Characteristics of Anodized Layer in Investment Cast Ni50Ti50 Shape Memory Alloy

NiTi shape memory alloys are promising implant materials due to their shape memory effect and super elasticity. In the current study, some Ni50Ti50 (mass %) SMAs samples were prepared by investment casting. These samples were then anodized and thermally treated to improve the surface properties. A f...

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Bibliographic Details
Published in:Journal of metallurgy 2014-01, Vol.2014, p.1-6
Main Authors: El-Hadad, Shimaa H., Ibrahim, Khaled M., Wagner, Lothar
Format: Article
Language:English
Subjects:
Alloys
Anodizing
Biocompatibility
Corrosion tests
Electrodes
High temperature
Intermetallic compounds
Intermetallics
Metallurgy
Nickel
Nickel base alloys
Nickel titanides
Shape memory alloys
Studies
Thin films
Titanium compounds
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Summary:NiTi shape memory alloys are promising implant materials due to their shape memory effect and super elasticity. In the current study, some Ni50Ti50 (mass %) SMAs samples were prepared by investment casting. These samples were then anodized and thermally treated to improve the surface properties. A fully saturated oxide layer was obtained. The structure and hardness properties of the anodized surfaces were then investigated. A hard porous layer with no free Ni atoms could be obtained which can be used as prebiomimetic surface for biological application.
ISSN:1687-9465
1687-9473
DOI:10.1155/2014/346328