巻号一覧
1972 巻 (1972)
- 71 号 p. 108-
- 70 号 p. 71-
- 69 号 p. 36-
- 68 号 p. 2-
1972 巻, 69 号
選択された号の論文の5件中1～5を表示しています
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稲田 聡, 野口 和男1972 年 1972 巻 69 号 p. 36-40
発行日: 1972/05/15
公開日: 2010/06/28
ジャーナル フリーThe Carbon Foam reported on this paper is prepared in a specific way by utilizing “Krecasphere”* a hollow carbon microsphere.
“Krecasphere” is first fabricated to green foam with organic binders such as phenolic resin. Then green foam is carbonized at 1000°C in inert atomosphere.
Krecasphere Carbon Foam thus produced is quite characteristic compared with various carbon foams and porous carbons produced commercially so far.
Its density and pore size are controllable at a desired value, pore size distribution is sharp, high mechanical strength to density ratio is attainable, it consists of closed pores as well as open pores leading to its good thermal insulating properties, and moreover, “Foam” of a large dimention can be obtained without much difficulty.
Accordingly, Krecasphere Carbon Foam may be applied in many fields including such fields that ordinally carbon foams have not been applicables: thermal insulation at high temperature (nuclear reactor, rocket, vacuum furnace etc.), carbon brick, filters for gases and liquids, oil separator, and the like.抄録全体を表示PDF形式でダウンロード (1663K) -
矢島 聖使, 平井 敏雄, 早瀬 登久治1972 年 1972 巻 69 号 p. 41-47
発行日: 1972/05/15
公開日: 2010/06/28
ジャーナル フリーThe micro Vickers hardness of pyrolytic graphite (PG) and siliconated pyrolytic graphite [PG (Si)] prepared by pyrolysis of a mixture of commercial propane gas and silicon tetrachloride vapor under various conditions has been measured. The hardness is almost independent of the angle from the deposition plane and increases with decreasing deposition temperature. PG is harder than PG (Si) prepared at the same deposition temperature. This difference results from the difference in their structural features (density, interlayer spacing, crystallite size and preferred orientation factor). Relations between the hardness and the structural features show different behaviors above and below the temperature at which a minimum density is obtained. From the experimental results, it is considered that the hardness of PG is affected by cross-links among crystallites, while the hardness of PG (Si) is related to the presence of SiC in PG matrix.抄録全体を表示PDF形式でダウンロード (946K) -
岩田 忠夫, 仁平 猛1972 年 1972 巻 69 号 p. 48-56
発行日: 1972/05/15
公開日: 2010/06/28
ジャーナル フリーPDF形式でダウンロード (1256K) -
石尾 右哉1972 年 1972 巻 69 号 p. 57-63
発行日: 1972/05/15
公開日: 2010/06/28
ジャーナル フリーPDF形式でダウンロード (1053K) -
都竹 卓郎1972 年 1972 巻 69 号 p. 64-65
発行日: 1972/05/15
公開日: 2010/06/28
ジャーナル フリーPDF形式でダウンロード (6593K)
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