TY - GEN
T1 - Stoichiometric constraint for dislocation loop growth in silicon carbide
AU - Kondo, Sosuke
AU - Katoh, Yutai
AU - Kohyama, Akira
PY - 2008
Y1 - 2008
N2 - A stoichiometric constraint effects on Frank loop growth in β-SiC during irradiation were studied by ion beam irradiation, transmission electron microscopy, and calculation based on a kinetic model. Tilted-ion beam (5.1 MeV Si2+) was irradiated at 1000°C to induce lattice damage and to implant additional Si interstitial atoms simultaneously. Growth rate of the loops observed within the damaged region appeared to be positively correlated with the deposition rate of Si ions. Analysis based on a kinetic model showed that a small amount of deposited excess Si substantially increased the net flux of Si interstitials, which believed to govern the loop growth rate. The experimental and computational results confirm the stoichiometric constraint effect on Frank loop growth in SiC, and that availability of Si interstitial atoms determines the Frank loop growth rate in most irradiation conditions.
AB - A stoichiometric constraint effects on Frank loop growth in β-SiC during irradiation were studied by ion beam irradiation, transmission electron microscopy, and calculation based on a kinetic model. Tilted-ion beam (5.1 MeV Si2+) was irradiated at 1000°C to induce lattice damage and to implant additional Si interstitial atoms simultaneously. Growth rate of the loops observed within the damaged region appeared to be positively correlated with the deposition rate of Si ions. Analysis based on a kinetic model showed that a small amount of deposited excess Si substantially increased the net flux of Si interstitials, which believed to govern the loop growth rate. The experimental and computational results confirm the stoichiometric constraint effect on Frank loop growth in SiC, and that availability of Si interstitial atoms determines the Frank loop growth rate in most irradiation conditions.
UR - http://www.scopus.com/inward/record.url?scp=57649158849&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:57649158849
SN - 9780470196335
T3 - Ceramic Engineering and Science Proceedings
SP - 91
EP - 99
BT - Mechanical Properties and Performance of Engineering Ceramics and Composites III - A Collection of Papers Presented at the 31st International Conference on Advanced Ceramics and Composites
T2 - 31st International Conference on Advanced Ceramics and Composites
Y2 - 21 January 2007 through 26 January 2007
ER -