巻号一覧
15 巻, 8 号
選択された号の論文の12件中1～12を表示しています
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仙名 保, 久野 洋1969 年 15 巻 8 号 p. 381-386
発行日: 1969/01/25
公開日: 2009/12/04
ジャーナル フリーThe parameter c, reflecting the frictional and cohesive properties of binary powder mixture was obtained from the bottom pressure measurements. The effects of the particle diameter. ratio and the way of external pressure application upon c were studied.
In. all cases, c of the mixture deviates from the linear. line connecting the value of each component, although the parameter c approached to the linear line for the small diameter ratios. At low external pressure experiments, the deviation was positive. This deviation was, however, reversed when relatively high pressure was applied with preconsolidation.
These findings indicate that the interaction between fine and coarse particles, accordingly the state of aggregates is quite different depending on the applied external pressure. A part of these interactions was considered as due to the coarse-fine aggregates, which was confirmed by the relation of c to the loosely packed density.
Therefore, a care must be always taken in evaluating the flow or compressional properties, i.e., in measuring the frictional or cohesive properties of mixed powders and its effects on the state of aggregates, particularly in regard to the range of applied force.抄録全体を表示PDF形式でダウンロード (3129K) -
新庄 輝也1969 年 15 巻 8 号 p. 387-391
発行日: 1969/01/25
公開日: 2009/05/22
ジャーナル フリーPDF形式でダウンロード (359K) -
1969 年 15 巻 8 号 p. 391
発行日: 1969年
公開日: 2009/05/22
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可知 祐次1969 年 15 巻 8 号 p. 392-399
発行日: 1969/01/25
公開日: 2009/05/22
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小菅 皓二1969 年 15 巻 8 号 p. 400-408
発行日: 1969/01/25
公開日: 2009/05/22
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新宮 秀夫1969 年 15 巻 8 号 p. 409-413
発行日: 1969/01/25
公開日: 2009/05/22
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坂東 尚周1969 年 15 巻 8 号 p. 414-419
発行日: 1969/01/25
公開日: 2009/05/22
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安息香酸結晶粉末の加圧焼結矢代 隆将, 久野 洋1969 年 15 巻 8 号 p. 420-426
発行日: 1969/01/25
公開日: 2009/05/22
ジャーナル フリーIn order to simplify experimental procedures a model study with a low melting-point material (benzoic acid) has been performed to study the mechanism of pressure sintering.
Theoretical equations for the pressure sintering were derived assuming the viscous flow mechanism with the applied pressure as the only driving force for the densification. This viscous flow mechanism was found to be applicable to the pressure sintering of benzoic acid crystal powder assuming Newtonian solid for the high temperature range and Bingham solid for the low temperature range.
The boundary temperature of these two temperature ranges falls with.the increase of the applied pressure and was found to coincide with the melting-point when the applied pressure becomes zero.
Activation energy of the flow in Newtonian range and the final attainable porosity in Bingham range were calculated.
It was found that this kind of model experiniefit is quite effective in the research of pressure sintering mechanism.抄録全体を表示PDF形式でダウンロード (426K) -
大石 行理1969 年 15 巻 8 号 p. 427-431
発行日: 1969/01/25
公開日: 2009/05/22
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早川 茂1969 年 15 巻 8 号 p. 432-439
発行日: 1969/01/25
公開日: 2009/05/22
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中平 光興1969 年 15 巻 8 号 p. 440-444
発行日: 1969/01/25
公開日: 2009/05/22
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佐原 征四郎, 山口 喬1969 年 15 巻 8 号 p. 445-448
発行日: 1969/01/25
公開日: 2009/12/04
ジャーナル フリーBased on the dissociation characteristics determined volumetrically, copper ferrite powder samples having various oxygen deficiencies were subjected to different heat-treatments under the non-oxidizing condition. It is shown that in addition to the heat-treatment, oxygen deficiency must be taken into consideration for understanding the crystal distortion in copper ferrite. Dependence of crystal distortion on the oxygen deficiency could be interpreted as due to the reduced population of Cu++ in the octahedral site in spinel lattice, caused by the separation of CuO from the host phase and by the formation of Cu+.抄録全体を表示PDF形式でダウンロード (254K)
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