New Ce-Cu-Al-Zn Bulk Metallic Glasses with High Oxidation Resistance

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We reported the effect of Zn addition on the glass formation ability (GFA), thermal stability, melting behavior and oxidation behavior of Ce-based bulk metallic glasses (BMGs). The Ce-Cu-Al alloys with Zn addition also have high glass formation ability (GFA) and large supercooled liquid regions (Δ<I>T<SUB>x</SUB></I>, Δ<I>T<SUB>x</SUB></I>=<I>T<SUB>x</SUB></I>−<I>T<SUB>g</SUB></I>, <I>T<SUB>x</SUB></I> is the onset crystallization temperature and <I>T<SUB>g</SUB></I> is the glass transition temperature). The <I>T<SUB>g</SUB></I>, <I>T<SUB>x</SUB></I> and Δ<I>T<SUB>x</SUB></I> are, respectively, 368, 437 and 69 K for the (Ce<SUB>0.72</SUB>Cu<SUB>0.28</SUB>)<SUB>87.5</SUB>Al<SUB>10</SUB>Zn<SUB>2.5</SUB> alloy, and 394, 467 and 73 K for the (Ce<SUB>0.72</SUB>Cu<SUB>0.28</SUB>)<SUB>82.5</SUB>Al<SUB>10</SUB>Zn<SUB>7.5</SUB> alloy. The Δ<I>T<SUB>x</SUB></I> of the (Ce<SUB>0.72</SUB>Cu<SUB>0.28</SUB>)<SUB>100−x</SUB>Al<SUB>10</SUB>Zn<SUB>x</SUB> alloys was above 70 K and the BMGs with diameters up to ∼6 mm could be produced successfully. The critical diameters and Δ<I>T<SUB>x</SUB></I> of the alloys increase with increasing Zn content, and have maximum values of 6 mm and 73 K, respectively, at 7.5 at% Zn, and then decreases in the higher Zn content range. The melting behavior shows that the addition of Zn element causes the significant increase of both <I>T<SUB>m</SUB></I> and <I>T<SUB>l</SUB></I>. The investigation of oxidation behavior shows that the addition of Zn element is effective for the enhancement of the oxidation resistance.

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  • Materials transactions  

    Materials transactions 47(10), 2599-2602, 2006-10-20 

    The Japan Institute of Metals and Materials

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各種コード

  • NII論文ID(NAID)
    10018310563
  • NII書誌ID(NCID)
    AA1151294X
  • 本文言語コード
    ENG
  • 資料種別
    SHO
  • ISSN
    13459678
  • NDL 記事登録ID
    8092447
  • 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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