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Dislocation loops and their depth profiles in He[sup +] and D[sup +] ion irradiated nickel

Abstract

Effects of implanted deuterium and helium on the formation of dislocation loops in Ni have been systematically investigated in terms of the irradiation temperature and dose by means of transmission electron microscopy. Significant enhancement of loop formation is observed only for He[sup +] irradiation. The number density of loops at 200 C for He[sup +] irradiation is about one order of magnitude higher than that of D[sup +] irradiation and the difference increases at higher temperatures. Significant decrease in the density occurs at about 300 C for D[sup +] irradiation, but it appears at about 600 C for He[sup +] irradiation. Below 200 C, continuous nucleation of loops is observed only for He[sup +] irradiation. The change in the loop depth distribution suggests that the nucleation of loops for He[sup +] irradiation is enhanced by some defects with a low mobility such as small He-vacancy complexes. The significant decrease in the loop density above 600 C is explained by the decrease in the concentration of the small He-vacancy complexes due to their absorption by large cavities or their escape to the specimen surface. (orig.)
Authors:
Niwase, K; [1]  Ezawa, T; [2]  Tanabe, T; [3]  Kiritani, M; [4]  Fujita, F E [2] 
  1. Dept. of Physics, Hyogo Univ. of Teacher Education, Yashiro (Japan)
  2. Dept. of Material Physics, Faculty of Engineering Science, Osaka Univ., Toyonaka (Japan)
  3. Dept. of Nuclear Engineering, Faculty of Engineering, Osaka Univ., Suita (Japan)
  4. Dept. of Nuclear Engineering, School of Engineering, Nagoya Univ. (Japan)
Publication Date:
Jul 01, 1993
Product Type:
Journal Article
Reference Number:
NLN-93-0FA893; EDB-93-142117
Resource Relation:
Journal Name: Journal of Nuclear Materials (Journal des Materiaux Nucleaires); (Netherlands); Journal Volume: 203:1
Subject:
36 MATERIALS SCIENCE; NICKEL; DISLOCATIONS; PHYSICAL RADIATION EFFECTS; DEUTERIUM IONS; HELIUM IONS; IRRADIATION; KEV RANGE 10-100; MICROSTRUCTURE; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0400-1000 K; TRANSMISSION ELECTRON MICROSCOPY; CHARGED PARTICLES; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; ELECTRON MICROSCOPY; ELEMENTS; ENERGY RANGE; IONS; KEV RANGE; LINE DEFECTS; METALS; MICROSCOPY; RADIATION EFFECTS; TEMPERATURE RANGE; TRANSITION ELEMENTS; 360106* - Metals & Alloys- Radiation Effects
OSTI ID:
6034275
Country of Origin:
Netherlands
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0022-3115; CODEN: JNUMAM
Submitting Site:
NLN
Size:
Pages: 56-66
Announcement Date:

Citation Formats

Niwase, K, Ezawa, T, Tanabe, T, Kiritani, M, and Fujita, F E. Dislocation loops and their depth profiles in He[sup +] and D[sup +] ion irradiated nickel. Netherlands: N. p., 1993. Web. doi:10.1016/0022-3115(93)90430-7.
Niwase, K, Ezawa, T, Tanabe, T, Kiritani, M, & Fujita, F E. Dislocation loops and their depth profiles in He[sup +] and D[sup +] ion irradiated nickel. Netherlands. doi:10.1016/0022-3115(93)90430-7.
Niwase, K, Ezawa, T, Tanabe, T, Kiritani, M, and Fujita, F E. 1993. "Dislocation loops and their depth profiles in He[sup +] and D[sup +] ion irradiated nickel." Netherlands. doi:10.1016/0022-3115(93)90430-7. https://www.osti.gov/servlets/purl/10.1016/0022-3115(93)90430-7.
@misc{etde_6034275,
title = {Dislocation loops and their depth profiles in He[sup +] and D[sup +] ion irradiated nickel}
author = {Niwase, K, Ezawa, T, Tanabe, T, Kiritani, M, and Fujita, F E}
abstractNote = {Effects of implanted deuterium and helium on the formation of dislocation loops in Ni have been systematically investigated in terms of the irradiation temperature and dose by means of transmission electron microscopy. Significant enhancement of loop formation is observed only for He[sup +] irradiation. The number density of loops at 200 C for He[sup +] irradiation is about one order of magnitude higher than that of D[sup +] irradiation and the difference increases at higher temperatures. Significant decrease in the density occurs at about 300 C for D[sup +] irradiation, but it appears at about 600 C for He[sup +] irradiation. Below 200 C, continuous nucleation of loops is observed only for He[sup +] irradiation. The change in the loop depth distribution suggests that the nucleation of loops for He[sup +] irradiation is enhanced by some defects with a low mobility such as small He-vacancy complexes. The significant decrease in the loop density above 600 C is explained by the decrease in the concentration of the small He-vacancy complexes due to their absorption by large cavities or their escape to the specimen surface. (orig.)}
doi = {10.1016/0022-3115(93)90430-7}
journal = {Journal of Nuclear Materials (Journal des Materiaux Nucleaires); (Netherlands)}
volume = {203:1}
journal type = {AC}
place = {Netherlands}
year = {1993}
month = {Jul}
}