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A {112}Σ3 grain boundary generated from the decomposition of a Σ9 grain boundary in multicrystalline silicon during directional solidification
被引:9
|作者:
Chuang, Lu-Chung
[1
]
Maeda, Kensaku
[1
]
Shiga, Keiji
[1
]
Morito, Haruhiko
[1
]
Fujiwara, Kozo
[1
]
机构:
[1] Tohoku Univ, IMR, Aoba Ku, Katahira 2-1-1, Sendai, Miyagi 9808577, Japan
基金:
日本学术振兴会;
关键词:
Grain boundary;
Multicrystalline Si;
Directional solidification;
MULTI-CRYSTALLINE SILICON;
IN-SITU OBSERVATION;
EVOLUTION;
INTERFACE;
TWIN;
D O I:
10.1016/j.scriptamat.2019.03.037
中图分类号:
TB3 [工程材料学];
学科分类号:
0805 ;
080502 ;
摘要:
The generation of a {112}Sigma 3 grain boundary (GB) was observed in situ from the decomposition of a Sigma 9 GB during directional solidification of multicrystalline Si. A faceted groove formed at the junction of the solid/melt interface and the {112}Sigma 3 GB. This mechanism is different from that for the growth of (111)Sigma 3 GBs, for which no groove formed at the interface. If the growth rates for the adjacent facets of the groove are the same, the GB can grow in a straight manner along the (112) plane. The present results suggest that kinetics can give rise to high-energy GBs during solidification. (C) 2019 Acta Materialia Inc Published by Elsevier Ltd. All rights reserved.
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页码:46 / 50
页数:5
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