Microstructures and Mechanical Properties of Spark Plasma Sintered Al_2O_3-Co Composites Using Electroless Deposited Al_2O_3-Co Powders

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Microstructures and mechanical properties of spark plasma sintered (SPS) Al<SUB>2</SUB>O<SUB>3</SUB>-Co composites were investigated depending on the sintering temperatures (900–1200°C) and cobalt contents (0∼12 mass%). The material properties of relative density and fracture toughness increased as the sintering temperature and Co content (up to 12 mass%Co) increased. In the SPSed Al<SUB>2</SUB>O<SUB>3</SUB>-Co composite sintered at 1200°C, maximum values of relative density and fracture toughness about 99.3% and 8.1 MPam<SUP>1⁄2</SUP>, respectively were obtained. The fracture morphology of SPSed Al<SUB>2</SUB>O<SUB>3</SUB>-12 mass%Co composite showed a semi-brittle fracture mode due to the homogeneous dispersion of fine-sized Co particles.

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  • Materials transactions  

    Materials transactions 49(6), 1451-1455, 2008-06-01 

    The Japan Institute of Metals and Materials

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各種コード

  • NII論文ID(NAID)
    10021147866
  • NII書誌ID(NCID)
    AA1151294X
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13459678
  • NDL 記事登録ID
    9519571
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z53-J286
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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