学会誌「高圧力の科学と技術」
Rev. High Pressure Sci. Technol.

Vol.4  No.2(1995) Abstract


特集-衝撃圧力-
Rev. High Pressure Sci. Technol. 4-2,107-111(1995)
爆発圧着
Explosion Bonding
伊妻 猛志
Takeshi IZUMA
Explosion bonding process introduced commercially in 1960 has developed steadily and expanded its applications. This unique joining process makes use of controlled explosive energy and enables us to bond various kinds of dissimilar metal combinations metallurgically. This paper reviews the development of the process and describes bonding conditions, advantages and limitations of the process, and its applications.

[Explosion bonding, Clad, Transion joint]
〒520-15 滋賀県高島郡新旭町 旭化成工業(株) あいばの工場
Asahi Chemical Industry Co.,LTD. Shin-asahi-machi, Tahashima-gun, Shiga 520-15



特集-衝撃圧力-
Rev. High Pressure Sci. Technol. 4-2,112-117(1995)
ダイヤモンドの衝撃合成
Shock Synthesis of Diamond
関根 利守
Toshimori SEKINE
Shock synthesis of diamond are reviewed. Recovery experiments as well as in situ observations on the conversion to diamond from various carbon sources are summarized. The transition is explained by both diffusional and diffusionless mechanisms depending upon shock conditions and starting materials.

[diamond, shock synthesis, explosive synthesis, carbons]
〒305-0044 茨城県つくば市並木1-1 無機材質研究所
National Institute for Research in Inorganic Materials, Namiki 1-1, Tsukuba 305-0044



特集-衝撃圧力-
Rev. High Pressure Sci. Technol. 4-2,118-127(1995)
Gruneisen型状態方程式と衝撃波
Gruneisen Equation of State and Shock Waves
永山 邦仁
Kunihito NAGAYAMA
Based on the Gruneisen assumption, thermodynamic analysis of the Gruneisen equation of state leads us to the introduction of two new thermal variables, the product of which forms the thermal internal energy. One of them, Θ(v)defines a characteristic temperature of solids as a function of volume, while the other, C(S) is a state variable as a function of entropy, and conjugate to Θ(v). The specific heat is shown to be a function of entropy. These results are also derived by the statistical mechanics of harmonic oscillator systems, but not using the Debye model.

[Gruneisen parameter, Equation of State, High Pressure, Thermal Variable, Statistical Mechanics]
〒812-8581 福岡市東区箱崎6-10-1 九州大学大学院工学研究院航空宇宙工学部門
Kyushu University, Hakozaki, Higashiku, Fukuoka 812-8581



特集-衝撃圧力-
Rev. High Pressure Sci. Technol. 4-2,128-137(1995)
セラミックスの衝撃圧縮挙動の計測
Measurements of Shock Compression Behaviors on Ceramic Materials
真下 茂
Tsutomu MASHIMO
In shock-compression measurement on solids, it is important to use controlled, high-quality specimens and to use high-capability measurement apparatuses. We have been investigating the shock-yielding property, high-pressure phase transition, equation of state, etc. of ceramics, minerals, semiconductors, etc., through shock-wave measurements. In this report, at first, the improved measurement methods combined with the keyed-powder gun used in our studies are described. In the next, the recent studies on selected good quality ceramics(Zro2, Si3N4, AIN, B4C) are reviewed. The typical effects of shock compression on yielding property and phase transition of ceramics are shown, and the yielding mechanism and the correlation with material characterizations are discussed.

[Shock compression, Ceramics, Hugoniot, Yielding, Phase transition, Equation of state, Microstructure]
〒860-8555 熊本市黒髪2-39-1 熊本大学衝撃・極限環境研究センター
Kumamoto University, Kumamoto 860-8555



特集-衝撃圧力-
Rev. High Pressure Sci. Technol. 4-2,138-147(1995)
衝撃焼結プロセスの設計と応用
Design of Shock Compaction Process and Some Applications to New Materials
近藤 建一
Ken-ichi KONDO
Shock compaction methods have various unique features for fabricating new materials, especially consisting of both metastable phase and microstructure. Some phenomenological theories for powder systems under shock loading are reviewed in order to design the shock compaction process, and some examples of the new materials developments are introduced for discussing issues of the process and the applications.

[shock compaction, shock compression, shock chemistry, nanocrystalline materials, powder system, magnetic materials]
〒226-8503 横浜市緑区長津田町4259 東京工業大学応用セラミックス研究所
Research Laboratory of , Tokyo Institute of Technology, 4259 Nagatsuta, Midori, Yokohama 226-8503



解説
Rev. High Pressure Sci. Technol. 4-2,148-156(1995)
豪州褐炭液化(BCL)プロセス高温高圧水添反応による輸送用液体燃料の合成
Brown Coal Liquefaction (BCL) Process:
Synthesis of Liquid Fuel for Transportation by Hydrogenation of Brown Coal
大隈 修
Osamu OOKUMA
Victorian brown coal in Australia has huge reserve(202 GT)and is only used for power generation near its mines. This is because it contains more than 60 wt% moisture and ignites spontaneously after drying. Nippon Brown Coal Liquefaction Co. (NBCL) has developed the BCL(Brown Coal Liquefaction) process which converts the brown coal into high value liquid fuel for transportation such as gasoline under high temperature and high pressure conditions. This process is a two-stage direct liquefaction process and consists of four unit sections: dewatering, primary hydrogenation, solvent de-ashing, and secondary hydrogenation. This paper reviews the direct coal liquefaction technology, and the detail of the BCL process which has been confirmed by operation of the 50 T(dry coal)/D pilot plant constructed in Australia.

[brown coal, coal liquefaction, BCL process, coal oil, dewatering, hydrogenation, de-ashing]
〒651-2271 神戸市西区高塚台 1-5-5 (株)神戸製鋼所技術開発本部 化学環境研究所 化学技術研究室
Laboratory, Kobe Steel, Ltd., Takatsukadai 1-5-5, Nishi-ku, Kobe 651-2271



解説
Rev. High Pressure Sci. Technol. 4-2,157-162(1995)
フッ化メタンの超高圧物性
High-Pressure Properties of Fluorinated Methanes
呉 有紅  清水 宏晏
Wu Youhong, Hiroyasu SHIMIZU
It is known that fluorinated methanes CH3F (HFC-41), CH2F2(HFC-32), CHF3 (HEC-23), CF4 (FC-14) and CHF2Cl (HCFC-22) have considerably more importance to mankind, which have been suggested as the potential replacements for chlorofluorocarbons (CFCs). This article reviews recent high-pressure Raman studies of CH3F, CH2F2, CHF3, CF4 and CHF2Cl, and high-pressure FT-IR study of CH2F2. The pressure-induced phase transitions, the pressure dependence of molecular vibrations, the mode-Gruneisen parameters and the other characteristic behavior of these condensed molecules have been presented and discussed.

[fluorinated methanes, Raman scattering, FT-IR, phase transition, molecular crystal, mode-Gruneisen parameter, Fermi resonance, LO-TO splitting, transition dipole-transition dipole interaction, covalent-bond, ionic-bond]
〒501-1193 岐阜市柳戸1-1 岐阜大学工学部電気電子工学科
Department of Electronics, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu 501-1193



実験ワンポイント
Rev. High Pressure Sci. Technol. 4-2,163-164(1995)
ダイヤモンドアンビルによる高圧力下での電気抵抗測定
Resistivity Measurement at High Pressure by a Diamond Anvil Cell
松崎 晋  馬崎 真也
Susumu MATSUZAKI, Shinya BASAKI
An improved met=hod by a diamond anvil cell was developed to measure electrical resistivity of a single crystal at high pressures up to 10GPa.

[DAC, electrical resistivity, single crystal, fragile sample, 4-probe method]
〒860-8555 熊本市黒髪2-39-1 熊本大学理学部化学科
Department of Chemistry, Faculty of Science, Kumamoto University, Kurokami 2-39-1, Kumamoto 860-8555



〒606-0805
京都市左京区下鴨森本町 15 (財)生産開発科学研究所内
日本高圧力学会事務局
Tel (075)721-0376 Fax (075)723-9629
koatsu@mbox.kyoto-inet.or.jp