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SYNTHESIS AND CHARACTERIZATION OF CONTINUOUS FIBER-BONDED CERAMIC COMPOSITES

Research Project

Project/Area Number 07650800
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Composite materials/Physical properties
Research InstitutionOSAKA PREFECTURE UNIVERSITY

Principal Investigator

OKAMURA Kiyohito  COLLEGE OF ENGINEERING,OSAKA PREFECTURE UNIVERSITY,PROFESSOR, 工学部, 教授 (70005974)

Co-Investigator(Kenkyū-buntansha) TOSHIO Shimoo  COLLEGE OF ENGINEERING,OSAKA PREFECTURE UNIVERSITY,ASSOCIATE PROFESSOR, 工学部, 助教授 (10081374)
Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1996: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1995: ¥1,600,000 (Direct Cost: ¥1,600,000)
KeywordsComposites / Ceramics / Ceramic Fiber / Silicon Carbide / High-Temperature Pyrolysis / Microstructure / 微細組織
Research Abstract

Polymer-derived SiC system fibers are of interest as reinforced fibers for ceramic-matrix composites. The fibers contain substantial amounts of oxygen as well as carbon, beyond the stoichiometric ratio of SiC,and are in an amorphous state. As the fibers are thermodynamically unstable at elevated temperatures (above 1300゚C), they have a tendency to crystallize into beta-SiC,generating SiO and CO gases. Such pyrolysis, results in remarkable reduction of fiber strength. However, we have found that the pyrolysis of the fibers are suppressed appreciable by the presence of the surface oxide film. In this research works, the thermal stability of these fibers coated with oxide layrs were investigated in detail. And then, the pyrolytic behavior of these fibers of alumina compact body was investigated. The pyrolysis of these fibers was suppressed by the presence of alumina powders.
Si-Ti-C-O fibers with 13mass% oxygen were heat-treated in a stream of oxygen gas at 1300゚C,and the fibers coated with oxide layr of 300-500nm were obtained. Their unidirectional laminated fibers sheets were hot-pressed at 1700゚C in Ar, and continuous fiber-bonded ceramic composites were prepared.The composites were formed into several kind of shapes to observe its surface, cross-section and microstructure using SEM and TEM,with the cutting machine bought by GRANT-IN -AID FOR SCIENTIC RESEARCH ((C)(2)). The composites contained of nano-scale structure. The composites were oxidized at 1300゚-1500゚C in oxygen atmosphere, and their mass gains were 0.02,0.06 and 0.07% respectively, and the composites are considered to be excellent for oxidation resistance.
We continue to investigate the synthesis and severe environment properties of the developed fiber-bonded ceramic composites in detail.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report

Research Products

(24 results)

All Other

All Publications (24 results)

  • [Publications] K.Kakimoto, T.Shimoo, K.Okamura: "The Oxidation Behavior of a Si-Ti-C-O Fibre with a Low Oxidation Content" J.Ceram.Soc.Japan. 103. 557-562 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] M.Narisawa, Y.Itoi, K.Okamura: "Electrical Resistivity of Si-Ti-C-O Fibres after Rapid Heat Treatment" J.Mater.Sci.30. 3401-3406 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 岡村 清人, 下尾 聡夫, 瀬口 忠男: "耐環境性複合材料の強化セラミック繊維の現状と今後の展開" ニューセラミックス. 8. 1-6 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 下尾 聡夫, 前田 孝志, 岡村 清人: "N_2雰囲気下おけるアルミナ粉末中でのSi-C-O系繊維の熱分解挙動" J.Ceram.Soc.Japan. 104. 169-173 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 下尾 聡夫, 岡村 清人: "アルミナ基複合材料中のSi-C-O系繊維の熱分解挙動" J.Ceram.Soc.Japan. 104. 451-453 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Shimoo, K.Okamura, T.Hayatsu: "Effect of Atmosphere on Pyrolysis of Nicalon" J.Mater Sci.31. 4407-4413 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Shimoo, K.Okamura,: "Pyrolytic Behavior of Si-Ti-C-O Fibre in Alumina Powder" J.Mater Sci.31. 5113-5118 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 下尾 聡夫, 塚田 一郎, 成澤 雅紀, 瀬口 忠男, 岡村 清人: "種々の加熱温度で焼成された低酸素SiC系繊維の特性評価" J.Ceram.Soc.Japan. 104. 1070-1074 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] K.Kakimoto, T.Shimoo and K.Okamura: ""The Oxidation Behavior of a Si-Ti-C-O Fiber with a Low Oxygen Content"" J.Ceram.Soc.Japan. 103. 557-562 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] M.Narisawa, Y.Itoi and K.Okamura: ""Electrical Resistivity of Si-Ti-C-O fibers after Rapid Heat Treatment"" J.Mater.Sci.30. 3401-3406 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] K.Okamura, T.Shimoo, T.Seguchi: ""Present and Future Development of Reinforcement Ceramic Fibers for Severe Environment Composites"" New Ceramics. 8. 1-6 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Shimoo, T.Maeda K.Okamura: ""Pyrolytic Behavior of Si-C-O Fiber in Alumina Powder under N_2 Atmosphere"" J.Ceram.Soc.Jpn. 104. 169-173 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Shimoo and K.Okamura: ""Pyrolytic Behavior of Si-C-O Fiber in Alumina Matrix Composite"" J.Ceram.Soc.Jpn. 104. 451-453 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Shimoo, K.Okamura and T.Hayatsu: ""Effect of Atmosphere on Pyrolysis of Nicalon"" J.Mater.Sci.31. 4407-4413 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Shimoo and K.Okamura: ""Pyrolytic Behavior of Si-Ti-C-O Fiber in Alumina Powder"" J.Mater.Sci.31. 5113-5118 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Shimoo, I.Tsukada, M.Narisawa, T.Seguchi, K.Okamura: ""Characterization of Low-Oxygen SiC Fiber Fired at Different Heating Rates"" J.Ceram.Soc.Jpn.104. 1070-1074 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 下尾聡夫,前田孝志,岡村清人: "N_2雰囲気下におけるアルミナ粉末中でのS_4^L-C-O系繊維の熱分解挙動" J. Ceram. Soc. Japan. 108巻3号. 169-173 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 下尾聡夫,岡村清人: "アルミナ基複合材料中のSi-C-O系繊維の熱分解挙動" J. Ceram. Soc. Japan. 104巻・5号. 451-453 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T. Shimoo, K. Okamura, T. Hayata: "Effect of atircshlere on Pyrolysis of Nicalon" J. Mater. Sci.31巻,8号. 4407-4413 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T. Shimoo, K. Okamura: "Pyiolytis behauior of Si-C-O fibre in alumin Pocoder." J. Mater. Sci.31巻,10号. 5113-5118 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 下尾聡夫,塚田一郎,成澤雅紀,瀬口忠男,岡村清人: "種々の加熱速度で焼成された低酸素SiC系繊維の特性評価" J. Ceram. Soc. Japan. 104巻,11号. 1070-1074 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] K.Kakimoto,T.Shimoo and K.Okamura: "The Oxidation Behavior of a Si-Ti-C-O Fibre with a Low Oxygen Content" J.Ceram.Soc,Japan. 103. 557-562 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] M.Narisawa,Y.Itoi and K.Okamura: "Electrical Resistivity of Si-Ti-C-O Fibres after Rapid Heat Treatment" J.Mater.Sci.30. 3401-3406 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 岡村清人,下尾聰夫,瀬口忠男: "耐環境性複合材料の強化セラミック繊維の現状と今後の展開" ニューセラミックス. 8. 1-6 (1995)

    • Related Report
      1995 Annual Research Report

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Published: 1995-03-31   Modified: 2016-04-21  

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