B, Si添加によるP/M SUS304L鋼の液相焼結温度の低温化と各種物性の改善 Lowering of Liquid-phase Sintering Temperature and Improvement of Some Properties of P/M SUS304L Stainless Steels by the Addition of Silicon and Boron

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The addition of silicon (Si) and boron (B) to SUS304L stailess steel powders has been examined, aiming at lowering the liquid-phase sintering temperature, and at improving the mechanical properties and corrosion resistance. Addition of Si resulted in the duplex structures of austenite (γ) and ferrite (α), which gained the strength due to the crystallization of α phase. By the over addition of Si, the ductility was lowerd. Addition of B improved the ductility, which was due to the precipitation of fine borides around the grain boundaries. These precipitation formed the spherical pore. By the simultaneous addition of both elements, the sintering temperature was lowerd to 1500K, which was lower than that of single element addition by 100-150K. The specimens showed an improved mechanical properties such as 595MPa in tensile strength and 36.7% in elongation. The corrosion resistance by intergranular corrosion test of a boiling solution of 65% HNO a was not improved by the addition of Si and B. This may be due to low sintering density and the existance of many pore defect.

収録刊行物

  • 粉体および粉末冶金

    粉体および粉末冶金 43(9), 1111-1116, 1996-09-15

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002013086
  • 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
    4036696
  • 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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