Field-Ion Microscope Observation of Thermal Faceting in Ni_4Mo Emitter
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概要
- 論文の詳細を見る
Modes of thermal faceting in emitters of Ni_4Mo alloy quenched from the α region (FCC structure) were investigated by field-ion microscopy, using in-situ annealing without an applied field. Faceting with FCC configuration occurred, not only at 1110-1300 K or about 770 K where ordering does not practically occur in bulk, but even at 1100-990 K where nucleation of the β phase (ordered BCT structure) is very active in bulk. At 940-870 K, however, a particular type of faceting occurred at the {751}_<FCC> poles. An interpretation of this faceting was successfully made in terms of crystallography of the ordered structure. Those facets were superlattice {211}_<BCT> facets of the six orientation variants of the β phase. All the variants had equivalently developed. The ordered regions associated with the facets were found to be disc-shaped, a few tens of nanometers in diameter and less than about 2 nm in thickness.
- 社団法人応用物理学会の論文
- 1981-11-05
著者
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Yamamoto Masahiko
Department Of Materials Science And Engineering Faculty Of Engineering Osaka University
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Kingetsu Toshiki
Department Of Materials Science And Engineering Faculty Of Engineering Osaka University
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Kingetsu Toshiki
Advanced Materials Research Laboratories Nisshin Steel Company Ltd.
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NAKAMURA Shogo
Institute of Scientific and Industrial Research, Osaka University
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Nenno Soji
Department Of Materials Science And Engineering Faculty Of Engineering Osaka University
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Yamamoto Masahiko
Department Of Biofunctional Chemistry Graduate School Of Natural Science And Technology Okayama Univ
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