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  • 1
    ISSN: 0021-9304
    Keywords: magnetic behavior ; ferritic superalloy ; alumina coatings ; thermal oxidation treatment ; surgical implants ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: MA 956 superalloy is a ferritic stainless material which develops a fine, dense, and well-adhered α-alumina layer upon heat treatment at elevated temperatures. This unique capability makes MA 956 attractive for surgical implants. In this work, the magnetic behavior of the material before and after thermal oxidation treatment required to develop the alumina layer is investigated. The thermal oxidation treatment yields a microstructure of elongated grains and a significant change in the texture. Despite these strong microstructural differences between the as-received and heat-treated materials, the hysteretic behavior is not greatly affected by them. MA 956 is a soft magnetic material irrespective of the material condition. The coercitive force and residual magnetization of the material are somewhat lower under heat-treated conditions than in the as-received condition. © 1997 John Wiley & Sons, Inc. J Biomed Mater Res, 37, 453-456, 1997.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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