STRUCTURE AND HARD MAGNETIC PROPERTIES OF RAPIDLY QUENCHED Sm-Co ALLOY RIBBONS.

Migaku Takahashi, Hitoshi Saito, Keiichi Takakura, Terunobeu Miyazaki, Tokuo Wakiyama, Minoru Takahashi

    Research output: Contribution to journalArticlepeer-review

    6 Citations (Scopus)

    Abstract

    Structure analysis by X-ray diffraction and precise metallographic observations by SEM (scanning electron microscopy) were made for rapidly quenched Sm-Co alloy ribbons. The high-temperature phase of Sm//2Co//1//7 compound was found in the composition range between 10 and 16 at% Sm. The SmCo//5 phase was found in the Sm concentration above 16 at% Sm. According to observation results on the metallographic structure, the columnar structure in which c-axis was aligned parallel to the ejected direction of the ribbons was present in the ribbons fabricated at a relatively low roll velocity. In ribbons fabricated at higher roll velocities the columnar structure was absent, and only homogeneous spherical fine particles with random orientation of c-axis were present. The origin of the change in the coercive force and the residual magnetization M//r with the roll velocity was discussed in connection with the change in the metallographic structure of the ribbons.

    Original languageEnglish
    Pages (from-to)177-186
    Number of pages10
    JournalNippon Kinzoku Gakkai-si
    Volume49
    Issue number3
    DOIs
    Publication statusPublished - 1985

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Mechanics of Materials
    • Metals and Alloys
    • Materials Chemistry

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