フラックス添加によるステンレス鋼の焼結促進機構 Mechanism of Enhanced Sintering of Stainless Steel by Fluxing

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A small amount of borax enhanced the sintering of SUS316L stainless steel powder compacts. The compacts of the -100mesh water-atomized powder with 2mass%Na<SUB>2</SUB>B<SUB>4</SUB>O<SUB>7</SUB> were sintered at different temperatures in vacuum. SEM micrographs and EPMA or EDX figures of the samples indicate that the silica-based oxide film on the surface of the steel particles has dissolved into the melted flux or borax at 1070K, that Cr<SUB>2</SUB>B particles have precipitated from the steel matrix while silicon and manganese have concentrated into the flux following a steel/flux reaction at 1270K, and that a Fe-Cr-B eutectic liquid has been formed and the Cr<SUB>2</SUB>B particles have disappeared above 1470K. Sintering at 1620K for 60min resulted in the highest density of compacts with almost no vacant pores. The formation of a Fe-Cr-B eutectic liquid may have caused the enhancement of densification by the capillary-force effect of the liquid.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 43(2), 241-248, 1996-02-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002011410
  • 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
    3926727
  • 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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