放電プラズマ焼結法によるAl_2O_3-cBN傾斜材料の作製 Preparation of Al_2O_3-cBN Functionally Graded Material by Spark Plasma Sintering

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抄録

Al<SUB>2</SUB>O<SUB>3</SUB>-cBN functionally graded material (FGM) was synthesized by spark plasma sintering (SPS) using powder compact with graded compositions containing 0 to 20 vol% cBN under a uniaxial pressure of 100 MPa. Densification, phase transformation of cBN, microstructure, hardness and fracture toughness of the FGM were investigated. Al<SUB>2</SUB>O<SUB>3</SUB>-cBN FGM with relative density of more than 99% was prepared at 1300°C for 600 s. No obvious interface between Al<SUB>2</SUB>O<SUB>3</SUB> and cBN layers was observed, and cBN particles were uniformly dispersed in an Al<SUB>2</SUB>O<SUB>3</SUB> matrix. Vickers hardness and fracture toughness continuously increased with cBN content, and reached to 28 GPa and 5 MPa·m<SUP>1/2</SUP> respectively at the surface layer.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 55(5), 373-377, 2008-05-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10021173283
  • 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
    9531727
  • 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  NDL  J-STAGE 
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