焼結体の音速測定による気孔率分布および弾性的・機械的特性評価 Evaluation of porosity distribution, elastic and mechanical property of sintered compacts by measurements of sound velocities.

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In this study, the effects of porosity on sound properties, elastic moduli (Young's modulus, shear modulus and Poisson's ratio) and tensile strength of sintered compacts were investigated. The sound velocities were obtained by an acoustic pulse method.<BR>At the same porosity, the elastic moduli increased with increasing of sintering temperature. In the case that the longitudinal wave velocity and sintering temperature were known, the porosity of measurement area (partial porosity) was able to calculated.<BR>In addition, the prediction of fractured position with an acoustic microscope and the calculation of partial porosity of fractured position from measurement of the longitudinal wave velocity were carried out, we obtained the relationships between elastic moduli, tensile strength and porosity of fractured position. From the results, since the partial porosity of fractured position were larger than the average porosity, the elastic moduli and the tensile strength against average porosity were underestimated in comparison with that against partial porosity of fractured position.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 45(12), 1116-1121, 1998-12-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002053334
  • NII書誌ID(NCID)
    AN00222724
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    05328799
  • NDL 記事登録ID
    4629445
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-274
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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