Alloy for medical use, and method for producing same

The present invention provides an alloy for medical use including an Au-Pt alloy, in which the Au-Pt alloy has a Pt concentration of 24 mass % or more and less than 34 mass % with the balance being Au, and has at least a material structure in which a Pt-rich phase having a Pt concentration higher th...

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Bibliographic Details
Main Authors Masahiro, Yasushi, Nakai, Ryusuke, Kodama, Tomonobu, Shima, Kunihiro, Ueno, Asaka, Goto, Kenji, Iwata, Hiroo
Format Patent
LanguageEnglish
Published 05.01.2021
Subjects
ALLOYS
CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:The present invention provides an alloy for medical use including an Au-Pt alloy, in which the Au-Pt alloy has a Pt concentration of 24 mass % or more and less than 34 mass % with the balance being Au, and has at least a material structure in which a Pt-rich phase having a Pt concentration higher than that of an α-phase is distributed in an α-phase matrix, the Pt-rich phase has a Pt concentration that is 1.2 to 3.8 times the Pt concentration of the α-phase, and the Pt-rich phase has an area ratio of 1 to 22% in any cross-section. This alloy is an artifact-free alloy material that exhibits excellent compatibility with a magnetic field environment such as an MRI and has magnetic susceptibility of ±4 ppm with respect to magnetic susceptibility of water.
Bibliography:Application Number: US201415106508