Structure of Multi-Layers Deposited on NiTi Shape Memory Alloy

Abstract:

In order to improve a biocompatibility of a NiTi shape memory alloys used as a long-term implant, surface was covered by protective multi-layers coating. First, alloy was passivated in autoclave, and then hydroxyapatite was deposited using electrophoresis at room temperature. In result of that multi-layer was formed on the top of the surface consisted of titanium oxide and hydroxyapatite. Phase identification done with use of grazing incidence beam X-ray diffraction proved sequence of obtained coatings. Applied procedure for multi-layer deposition allowed avoiding of the B2 parent phase decomposition. Moreover, the martensitic transformation occurs in two-steps.

• Periodical: Solid State Phenomena (Volumes 203-204)
• Pages: 90-93
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.203-204.90
• Online since: June 2013
• Authors: Karolina Dudek, Barbara Szaraniec, Józef Lelątko, Tomasz Goryczka
• Keywords: Hydroxyapatite (HAP), Multilayer, NiTi, Shape Memory Alloy (SMA), Structure, Titanium Oxide

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