Study on the Crystallization Process of Polished Layers of Metals by Electron Diffraction and Microscopy
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概要
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Polished layers, the so-called Beilby layers, of Cu, Ni and Au are heated in vacuum or, for Ni, in hydrogen atmosphere, and the process of crystal growth is studied by electron diffraction and electron microscopy. The crystallization curves at various temperatures are also obtained. Above a certain temperature, for each metal, the crystallization goes on pretty rapidly: for instance, polished surfaces of Cu, Ni and Au crystallize in one hour at 60℃, 250℃ and below 200℃, respectively. The crystallized surfaces consist mostly of Cu_2O and of NiO for Cu and Ni surfaces respectively, and exclusively of metallic Au for Au surface. They are accompanied by weak fibre structures, which are more remarkable by the heating at lower temperatures. When the polished specimen of Ni is heated in hydrogen atmosphere, the number of the nuclei of crystallization is smaller than for specimens heated in vacuum.
- 社団法人日本物理学会の論文
- 1954-08-25
著者
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Kohra Kazutake
Department Of Applied Physics Faculty Of Engineering The University Of Tokyo
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Nonaka Kozo
Government Industrial Research Institute
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Kohra Kazutake
Department Of Physics College Of General Education University Of Tokyo
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