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Volume 3 (1949 - 1950･･･
- Issue 2 Pages 28-
- Issue 1 Pages 1-
Volume 3, Issue 1
Displaying 1-4 of 4 articles from this issue
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Nobuji Sasaki, Ryuzo Ueda1949 Volume 3 Issue 1 Pages 1-7
Published: August 05, 1949
Released on J-STAGE: May 22, 2009
JOURNAL FREE ACCESSMicroscopic observation revealed that the reduction product of a single piece of WO3 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 WO3 crystals are reduced, secondary particles may loosely cling together to form tertiary particles and so on.View full abstractDownload PDF (485K) -
[in Japanese]1949 Volume 3 Issue 1 Pages 8-11
Published: August 05, 1949
Released on J-STAGE: May 22, 2009
JOURNAL FREE ACCESSDownload PDF (1808K) -
Mainly iron powders crushed by stamp mill and eddy millKazuhiko Ogawa, Toraji Nishijima1949 Volume 3 Issue 1 Pages 12-18
Published: August 05, 1949
Released on J-STAGE: May 22, 2009
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[in Japanese]1949 Volume 3 Issue 1 Pages 19-27
Published: August 05, 1949
Released on J-STAGE: July 12, 2010
JOURNAL FREE ACCESSDownload PDF (525K)
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