Radiation damage in pure and helium-doped α-Al2O3 in the HVEM Quantitative aspects of void and aluminium precipitate formation

G. P. Pells Aere; T. Shikama

doi:10.1080/01418618308236544

Radiation damage in pure and helium-doped α-Al₂O₃ in the HVEM Quantitative aspects of void and aluminium precipitate formation

G. P. Pells Aere, T. Shikama

金属材料研究所

研究成果: Article › 査読

28 被引用数 (Scopus)

抄録

Single crystal α-Al₂O₃, both pure and helium-doped, has been irradiated with 1 MV electrons in a HVEM at several temperatures in the range 880–1130 K. Voids and aluminium precipitates were found to form after electron doses of ∼ 17 and ∼40 MC m⁻², respectively. The number and size distribution of both voids and aluminium precipitates were determined, and the volume fraction of both kinds of defect were found to follow a power law of dose with an exponent of 0·5–0·6. An activation energy for void formation of 0·96 ± 0·1 eV was obtained, and void swelling was found to be only slightly increased by helium doping. The activation energy for aluminium precipitate formation was found to be 1·35 ± 0·15 eV.

本文言語	English
ページ（範囲）	779-794
ページ数	16
ジャーナル	Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties
巻	48
号	5
DOI	https://doi.org/10.1080/01418618308236544
出版ステータス	Published - 1983 5月

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
材料科学（全般）
凝縮系物理学
物理学および天文学（その他）
金属および合金

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10.1080/01418618308236544

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引用スタイル

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title = "Radiation damage in pure and helium-doped α-Al2O3 in the HVEM Quantitative aspects of void and aluminium precipitate formation",

abstract = "Single crystal α-Al2O3, both pure and helium-doped, has been irradiated with 1 MV electrons in a HVEM at several temperatures in the range 880–1130 K. Voids and aluminium precipitates were found to form after electron doses of ∼ 17 and ∼40 MC m−2, respectively. The number and size distribution of both voids and aluminium precipitates were determined, and the volume fraction of both kinds of defect were found to follow a power law of dose with an exponent of 0·5–0·6. An activation energy for void formation of 0·96 ± 0·1 eV was obtained, and void swelling was found to be only slightly increased by helium doping. The activation energy for aluminium precipitate formation was found to be 1·35 ± 0·15 eV.",

author = "{Pells Aere}, {G. P.} and T. Shikama",

note = "Funding Information: The authors wish to extend thanks to Dr. M. J. Makin and members of his group for help in using the HVEM facilities, and also to Drs. Makin, D. J. Mazey and A. D. Marwick for helpful discussions. This work was partly supported by a contract from the Euratom/UKAEA Fusion Association. Copyright: Copyright 2015 Elsevier B.V., All rights reserved.",

year = "1983",

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doi = "10.1080/01418618308236544",

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T1 - Radiation damage in pure and helium-doped α-Al2O3 in the HVEM Quantitative aspects of void and aluminium precipitate formation

AU - Pells Aere, G. P.

AU - Shikama, T.

N1 - Funding Information: The authors wish to extend thanks to Dr. M. J. Makin and members of his group for help in using the HVEM facilities, and also to Drs. Makin, D. J. Mazey and A. D. Marwick for helpful discussions. This work was partly supported by a contract from the Euratom/UKAEA Fusion Association. Copyright: Copyright 2015 Elsevier B.V., All rights reserved.

PY - 1983/5

Y1 - 1983/5

N2 - Single crystal α-Al2O3, both pure and helium-doped, has been irradiated with 1 MV electrons in a HVEM at several temperatures in the range 880–1130 K. Voids and aluminium precipitates were found to form after electron doses of ∼ 17 and ∼40 MC m−2, respectively. The number and size distribution of both voids and aluminium precipitates were determined, and the volume fraction of both kinds of defect were found to follow a power law of dose with an exponent of 0·5–0·6. An activation energy for void formation of 0·96 ± 0·1 eV was obtained, and void swelling was found to be only slightly increased by helium doping. The activation energy for aluminium precipitate formation was found to be 1·35 ± 0·15 eV.

AB - Single crystal α-Al2O3, both pure and helium-doped, has been irradiated with 1 MV electrons in a HVEM at several temperatures in the range 880–1130 K. Voids and aluminium precipitates were found to form after electron doses of ∼ 17 and ∼40 MC m−2, respectively. The number and size distribution of both voids and aluminium precipitates were determined, and the volume fraction of both kinds of defect were found to follow a power law of dose with an exponent of 0·5–0·6. An activation energy for void formation of 0·96 ± 0·1 eV was obtained, and void swelling was found to be only slightly increased by helium doping. The activation energy for aluminium precipitate formation was found to be 1·35 ± 0·15 eV.

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