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Journal Articles

Swelling of radiation-cured polymer precursor powder for silicon carbide by pyrolysis

Takeyama, Akinori; Idesaki, Akira; Sugimoto, Masaki; Yoshikawa, Masahito

Journal of Asian Ceramic Societies (Internet), 3(4), p.402 - 406, 2015/12

Journal Articles

Development of silicon carbide micro-tube from precursor polymer by radiation oxidation

Sugimoto, Masaki; Idesaki, Akira; Tanaka, Shigeru; Okamura, Kiyohito*

Key Engineering Materials, 247, p.133 - 136, 2003/00

no abstracts in English

Journal Articles

Fine SiC fiber synthesized from organosilicon polymers; Relationship between spinning temperature and melt viscosity of precursor polymers

Idesaki, Akira; Narisawa, Masaki*; Okamura, Kiyohito*; Sugimoto, Masaki; Tanaka, Shigeru; Morita, Yosuke; Seguchi, Tadao; Ito, Masayoshi*

Journal of Materials Science, 36(23), p.5565 - 5569, 2001/12

 Times Cited Count:36 Percentile:77.69(Materials Science, Multidisciplinary)

A very fine silicon carbide (SiC) fiber with diameter of 6 $$mu$$ m, about a half of that of a commercially available SiC fiber, was synthesized from a polymer blend of polycarbosilane (PCS) and polyvinylsilane (PVS). The fine SiC fiber was obtained by optimizing the composition and the spinning temperature of PCS-PVS polymer blends. In order to determine these optimum conditions, the relationship between temperature and melt viscosities of the polymer blends was investigated. As a result, it was found that the optimum spinning temperature range was within a temperature range where the melt viscosity is 5-10Pa$$cdot$$s. Moreover, by blending PVS with PCS, the spinning temperature of the polymer blends was lowered, the spinnability of polymer system was improved, and finer polymer fiber was obtained compared with PCS. The optimum content of PVS in the polymer blend was 15-20wt%.

Journal Articles

Development of SiC/SiC composites from Si-based polymer blend by radiation application

Sugimoto, Masaki; Tanaka, Shigeru; Ito, Masayoshi*; Okamura, Kiyohito*

High Temperature Ceramic Matrix Composites, p.357 - 361, 2001/10

no abstracts in English

Journal Articles

Fine silicon carbide fibers synthesized from polycarbosilane-polyvinylsilane polymer blend using electron beam curing

Idesaki, Akira*; Narisawa, Masaki*; Okamura, Kiyohito*; Sugimoto, Masaki; Morita, Yosuke; Seguchi, Tadao; Ito, Masayoshi*

Journal of Materials Science, 36(2), p.357 - 362, 2001/01

 Times Cited Count:15 Percentile:54.95(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Fine silicon carbide fiber synthesized from a silicon-based polymer blend using radiation curing

Idesaki, Akira; Sugimoto, Masaki; Tanaka, Shigeru; Morita, Yosuke; Narisawa, Masaki*; Okamura, Kiyohito*; Ito, Masayoshi*

High Temperature Ceramic Matrix Composites, p.35 - 40, 2001/00

Silicon carbide (SiC) fiber, which is one of the likeliest candidates as a reinforcement fiber of ceramic matrix composites (CMCs), is synthesized from polycarbosilane (PCS). The diameter of thus SiC fibers is 10-15 $$mu$$m. In order to fabricate CMCs with 3-dimensional complex shapes, it is important to develop a SiC fiber with diameter of less than 10 $$mu$$m, flexibility, and high strength. In order to improve the spinnability of precursor polymer, we have blended polyvinylsilane (PVS), which is a liquid polymer at room temperature, to PCS as a spinning additive. According to relationship between temperature and melt viscosity of the polymer blend, it was found that the polymer can be melt-spun at about 490K, 110K lower than PCS (about 600K), and that the spinnability of the polymer is improved by blending PVS. Fine polymer fiber was obtained from the polymer blend, and finally, very fine SiC fiber with the average diameter of 6 $$mu$$m was synthesized from the PCS-PVS polymer blend.

Journal Articles

Ceramic fibers from polymer precursors

*; *; Okamura, Kiyohito*; Sugimoto, Masaki; Seguchi, Tadao

Fine Ceramic Fibers, p.207 - 229, 1999/00

no abstracts in English

Journal Articles

Use of blended precursors of poly(vinylsilane) in polycarbosilane for silicon carbide fiber synthesis with radiation curing

Narisawa, Masaki*; Idesaki, Akira*; *; *; Sugimoto, Masaki; Seguchi, Tadao; Ito, Masayoshi*

Journal of the American Ceramic Society, 82(4), p.1045 - 1051, 1999/00

 Times Cited Count:21 Percentile:76.84(Materials Science, Ceramics)

no abstracts in English

Journal Articles

Development of SiC fiber-reinforced SiC composites by radiation-cured preceramic polymer

Sugimoto, Masaki; Morita, Yosuke; Seguchi, Tadao; *

Key Engineering Materials, 164-165, p.11 - 14, 1999/00

no abstracts in English

Journal Articles

SiC-based fibers synthesized from hybrid polymer of polycarbosilane and polyvinylsilane

Idesaki, Akira*; Narisawa, Masaki*; *; Sugimoto, Masaki; Morita, Yosuke; Seguchi, Tadao; Ito, Masayoshi*

Key Engineering Materials, 164-165, p.39 - 42, 1999/00

no abstracts in English

Journal Articles

High performance ceramic fiber synthesis from organic fiber by radiation application

Sugimoto, Masaki; Seguchi, Tadao; *

Proc. of RadTech Asia'97, p.410 - 413, 1997/00

no abstracts in English

Journal Articles

Sinber- a silicon nitride fiber with excellent thermal resistance, tensile strength and electrical resistivity

*; *; Kasai, Noboru; Seguchi, Tadao

Hitachi Cable Rev., 0(15), p.79 - 82, 1996/08

no abstracts in English

Journal Articles

Synthesis of silicon carbide fibers from blended precursor of organosilicon polymers with radiation curing

*; *; *; Sugimoto, Masaki; Seguchi, Tadao; Ito, Masayoshi*

Progress in Advanced Materials and Mechanics (Proc. of ICAM-96), 0, p.121 - 125, 1996/00

no abstracts in English

Journal Articles

Radiation application for silicon carbide fiber synthesis from polycarbosilane fiber with controlled oxygen content

Seguchi, Tadao; Sugimoto, Masaki; *

Progress in Advanced Materials and Mechanics (Proc. of ICAM-96), 0, p.221 - 225, 1996/00

no abstracts in English

Journal Articles

Oxygen-free ceramic fibers from organosilicon precursors and E-beam curing

*; *; Seguchi, Tadao

High-Temperature Ceramic-Matrix Composites II (HT-CMC2), 0, p.65 - 74, 1995/00

no abstracts in English

Journal Articles

Reaction mechanisms of silicon carbide fiber synthesis by heat treatment of polycarbosilane fibers cured by radiation, II; Free radical reaction

Sugimoto, Masaki; *; *; Seguchi, Tadao

Journal of the American Ceramic Society, 78(7), p.1849 - 1852, 1995/00

 Times Cited Count:36 Percentile:84.65(Materials Science, Ceramics)

no abstracts in English

Journal Articles

Reaction mechanisms of silicon carbide fiber synthesis by heat treatment of polycarbosilane fibers cured by radiation, I; Evolved gas analysis

Sugimoto, Masaki; *; *; Seguchi, Tadao

Journal of the American Ceramic Society, 78(4), p.1013 - 1017, 1995/00

 Times Cited Count:69 Percentile:93.88(Materials Science, Ceramics)

no abstracts in English

Journal Articles

Heat resistant SiC-fiber synthesis and reaction mechanisms from radiation-cured polycarbosilane fiber

Seguchi, Tadao; Sugimoto, Masaki*; *

High Temperature Ceramic Matrix Composites; 6th European Conf. on Composite Materials: HT-CMC, p.51 - 57, 1993/00

no abstracts in English

Journal Articles

Synthesis of heat-resistant SiC fiber by radiation processing

Seguchi, Tadao; Kasai, Noboru; *

Proc. of the 4th Int. Symp. on Advanced Nuclear Energy Research (JAERI-CONF 1/JAERI-M 92-207), p.62 - 65, 1992/12

no abstracts in English

Journal Articles

Thermal stability of the low oxygen silicon carbide fibers derived from polycarbosilane

*; *; *; *; Kasai, Noboru; Seguchi, Tadao; *

Ceramic Engineering and Science Proceedings,Part 1, p.209 - 217, 1992/00

no abstracts in English

23 (Records 1-20 displayed on this page)