巻号一覧
5 巻 (1958)
- 3 号 p. 147-
- 2 号 p. 80-
- 1 号 p. 1-
5 巻, 2 号
選択された号の論文の7件中1～7を表示しています
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武井 武, 杉本 光男, 関口 貞彦1958 年 5 巻 2 号 p. 80-84
発行日: 1958/10/20
公開日: 2009/05/22
ジャーナル フリーMost of the soft ferromagnetic ferrites are manufactured by sintering the prefired powder of mixed oxides. As the particle size of the powder have a marked influence on the properties of the sintered ferrite, the authors measured the size and its distribution of the powder and found the relation between the particle size and ball milling time of the prefired ferrite as shown in Fig. 1
Density of the sintered ferrite was also measured and it was found that it increases noticeably as the ball milling time of the prefired ferrite increases in the case of low temperature sintering. Whereas, the change of the density is small and not regular-in some case it decreases-in the case of high temperature sintering as shown in Fig. 2 and Fig. 3.
Shrinkage in sintering was also measured. In most cases, it increases a little as the ball milling time increases as shown in Fig. 4. The reasons of these changes were discussed.抄録全体を表示PDF形式でダウンロード (1949K) -
赤羽 清, 八島 舜一1958 年 5 巻 2 号 p. 85-96
発行日: 1958/10/20
公開日: 2009/05/22
ジャーナル フリーDouble cone type mixer was manufactured for the present experiments, and sampling of metal powders was investigated by statistical method.
As the result of experiment it was recognized that metal powders are unified for a few minutes by mechanical mixing, but oxidation of powder and collapse of dendritic powder are inevitable to some extent.
Following to M. P. A. Metal Powder Association Standard, the original bill of JIS (Japanese Industrial Standard) of sampling of metal powders was prepared by Powder Metallurgy Commitee based upon our experimental data抄録全体を表示PDF形式でダウンロード (2208K) -
西島 寅次1958 年 5 巻 2 号 p. 97-106
発行日: 1958/10/20
公開日: 2009/05/22
ジャーナル フリーIn this paper, geometrical and chemical phenomenon in compacting and sintering processes of iron powders were investigated. Used powders were produced by various methods i.e. stamping, eddy milling and hydrogen reducing.
Effect of shape factors of iron powders on such processes were observed through the characteristic feature when taping or compacting. As far as it was not sintered at high temperature, such a packing feature was remaind. But treatments of high pressure pressing, powder mixing between some shape or size, and high temperature sintering made to lose such a feature, especially the treatment of high temperature sintering made to progress the grain growth between each powder. So the geometrical characteristics of pore when produced by compacting were diminished.抄録全体を表示PDF形式でダウンロード (3714K) -
深津 保1958 年 5 巻 2 号 p. 107-114
発行日: 1958/10/20
公開日: 2009/05/22
ジャーナル フリーPDF形式でダウンロード (1756K) -
前田 実1958 年 5 巻 2 号 p. 124-126
発行日: 1958/10/20
公開日: 2009/05/22
ジャーナル フリーPDF形式でダウンロード (227K) -
石川 正1958 年 5 巻 2 号 p. 127-129
発行日: 1958/10/20
公開日: 2009/05/22
ジャーナル フリーPDF形式でダウンロード (309K) -
吉田 四郎1958 年 5 巻 2 号 p. 130-136
発行日: 1958/10/20
公開日: 2009/05/22
ジャーナル フリーPDF形式でダウンロード (460K)
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