Improvement of High-temperature Creep Resistance in Polycrystalline Al_2O_3 by Cations Co-doping

この論文にアクセスする

この論文をさがす

著者

抄録

High-temperature creep resistance in cations co-doped polycrystalline Al<SUB>2</SUB>O<SUB>3</SUB> was examined by uniaxial compression creep test at 1250°C. The dopant oxides used in this study were 0.1 mol% of YO<SUB>1.5</SUB>, ZrO<SUB>2</SUB>, SrO, MgO and TiO<SUB>2</SUB>. The creep rate in Al<SUB>2</SUB>O<SUB>3</SUB> was significantly changed by cations co-doping. For instance, Zr/Y co-doping suppressed the creep rate in Al<SUB>2</SUB>O<SUB>3</SUB> by a factor of about 400. A high-resolution transmission electron microscopy (HREM) and nano-probe energy dispersive X-ray spectroscopy (EDS) analysis revealed that Y and Zr cations segregate along grain boundaries. The grain boundary diffusion in Al<SUB>2</SUB>O<SUB>3</SUB> was supposed to be retarded by the segregation of Y and Zr cations. A first-principle molecular orbital calculation was made for cations co-doped Al<SUB>2</SUB>O<SUB>3</SUB> and cation singly doped Al<SUB>2</SUB>O<SUB>3</SUB> model cluster. The creep rate was correlated with the value of net charge in oxygen anion. The net charge of oxygen anion was one of the most important factors to determine the creep resistance in Al<SUB>2</SUB>O<SUB>3</SUB>.

収録刊行物

  • Materials transactions

    Materials transactions 45(7), 2078-2082, 2004-07-20

    公益社団法人 日本金属学会

参考文献:  23件中 1-23件 を表示

  • <no title>

    LATIGUE S.

    J. Phys. Cl. 51, 985-990, 1990

    被引用文献1件

  • <no title>

    ADACHI H.

    J. Phys. Soc. Jpn. 45, 875-883, 1978

    被引用文献26件

  • <no title>

    PALADINO A. E.

    J. Am. Ceram. Soc. 46, 133-136, 1963

    被引用文献4件

  • <no title>

    HEUER A. H.

    Ultrafine-grain ceramics. Syracuse, NY, 339-365, 1970

    被引用文献1件

  • <no title>

    FROST H. J.

    Deformation-mechanism maps. Oxford, 1982

    被引用文献1件

  • <no title>

    MUKHERJEE A. K.

    Mater. Sci. Eng. 8, 83-89, 1971

    被引用文献8件

  • <no title>

    ARIELI A.

    Mater. Sci. Eng. 45, 61-70, 1980

    被引用文献2件

  • <no title>

    YOSHIDA H.

    Phil. Mag. Lett. 76, 9-14, 1997

    被引用文献9件

  • <no title>

    CHO J.

    J. Am. Ceram. Soc. 80, 1013-1017, 1997

    被引用文献9件

  • <no title>

    YOSHIDA H.

    J. Mater. Res. 13, 2597-2601, 1998

    被引用文献12件

  • <no title>

    YOSHIDA H.

    Acta Mater. 50, 2955-2966, 2002

    DOI 被引用文献12件

  • <no title>

    ROBERTSON A. G.

    J. Am Ceram. Soc. 74-5, 915-921, 1991

    被引用文献5件

  • <no title>

    LI Y.-Z.

    J. Am. Ceram. Soc. 82, 1497-1504, 1999

    被引用文献2件

  • <no title>

    LANGDON T. G.

    J. Mater. Sci. 13, 473-482, 1978

    被引用文献3件

  • <no title>

    HEUER A. H.

    J. Am. Ceram. Soc. 63, 53-58, 1980

    被引用文献8件

  • <no title>

    CHOKSHI A. H.

    J. Mater. Sci. 21, 705-710, 1986

    被引用文献5件

  • <no title>

    CHOKSHI A. H.

    Mater. Sci. and Tech. 7, 577-584, 1991

    被引用文献4件

  • <no title>

    CHOKSHI A. H.

    J. Mater. Sci. 25, 3221-3228, 1990

    被引用文献4件

  • <no title>

    GIFKINS R. C.

    Met. Trans. 7A, 1225-1232, 1976

    被引用文献17件

  • <no title>

    LANGDON T. G.

    Philos. Mag. 22, 689-700, 1970

    DOI 被引用文献3件

  • <no title>

    R. D. Shannon

    Acta Cryst A32, 751, 1976

    DOI 被引用文献254件

  • <no title>

    CANNON R. M.

    J. Am. Ceram. Soc. 63(1,2), 46-53, 1980

    被引用文献15件

  • <no title>

    RUANO O. A.

    Acta Mater. 51, 3617-3634, 2003

    DOI 被引用文献7件

被引用文献:  1件中 1-1件 を表示

各種コード

  • NII論文ID(NAID)
    10013336589
  • 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
    7015706
  • 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  CJP引用  NDL  J-STAGE 
ページトップへ