Fe-Cr-Al type implant alloy composite for medical treatment
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United States of America Patent
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May 26, 1987
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N/A
app pub date -
Jun 5, 1985
filing date -
Jun 8, 1984
priority date (Note) -
Expired
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Abstract
An Fe-Cr-Al type implant alloy for medical treatment wherein the alloy consists essentially of, by weight, 20-32 % chromium, 0.5-5.0% aluminum, 0.5-4.0% molybdenum, 0.05-0.5% M (wherein M represents at least one kind selected from zirconium and hafnium), and the remainder being substantially iron, wherein the alloy includes an oxide film on the surface, the film being composed substantially of .alpha.-Al.sub.2 O.sub.3, and a method of making the alloy implant.
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