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The development of mechanical spectroscopy for extreamlly low frequency and very high temperature and the application for the ceramics

Research Project

Project/Area Number 11650696
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

OTA Ken'ichi  ISIR, OSAKA UNIVERSITY Research Associate, 産業科学研究所, 助手 (10150351)

Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 2000: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 1999: ¥1,900,000 (Direct Cost: ¥1,900,000)
Keywordsmecanical spectroscopy / internal friction / ceramics / grain boundary / almina / silicon nitride / silicon carbide / high temperature / ヘルムホルツコイル / ジルコニア / 強制振動法 / 粘性 / 拡散
Research Abstract

Torsion pendulum was applied to the mechanical spectroscopy for extremely low frequency and very high temperatures. torsion stress was applied by the magnetic force using by the magnet placed on the torsion bar. Hermholtz type magnet was used in the system, because the stress is independent for the strain. Sin wave signal, which generated by the phase analyzer, was amplified for the current of magnet coil. The eddy current type displacement sensor placed by the torsion bar detected the strain of the specimen. The sensitivity of the detector is less than 1/6000 radian. The stress and strain signal was analyzed by the frequency response analyzer (NF5090), and then the phase angle was calculated within the error of 1/6000 radian. This system is affected by the atmospheric noise ; the insulator can control the noise. For the measuring up to very high temperature, I used the carbon furnace, which is used for high temperature internal friction measurement. Thermal shield for protection of magnets and the sensor was set around the furnace. This system is applied for the measurement of high temperature mechanical spectroscopy of the ceramics. The variable information from the grain boundary was obtained by using newly developed mechanical spectroscopy.

Report

(3 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report

Research Products

(12 results)

All Other

All Publications (12 results)

  • [Publications] 太田健一: "超高温での無機材料のメカニカルスペクトロスコピー"鉱物学会誌. 29. 37-42 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Ota: "Chemistry and inherent viscosity of glass segregated at grain boundary of silicon nitride and silicon carbide ceramics"J.Non-cryst.Solids,. 271. 79-87 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Ota: "Grain-boundary viscosity of BaO-doped silicon carbide"J.Am.Ceram.Soc.,. 83. 563-570 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Ota: "Grain boundary viscosity of pre-oxidized and nitrogen annealed slicon carbides"J.Am.Ceram.Soc.,. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.OTA: "The Mechanical Spectroscopy of ceramics at very high temperatures"KOUBUTUGAKKAISHI. 29, [1]. 37-42 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] G.Pezzotti, T.Wakasugi, T.Nishida, K.Ota and H.J.Kleebe: "Chemistry and inherent viscosity of glass segregated at grain boundary of silicon nitride and silicon carbide ceramics"J.Non-cryst.Solids. vol.271[1]. 79-87 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] G.Pezzotti, H.Nishimura, K.Ota and H.J.Kleebe: "Grain-boundary viscosity of Bao-doped silicon carbide"J.Am.Ceram.Soc.. vol.83[3]. 563-570 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] G.Pezzotti, H.Nishimura, K.Ota nad H.J.Kleebe: "Grain boundary viscosity of pre-oxidized and nitrogen annealed slicon carbides"J.Am.Ceram.Soc.. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] G.Pezzotti.: "Chemistry and inherent viscosity of glass segregated at grain boundary of silicon nitride and silicon carbide ceramics"J.Non-cryst.Solids. 271. 79-87 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Ota: "Structure and viscosity of grain boundary in high-purity SiAION ceramics"J.Am.Ceram.Soc.,(2000). (印刷中).

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Ota: "Grain-boundary viscosity of BaO-doped silicon carbide"J.Am.Ceram.Soc.,(2000). (印刷中).

    • Related Report
      2000 Annual Research Report
  • [Publications] 太田健一,岡本和弘: "高純度サイアロンにおける粒界の構造と粘性"日本金属学会誌. 63・12. 1479-1484 (1999)

    • Related Report
      1999 Annual Research Report

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Published: 1999-03-31   Modified: 2016-04-21  

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