β-サイアロンの組成による強度特性

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書誌事項

タイトル別名
  • Effect of Composition on Mechanical Properties of β-Sialon
  • ベータ サイアロン ノ ソセイ ニ ヨル キョウド トクセイ

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説明

The preparation of β-sialon from a powder mixtures of Si3N4, Al2O3 and AlN was studied with respect to the media and duration of ball milling and the particle size of Al2O3. The mechanical properties of hot-pressed β-sialon with z=1, 2, 3 and 4 were measured. The distribution of flexural strength was smallest after 72h milling. The effect of the average particle size of Al2O3 (<1μm) on the flexural strength was not clear. The flexural strength and Vickers hardness of β-sialon decreased from about 50kg/mm2 to about 38kg/mm2 and from about 2100kg/mm2 to about 1300kg/mm2, respectively, with increasing z-value from 1 to 4. Young's modulus decreased from 2.91×106kg/cm2 to 2.34×106kg/cm2 with increasing z-value from 1 to 3, howerver, it increased slightly to 2.37×106kg/cm2 at z=4. Fracture toughness decreased from about 3.6MN/m3/2 to about 2.4MN/m3/2 with increasing z-value from 1 to 3, and it was almost constant from z=3 to z=4.

収録刊行物

  • 窯業協會誌

    窯業協會誌 93 (1079), 370-375, 1985

    公益社団法人 日本セラミックス協会

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