巻号一覧
2002 巻 (2002)
- 205 号 p. 221-
- 204 号 p. 159-
- 203 号 p. 113-
- 202 号 p. 71-
- 201 号 p. 2-
2002 巻, 203 号
選択された号の論文の10件中1～10を表示しています
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Hidetaka Konno, Keiko Fujita, Hiroki Habazaki, Michio Inagaki2002 年 2002 巻 203 号 p. 113-116
発行日: 2002/07/25
公開日: 2010/06/28
ジャーナル フリーGraphite crystals were formed from a mixture of poly (vinyl pyrrolidone) (PVP) or polyacrylamide (PAA) pow-der and magnetite powder at 1150-1200°C. The graphite was identified by X ray diffraction and transmission elec-tron microscopy. The carbon yield from PAA at 1200°C was about four times of that from PVP, but PAA needed pro-longed heat treatment to transform turbostratic carbon to graphite. The graphite formation with magnetite from hard-carbon precursors (PVP and PAA) required higher temperatures and longer treatment time than with magnetite and soft-carbon precursors, such as poly (vinyl chloride) (PVC) and poly (vinyl alcohol) (PVA). Electron microscopic observations suggested that in addition to a carbide mechanism, a dissolution-precipitation mechanism may also take part in the graphitization of carbon derived from PVP and PAA.抄録全体を表示PDF形式でダウンロード (5301K) -
田邊 靖博, 石井 元, 中西 真, 赤津 隆, 安田 榮一2002 年 2002 巻 203 号 p. 117-119
発行日: 2002/07/25
公開日: 2010/06/28
ジャーナル フリーTo measure inter laminar shear strength (ILSS) of C/C composites at high temperatures, a graphite jig was developed on double notched specimen configuration. ILSS of unidirectional C/C composites and 0/90 cross-ply of C/C composites (HTT2000°C and 3000°C in both composites) were measured using the assembly up to 1500°C. In all tests, the shear load showed a liner increase after the initial stage of the loading. The assembly developed was satisfactorily used to measure the ILSS of the C/C composites at high temperatures. All specimens showed catastrophic fracture, and the ILSS largely increased with testing temperature, at least, above 1250°C. In C/C composites, relationships between ILSS and testing temperature seem to depend not on orientation configuration of their reinforcement but on their heat-treatment temperature.抄録全体を表示PDF形式でダウンロード (475K) -
塩山 洋2002 年 2002 巻 203 号 p. 120-122
発行日: 2002/07/25
公開日: 2010/06/28
ジャーナル フリーHalogens were allowed to react with potassium-graphite intercalation compounds (K-GICs). By the reaction with chlorine, K-GICs were decomposed, and hence the increase of stage number was observed. As chlorine is known not to intercalate into graphite, the interaction of potassium with chlorine was taken place on the sample surface. The decomposition by chlorobenzene and benzoyl bromide was observed in a similar way. When ICl or IBr was used as a reagent, intercalation of the reagent was observed. The products of K-GICs and IBr systems suggest a reaction mech-anism of the decomposition of K-GIC and the subsequent intercalation of IBr.抄録全体を表示PDF形式でダウンロード (431K) -
半沢 洋子, 宮嶋 尚哉, 羽鳥 浩章, 山田 能生2002 年 2002 巻 203 号 p. 123-126
発行日: 2002/07/25
公開日: 2010/06/28
ジャーナル フリーActivated carbon fibers (ACFs) were modified using an oxidation reagent and a surface coupling reagent. Liquid phase oxidation reduced pore width and micropore volume due to the introduction of acidic functional groups, while the change in pore width was negligibly small by the addition of long hydrocarbon chains using the coupling reagent. The introduction of acidic functional groups as well as the long hydrocarbon chains lowered the methane adsorption ability of ACFs. However, the change in a parameter of extended DR equation, saturated vapor pressure of the quasi-vaporized supercritical methane, caused by the surface modification was similar to that by MgO dispersion which enhances the methane adsorption ability抄録全体を表示PDF形式でダウンロード (576K) -
関 建司2002 年 2002 巻 203 号 p. 127-135
発行日: 2002/07/25
公開日: 2010/06/28
ジャーナル フリーAdsorptive storage is the most promising low-pressure alternative for natural gas storage. The possibility of an adsorptive natural gas (ANG) storage system was studied for applications such as a gas holder. This application has more merits as a storage system than one of vehicle due to lower pressure storage. This paper examines the cyclic adsorption-desorption behavior of natural gas and odorants, the impact of adsorption and desorption temperature [NOT HEAT] of natural gas on the storage capacity, and the composition of the desorbed gas in a large scale test. Results illustrated that the initial cost and site area of gas supply equipment using adsorbents was lower and smaller than that of compressed natural gas (CNG) storage under the same condition. Furthermore the new storage system equipped with two adsorption beds and back pressure valve was designed to improve the ratio of degradation by accumulation of heavy hydrocarbon. It was demonstrated that this storage system was effective for ANG storage and had 1.3 to 1.6 times greater storage capacity than that of the conventional ANG storage equipped with one bed.抄録全体を表示PDF形式でダウンロード (1422K) -
小久見 善八, 安部 武志, 稲葉 稔, 鄭 淳基2002 年 2002 巻 203 号 p. 136-140
発行日: 2002/07/25
公開日: 2010/06/28
ジャーナル フリーIn lithium ion batteries, graphite and graphitized carbonaceous materials have been mainly used as negative elec-trodes because of their acceptable high capacity, very flat potential as low as Li metal, etc. One of the problems for graphite negative electrode is irreversible capacity due to electrolyte decomposition and subsequent formation of sur-face film (solid electrolyte interphase, SEI) in the initial stage of charge and discharge cycling. And hence much effort has been devoted to the evaluation of formation mechanism of SEI films. Here we described the brief explana-tion of graphite negative electrode for lithium ion batteries and explained the correlation between SEI film formation on graphite electrode and solvated lithium ion intercalation of graphite.抄録全体を表示PDF形式でダウンロード (2368K) -
佐野 秀明, 内山 休男2002 年 2002 巻 203 号 p. 141-149
発行日: 2002/07/25
公開日: 2010/06/28
ジャーナル フリーPDF形式でダウンロード (1585K) -
吉岡 久雄2002 年 2002 巻 203 号 p. 150
発行日: 2002/07/25
公開日: 2010/06/28
ジャーナル フリーPDF形式でダウンロード (220K) -
相澤 淳一2002 年 2002 巻 203 号 p. 151
発行日: 2002/07/25
公開日: 2010/06/28
ジャーナル フリーPDF形式でダウンロード (245K) -
2002 年 2002 巻 203 号 p. 155
発行日: 2002/07/25
公開日: 2010/06/28
ジャーナル フリーPDF形式でダウンロード (140K)
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