ON THE REDUCTION OF TUNGSTEN OXIDE WITH HYDROGEN(I)

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概要

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• Microscopic observation revealed that the reduction product of a single piece of WO<SUB>3</SUB> crystal is consisted of about 0.5μ. particles, or primary particles, which are single crystals of metal formed by the atomic sintering of W atoms produced by the reduction. If the oxide crystal lying flat on a supporting surface is reduced, these primary particles remain scattered on the substratum, marking the exact contour of the original oxide crystal. But, if reduced in a free space, they loosely stick together to form an aggregate, or a secondary particle, which retains the original shape with about 30 per cent contraction. If a mass of WO<SUB>3</SUB> crystals are reduced, secondary particles may loosely cling together to form tertiary particles and so on.

• 社団法人 粉体粉末冶金協会の論文

著者

• 上田 隆三

  京都大學理學部化學教室,無機化學研究室

• 佐々木 申二

  京都大學理學部化學教室,無機化學研究室

関連論文

• ON THE REDUCTION OF TUNGSTEN OXIDE WITH HYDROGEN(I)
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