Replica Study on the Surface Structure of Zn Powder. (On the Reactivity of Zn Powder. 4th Report)

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  • レプリカによるZn末の粒子構造の研究
  • レプリカ ニ ヨル Znマツ ノ リュウシ コウゾウ ノ ケンキュウ

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This paper presents the results of studying the surface structure of Zn particles by optical and electron microscopes, using replica technique. Particles of distilled Zn powder (D-Zn) prepared in vacuum by rapidly distilling onto a cold surface except J-2, are nearly spheres consisting of layers, the extremities of which are made visible under high magnification as sprouts or wrinkles. The thickness of each layer and the interstice between two adjacent layers seems to be less than 100 Å. But J-2 is rather like electrolytic Zn powder (E-Zn). E-Zn grows to into dendrites with 60° branching angles. The interstice between the layers is large enough to let a polystyrene solution easily penetrate into it. The dendrites consists of thin layers (0001 plane) whose hexagonal terminations form a terrace.

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