd-5d52-43a7-83b6-2e72f922501d
Zeng, Xu
43fe87ce-ab09-47e0-95a4-00286865942f
Morgan, Katrina
2b9605fc-ac61-4ae7-b5f1-b6e3d257701d
Zeimpekis, Ioannis
a2c354ec-3891-497c-adac-89b3a5d96af0
Huang, Chung-Che
825f7447-6d02-48f6-b95a-fa33da71f106
Ho, Ying-Lung Daniel
945e3431-b334-4d98-858f-c3fae452640f
Mostafavi, Mahmoud
2053c2a4-5010-4656-979b-69df5f985d1b
Shterenlikht, Anton
41f7210a-1abc-4c0d-8de0-274509864690

Taverne, Mike P.C., Zeng, Xu, Morgan, Katrina, Zeimpekis, Ioannis, Huang, Chung-Che, Ho, Ying-Lung Daniel, Mostafavi, Mahmoud and Shterenlikht, Anton (2018) Fabrication of micro-scale fracture specimens for nuclear applications by direct laser writing. MRS Advances, 3 (31), 1771-1775. (doi:10.1557/adv.2018.236).

Record type: Article

Abstract

The structural integrity of nuclear fission and fusion power plant components is the focus of this research. The state of the art is using micro scale specimens milled with a focussed ion beam (FIB). Because of their very low volume such specimens can be lab tested, even when irradiated to low or medium level of activity. This offers a possibility of testing multiple specimens to investigate stochastic effects, e.g. effects of irradiation on the shift of the ductile to brittle transition. However, FIB milled specimens suffer from Ga contamination, to the degree that the validity of fracture data obtained on such specimens is questionable. We propose to use nano-additive manufacturing as an alternative to FIB for making micro scale fracture specimens. A combination of two-photon polymerization and electrodeposition and sputtering was used to manufacture micro-scale Brazilian disk fracture specimens (CBD), which are free from Ga and thus better suited for the study of irradiation effects on structural integrity. In this study Ni CBD specimens were made with 30 µm diameter and up to 13 µm thickness. The slot width varied between 1 µm to 2.9 µm width the corresponding slot length of between 7.5 µm and 8 µm. Consecutive FIB characterization shows that the specimens have polycrystalline microstructure with sub-µm grains. The work is ongoing making W CBD specimens and on reducing the slot width and using chemical vapor deposition fabrication.

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MRS_manuscript_11_FEB_2018 - Accepted Manuscript
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Accepted/In Press date: 26 February 2018
e-pub ahead of print date: 26 February 2018

Identifiers

Local EPrints ID: 418570
URI: http://eprints.soton.ac.uk/id/eprint/418570
PURE UUID: b5ad84f4-9517-4a2f-b6f2-b72ef668cbc3
ORCID for Katrina Morgan: ORCID iD orcid.org/0000-0002-8600-4322
ORCID for Chung-Che Huang: ORCID iD orcid.org/0000-0003-3471-2463

Catalogue record

Date deposited: 12 Mar 2018 17:30
Last modified: 09 Jan 2022 07:12

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Contributors

Author: Mike P.C. Taverne
Author: Xu Zeng
Author: Katrina Morgan ORCID iD
Author: Chung-Che Huang ORCID iD
Author: Ying-Lung Daniel Ho
Author: Mahmoud Mostafavi
Author: Anton Shterenlikht

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