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    Magnetic properties of Ni-Co-Cr-base Elgiloy

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    Ho_1999 (110.5Kb)
    Date
    1999-09-01
    Author
    Ho, J. C.
    Shellock, FG.
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    Citation
    Ho, J., and F. Shellock. 1999. "Magnetic properties of Ni-Co-Cr-base Elgiloy". Journal of Materials Science: Materials in Medicine. 10 (9): 555-560.
    Abstract
    The Ni-Co-Cr-base Elgiloy is one of the commonly used engineering materials. Most applications rely on its high strength, ductility, corrosion resistance and excellent fatigue life over a wide temperature range. However, in the medical application of cerebral aneurysm clips, the alloy is often subjected to strong magnetic fields associated with magnetic resonance imaging (MRI). Its paramagnetic behavior meets MRI safety requirements, but is the source of relatively large artifacts and thus less MRI-compatible for MRI procedure involving the brain. This article reports superconducting quantum interference device (SQUID) measurements on the magnetic properties of a series of Elgiloy wires in either as-drawn or heat-treated conditions. Furthermore, low-temperature calorimetry was employed to reveal the existence of submicroscopic clusters containing ferromagnetic elements such as Ni or Co in the macroscopically paramagnetic matrix.
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    URI
    http://hdl.handle.net/10057/4450
    http://dx.doi.org/10.1023/A:1008920415237
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