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Enhanced research of nanotubular‐structured Ti‐35Nb‐xZr alloys for biomaterials using STEM
Author(s) -
Jeong Y. H.,
Brantley W. A.,
Choe H. C.
Publication year - 2012
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.4976
Subject(s) - materials science , equiaxed crystals , transmission electron microscopy , anodizing , amorphous solid , nanotechnology , tetragonal crystal system , scanning electron microscope , chemical engineering , composite material , alloy , crystallography , crystal structure , chemistry , aluminium , engineering
Previous research on nanotubular‐structured Ti‐35Nb‐xZr alloys for biomaterials have employed a variety of experimental methods. The present research was focused on clarifying the morphologies of these nanotubes that form on electrochemically oxidized (anodized) Ti‐35Nb‐xZr alloys by using the scanning transmission electron microscope. The Ti‐35Nb‐xZr alloys exhibited an equiaxed structure with β′ (body‐centered tetragonal) and β (body‐centered cubic) phases. The nanotubes formed on the oxidized alloys at two different scales having large and small diameters. The large nanotubes ranged in diameter from approximately 200 to 250 nm, and the small nanotubes ranged in diameter from approximately 60 nm to 100 nm. The wall thickness of the large nanotubes increased from approximately 40 nm to 60 nm with increase in Zr content. Selected‐area diffraction patterns showed that the nanotubes were in an amorphous state in the absence of subsequent elevated‐temperature heat treatment of the Ti‐35Nb‐xZr alloys. Copyright © 2012 John Wiley & Sons, Ltd.