Mechanical grinding and reforming process of the Bi-2201 phase (II) - comparing the various Bi-2201 solid solutions

Toshinobu Niinae, Jun Takada, Yasunori Ikeda, Yoshichika Bando

    Research output: Contribution to journalArticle

    Abstract

    Mechanical grinding and the reformation from ground powder of the '2201' phase doped Pb, Ca and Ba were examined by XRD and DTA. The '2201' solid solutions changes easily into fine powder by mechanical grinding. The Ca- or Ba- substitution for Sr tends to suppress the formation of SrCO3 from the ground powder on mechanical grinding in air. The formation of Bi2CuO4 at 400°C and the reformation of the original '2201' phase at 800°C seem to be common for the '2201' solid solutions. The ground powder consists of not amorphous powder but ultra-fine crystals. Each crystal has a diameter of 30 to 100 angstrom and a thickness of one unit cell or a half unit cell length and thermally unstable.

    Original languageEnglish
    Pages (from-to)1065-1068
    Number of pages4
    JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
    Volume40
    Issue number11
    Publication statusPublished - Nov 1993

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    Reforming reactions
    Powders
    Solid solutions
    Crystals
    Differential thermal analysis
    Substitution reactions
    Air

    ASJC Scopus subject areas

    • Mechanical Engineering
    • Metals and Alloys

    Cite this

    Mechanical grinding and reforming process of the Bi-2201 phase (II) - comparing the various Bi-2201 solid solutions. / Niinae, Toshinobu; Takada, Jun; Ikeda, Yasunori; Bando, Yoshichika.

    In: Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, Vol. 40, No. 11, 11.1993, p. 1065-1068.

    Research output: Contribution to journalArticle

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