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Crevice corrosion in orthopedic implant metals

✍ Scribed by Levine, D. L. ;Staehle, R. W.

Publisher
John Wiley and Sons
Year
1977
Tongue
English
Weight
310 KB
Volume
11
Category
Article
ISSN
0021-9304

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✦ Synopsis

Abstract

Studies of orthopedic implant alloys in crevice configuration suggest that cobalt‐chromium alloys such as Haynes‐Stellite 25 are the best choice for multicomponent implants. It is also shown that severe crevice attack may result from use of mixed metals.

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The concept of protection potential appl
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## Abstract Cyclic polarization curves obtained for a cobalt‐base casting alloy (similar to Vitallium Surgical Alloy) and for 316L stainless steel show that the cobalt‐base alloy exhibits a high (noble) protection potential whereas the stainless steel exhibits a low (active) protection potential. I

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Orthopedic appliances of type 316 (SMO) stainless steel were examined in detail after being removed from human subjects. Techniques included conventional microscopy with various lighting methods, together with electron microscope fractography. Corrosion, fatigue failure, and manufacturing defects we