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Yoshio Sakka, Atsushi Honda, Tetsuo Uchikoshi, Tohru Suzuki, Yusuke Mo ...
Session ID: 2C08
Published: 2004
Released on J-STAGE: September 01, 2006
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Hidehiro Kamiya, Madoka Hasegawa, Makiko Sakurazawa, Kimitoshi Sato, M ...
Session ID: 2C09
Published: 2004
Released on J-STAGE: September 01, 2006
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Aggregation and dispersion behavior of alumina and silicon carbide particles in dense aqueous suspension was controlled by polymer dispersant with different hydrophilic and hydrophobic group ration. Green was prepared from each suspension by slip and tape casting. The relationship between aggregation behavior in suspension and green microstructure was discussed.
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Makio Naito, Hiroya Abe
Session ID: 2C10
Published: 2004
Released on J-STAGE: September 01, 2006
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Yoshihiro Inoue, Masayoshi Fuji, Chika Takai, Minoru Takahashi
Session ID: 2C11
Published: 2004
Released on J-STAGE: September 01, 2006
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Capillary electrophoresis has a lot of advantages for the slurry component analysis. However, the confirmation of the quantitativity to the sample which the particle mixed is not performed. It is necessary to examine various conditions of the analysis to apply capillary electrophoresis as a slurry analysis method. In this study, the quantitative method of dispersant in slurry which had been prepared with smaller particle than the capillary inside diameter was examined.
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Naoki Adachi, Hiroto Hasegawa, Osamu Sakurada, Minoru Hashiba
Session ID: 2C12
Published: 2004
Released on J-STAGE: September 01, 2006
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A direct casting method to establish near-net-shape was investigated. Direct casting was performed using alumina slurry with different concentrations of zirconium acetate, which was used as a dispersant for preparation of the alumina slurry over the weak acidic range. In this study, the influence of the zirconium acetate used as a dispersant on the character of the alumina green and the firing bodies was evaluated. The green bodies from these slurries were fabricated by this method using the enzyme-catalyzed urea-urease reaction.
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Takahiro Tomita, Shinji Kawasaki, Kiyoshi Okada
Session ID: 2C13
Published: 2004
Released on J-STAGE: September 01, 2006
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Ceramic foams are generally prepared by using sacrificial organic materials as pore-former and generate a large amount of CO
2 during firing due to decomposition of the added organic matter. In our previous study, in order to generate less amount of CO
2, environmentally benign preparation method of silica foam was developed by combining sol-gel reaction of silica sol and mechanical foaming without added organic pore formers. In this work, cordierite foam was prepared on the basis of our preparation method of silica foam, i.e. cordierite foam was obtained by firing silica gel foam containing various oxide powders.
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hiroyuki Miyazaki, Yu-ichi Yoshizawa, Kiyoshi Hirao
Session ID: 2C14
Published: 2004
Released on J-STAGE: September 01, 2006
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Toshihiro Isobe, Yoshikazu Kameshima, Akira Nakajima, Kiyoshi Okada
Session ID: 2C15
Published: 2004
Released on J-STAGE: September 01, 2006
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Takaaki Nagaoka, Yuji Hotta, Kimiyasu Sato, Takahisa Tsugoshi, Koji Wa ...
Session ID: 2C16
Published: 2004
Released on J-STAGE: September 01, 2006
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Alumina-based ceramic with low-high porosity was fabricated by using the hydraulic alumina-based inorganic binder. Hydraulic properties of the alumina-based binder, forming and sintering of the binder mixed powder was studied.
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Shoichi Kume, Masaki Yasuoka, Naoki Omura, Koji Watari
Session ID: 3C01
Published: 2004
Released on J-STAGE: September 01, 2006
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Yoshikazu Kameshima, Kosuke Matsuzaki, Akira Nakajima, Kiyoshi Okada
Session ID: 3C02
Published: 2004
Released on J-STAGE: September 01, 2006
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Direct nitride AlN powder which was prepared using Li addition was mixed with Y
2O
3 for sintering additive, and was formed to pellet, and then was heated at 1500 - 1800 ºC under nitrogen atmosphere. Main phase of sintered samples was AlN phase. The density of sintered samples increased sharply between 1500º and 1600 ºC. After heated at 1600 ºC for 1h, the sample of 0.8 mass% Y
2O
3 addition attained the relative density of 96 %. In this method, Li
2O phase distributes homogeneously on surface of raw AlN powder. Therefore, the densification is considered to come from the promotion of liquid phase containing Li
2O.
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Naoaki Ishibashi, Yasuhiro Kodera, Takeshi Yamamoto, Manshi Ohyanagi
Session ID: 3C03
Published: 2004
Released on J-STAGE: September 01, 2006
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Keishi Nishio, Rena Maeda, Tohru Kineri, Atsuo Yasumori
Session ID: 3C04
Published: 2004
Released on J-STAGE: September 01, 2006
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Textured Bi
4Ti
3O
12 ceramics was prepared by templated grain growth (TGG) method combined with spark plasma sintering (SPS) method. The microstructure of ceramics was evaluated by using SEM and XRD investigation. Precursor powder of Bi
4Ti
3O
12 was obtained by co-precipitation method with Ti alkoxide and Bi oxide. Platelet Bi
4Ti
3O
12 was synthesized from precursor powder by flux method using NaCl and KCl. The ceramics was prepared by heat treatment using SPS the mixture of the platelet Bi
4Ti
3O
12 and amorphous precursor powder. As a result, the dense ceramics could be obtained easily without crystalline of amorphous precursor. After heat treatment of the ceramics, high textured and high dense Bi
4Ti
3O
12 ceramics could be obtained.
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Sintarou Isiyama
Session ID: 3C05
Published: 2004
Released on J-STAGE: September 01, 2006
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Joint test of ceramics has been conducted for the purpose of anthi-corrosion structure for IS hydrogen plant. Joitn process and physical and mechacnial characterzation of jointed SiC and Si3N4 is reported in presen study
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Daiki Atarashi, Etsuo Sakai, Susumu Honda, Akinori Itoh, Masaki Daimon
Session ID: 3C06
Published: 2004
Released on J-STAGE: September 01, 2006
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Chika Takai, Masayoshi Fuji, Minoru Takahashi
Session ID: 3C07
Published: 2004
Released on J-STAGE: September 01, 2006
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Ceramic slurry involving multi-component powders is often used in a variety of ceramic fabrication processes. In this study, we investigated the hetero-coagulation behavior in a mixed slurry that have different isoelectric points and variety particle size. TEM observation of the
in situ solidified slurry with 10 mass% solid concentration revealed the interesting change of coagulation with pH. These features of coagulation were interpreted in conjunction with the results of zeta potential and viscosity.
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Koichiro Adachi, Masayoshi Fuji, Minoru Takahashi
Session ID: 3C08
Published: 2004
Released on J-STAGE: September 01, 2006
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Fa-Zhi Zhang, Masayoshi Fuji, Minoru Takahashi
Session ID: 3C09
Published: 2004
Released on J-STAGE: September 01, 2006
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Growth of MFI zeolite membranes on porous alfa-alumina substrates precoated with and without mesoporous silica sublayer was performed by
in situ crystallization, with the focus on the investigation of the membrane orientation evolution. Continuous
b-oriented MFI membrane can be prepared on the mesoporous silica sublayer coated substrate. After a long growth period secondary nucleation taking place in the bulk reaction solution results in randomly oriented membrane with overgrowth behavior. Discrete
b-oriented crystals are deposited on the uncoated alfa-alumina substrate at the initial stages. As the crystallization proceeds, a membrane with a randomly oriented and eventually [
hoh]-oriented top layer can be obtained. The chemistry property and the surface smoothness of the substrates are suggested to have significant effects on the membrane orientation during growth process.
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Satoshi Ishiguro, chunhong Chen, Sawao Honda, Shinobu Hashimoto, hideo ...
Session ID: 3C10
Published: 2004
Released on J-STAGE: September 01, 2006
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hiroya abe, masayoshi kamai, makio naito, kiyoshi nogi
Session ID: 3C12
Published: 2004
Released on J-STAGE: September 01, 2006
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weiwu Chen, Yu Jia, Shoichi Kume, Yuji Hotta, koji Watari
Session ID: 3C13
Published: 2004
Released on J-STAGE: September 01, 2006
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Perovskite 0.94(Na0.5Bi0.5)TiO3-0.06BaTiO3 is one of the most important candidates for lead-free piezoelectric ceramics. But the properties are still big lower than PZT ceramics after several years study due to its intrinsic structure. In the present work, we will introduce the experimental results on preparation of grain-oriented 0.94(Na0.5Bi0.5)TiO3-0.06BaTiO3-based ceramics by magnetic alignment techniques. The synthesis of modified single crystalline ceramic particles, slip-casting in high magnetic field and resulted microstructure will be described.
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Yu Jia, Cihangir Duran, Yuji Hotta, Koji Watari
Session ID: 3C14
Published: 2004
Released on J-STAGE: September 01, 2006
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Green bodies with a dense and uniform packing can be obtained from colloidally-stable suspensions. This enables fabrication of dense ceramics at lowder sintering temperatures using nano ceramic powders. In this study, dispersition of nano ZrO2 powders (75nm) was performed as a function of PEI content (0 to 4 wt%) and pH. Surface electrical properties were determined from zeta potential measurements. It was found that isoelectric point increases ffrom pH7 (0 wt% PEI) to pH10.5 (4 wt% PEI). Suspensions were prepared as a function of PEI and pH. The suspensions were characterized for stability by sedimentation kinetic, particle size distribution, zeta-potential and TG-DT.
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Yuji Hotta, Yu Jia, Duran Cihangir, Takaaki Nagaoka, Kimiyasu Sato, Ko ...
Session ID: 3C15
Published: 2004
Released on J-STAGE: September 01, 2006
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Kimiyasu Sato, Yuji Hotta, Takaaki Nagaoka, Koji Watari
Session ID: 3C16
Published: 2004
Released on J-STAGE: September 01, 2006
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Kouichi Yasuda
Session ID: 1G01
Published: 2004
Released on J-STAGE: September 01, 2006
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Hirotoshi Inui, Kouichi Yasuda, Tadashi Shiota, Yohtaro Matsuo
Session ID: 1G02
Published: 2004
Released on J-STAGE: September 01, 2006
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Xianting Zeng, Takashi Goto
Session ID: 1G03
Published: 2004
Released on J-STAGE: September 01, 2006
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In precision engineering and electronics industry, the requirements in component specifications become increasingly stringent, which require the surfaces of products or devices with multiple functionalities. Recent technology progresses include duplex or multiple processes and hybrid material structures, which combine two or more different coating process technologies and/or incorporate two or more selected materials or phases to achieve a combination of required coating properties such as high hardness and toughness, low friction and wear coefficients, thermal and chemical stability and other functions. In this presentation, nano-phased hybrid multi-functional coating systems are reviewed. Case studies are reported using physical and chemical vapour deposition, sol-gel, anodising, electro-chemical and spray processes, respectively. The coating design concept, process combination and the product functionalities are discussed.
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Noritaka Iida, Lenggoro I. Wuled, Kikuo Okuyama
Session ID: 1G04
Published: 2004
Released on J-STAGE: September 01, 2006
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Ryouta Kobayashi, Tsuneo Suzuki, Hisayuki Suematsu, Weihua Jiang, Kiyo ...
Session ID: 1G05
Published: 2004
Released on J-STAGE: September 01, 2006
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Keiichi Murai, Yudai Watanabe, Hisayuki Suematsu, Weihua Jiang, Kiyosh ...
Session ID: 1G06
Published: 2004
Released on J-STAGE: September 01, 2006
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Seigo Nishimura, Tomonori Ohta, Hisayuki Suematsu, Jiang Weihua , Kiyo ...
Session ID: 1G07
Published: 2004
Released on J-STAGE: September 01, 2006
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Takayoshi Sasaki
Session ID: 1G08
Published: 2004
Released on J-STAGE: September 01, 2006
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Yoshitaka Ajima, Toshikazu Nishide
Session ID: 1G09
Published: 2004
Released on J-STAGE: September 01, 2006
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Toshikazu Nishide, Tomoko Takahashi
Session ID: 1G10
Published: 2004
Released on J-STAGE: September 01, 2006
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Akihiro Tanaka, Atsushi Mineshige, Masafumi Kobune, Tetsuo Yazawa
Session ID: 1G11
Published: 2004
Released on J-STAGE: September 01, 2006
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peixin zhu, Yoshitake Masuda, kunihito koumoto
Session ID: 1G12
Published: 2004
Released on J-STAGE: September 01, 2006
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Hiroaki Hamaguchi, Yoshitake Masuda, Hiromichi Ohta, Kunihito Koumoto
Session ID: 1G13
Published: 2004
Released on J-STAGE: September 01, 2006
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Noriko Saito, Hajime Haneda, Kunihito Koumoto
Session ID: 1G14
Published: 2004
Released on J-STAGE: September 01, 2006
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Kenji Takahashi, Kiyoharu Tadanaga, Atsunori Matsuda, Masahiro Tatsumi ...
Session ID: 1G15
Published: 2004
Released on J-STAGE: September 01, 2006
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Phenylsilsesquioxane micropatterns have been prepared by the electrophoretic sol-gel deposition using ITO substrates with a hydrophobic-hydrophilic patterned surface. After the electrophoretic deposition, phenylsilsesquioxane thick films were formed on hydrophilic areas on the pattern. Convexly shaped phenylsilsesquioxane microlenses were fabricated only on the hydrophilic areas with a heat treatment.
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Yuusuke Daiko, Klein L.C., Toshihiro Kasuga, Masayuki Nogami
Session ID: 1G16
Published: 2004
Released on J-STAGE: September 01, 2006
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Koji Kuraoka, Yuri Hamano, Tsutomu Ioroi, Kazuaki Yasuda, Tetsuo Yazaw ...
Session ID: 1G17
Published: 2004
Released on J-STAGE: September 01, 2006
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Akira Kuwahara, Shinya Suzuki, Masaru Miyayama
Session ID: 1G18
Published: 2004
Released on J-STAGE: September 01, 2006
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The composition of V2O5 and carbon fiber was attempted to gain the high rate properties by controlling the microstructure of the active material. The composite electrode was prepared by the dispersing of the V2O5 sol, pure water, carbon fiber and surfactant followed by drying. The specific capacity of the V2O5/carbon fiber composite electrode was 286mAh/g at high current density of 80A/g. This value was approximately 75% in response to the specific capacity that was examined at the lowest current density of 100mA/g. The high rate performance of the V2O5/carbon fiber was caused by the electrical conductivity of carbon fiber.
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masami hashimoto
Session ID: 2G01
Published: 2004
Released on J-STAGE: September 01, 2006
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Eiji Fujii, koji kawabata, mizuki Ohkubo, Kanji Tsuru, Satoshi Hayakaw ...
Session ID: 2G02
Published: 2004
Released on J-STAGE: September 01, 2006
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Shigeki Nishida, Masato Tamai, Atsushi Nakahira
Session ID: 2G03
Published: 2004
Released on J-STAGE: September 01, 2006
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Takayuki Ban, Dominik Bruehwiler, Gion Calzaferri
Session ID: 2G04
Published: 2004
Released on J-STAGE: September 01, 2006
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The insertion of a triethoxysilylated coumarin dye into the channels of zeolite L from its CH2Cl2 solution was examined. When the coumarin dye in the zeolite was excited with UV light, fluorescence from the dye was observed only at the base planes of the cylindrical zeolite L crystals, indicating selective modification of the zeolite L channel entrances. When the zeolite particles were dispersed in ethanol immediately after the insertion, leaching of the dye was observed. By refluxing the particles in toluene, which leads to the formation of covalent siloxane bonds between the triethoxysilyl group and silanol groups at the entrances of the zeolite channels, leaching was avoided. Selective modification of the zeolite channel entrances is achieved by the separation of the insertion and covalent bond formation processes and by an appropriate choice of solvent for the insertion of the dye into the zeolite channels. When zeolite L crystals containing pyronine were modified with the triethoxysilylated coumarin and irradiated with UV light (335 nm), energy transfer from the coumarin to pyronine was observed. For systems in which energy transfer between a dye-zeolite guest-host material and an external device such as a semiconductor is attempted, this selective modification constitutes an efficient interface for mediating photonic energy transfer.
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Tomoya Ohno, Hisao Suzuki, Masayuki Fujimoto
Session ID: 2G05
Published: 2004
Released on J-STAGE: September 01, 2006
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Hideyuki Nakano, Takuya Mitsuoka, Masahiko Ishii, Azusa Tsukigase, Hir ...
Session ID: 2G06
Published: 2004
Released on J-STAGE: September 01, 2006
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Yoko Suyama, Keiichi Watanabe, Kenji Shida
Session ID: 2G07
Published: 2004
Released on J-STAGE: September 01, 2006
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Atsuko Shimosaka
Session ID: 2G08
Published: 2004
Released on J-STAGE: September 01, 2006
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