Surface Modification of Titanium Implant by Anodic Oxidation Treatment and Bisphosphate Immobilization

2014 ◽  
Vol 887-888 ◽  
pp. 766-769 ◽  
Author(s):  
Huey Ling Chang ◽  
Chih Ming Chen ◽  
Chin Huang Sun ◽  
Jin Shyong Lin

This study produced a regularly arranged membrane, called anodic aluminum oxide (referred AAO), by mean of anodic oxidation treatment. The structure of AAO can be molecular self-assembly and its pore size is consistent. Also, the manufacturing process cost is low. These properties make the AAO be a nanotemplate material. This study further created a high quality of nanostructured film by electrochemical mould with the design of electrolyzer. In addition, a uniform nanothin film was grown on the aluminum surface in the stable control of current and temperature according to the conditions of different anode treatment. This film can form a nanopore array which the diameter can be controlled the size ranging from 15 nm to 400 nm. As results, the study can produce nanoporous template for various aperture by mean of anodic oxidation.


2005 ◽  
Vol 24 (4) ◽  
pp. 536-540 ◽  
Author(s):  
Yasuhiko ABE ◽  
Kyou HIASA ◽  
Maho TAKEUCHI ◽  
Yasuhiro YOSHIDA ◽  
Kazuomi SUZUKI ◽  
...  

Author(s):  
Bang Cheng Yang ◽  
L. Gan ◽  
Zhen Sheng Li ◽  
Y. Huang ◽  
Yang Qu ◽  
...  

2020 ◽  
Vol 20 (9) ◽  
pp. 5625-5628
Author(s):  
Seungyun Lee ◽  
Doyun Lee ◽  
Kyungmin Lee ◽  
Chan Park ◽  
Hyunphil Lim ◽  
...  

Magnesium alloys as biodegradable materials have been examined that may replace bone screws and plates in recent studies. But the velocity control of magnesium alloy is very difficult. Until now, the magnesium alloys degrade very fast, thus it couldn’t maintain the function in clinical field. Thus the purpose of this study is to evaluate the degradability of anodized magnesium alloy for control the velocity. For this experiment, a Mg–xMn (x = 0, 0.5, 1 wt%) binary alloy was cast in argon gas (99.99%) atmosphere. The specimens of the surface treatment group were anodized for 15 minutes at a voltage of 120 V at room temperature using calcium gluconate, sodium hexametaphosphate, and sodium hydroxide electrolyte. For the mechanical test, SEM, roughness test, hardness test were examined. The degradation test was conducted to measure the hydrogen gas formation volume. For biologic test, cell viability were tested. After anodic oxidation treatment, the surface showed the crater formation, the size of craters were about 200~300 nm. Among nonanodized group, the Mg–0.5Mn showed the highest Vickers hardness and cell viability. However for biodegradability test, Mg–1Mn showed the lowest the hydrogen gas formation. For anodic oxidation treatment, anodic oxidation treatment makes rougher surface, higher hardness, good cell response and lower degradation rate. Overall, anodized Mg–1Mn showed the possibility for clinical application in bone screw and bone plate.


2017 ◽  
Vol 742 ◽  
pp. 440-446
Author(s):  
Judith Moosburger-Will ◽  
Matthias Bauer ◽  
Fabian Schubert ◽  
Omar Cheick Jumaa ◽  
Siegfried R. Horn

We investigate the effects of static and dynamic anodic oxidation treatment on the surface chemical composition and functionality of carbon fibers. During static treatment, the electrolytic surface oxidation process is performed on a spatially fixed carbon fiber bundle, while in the dynamic process a moving, continuous carbon fiber tow is oxidized. In both treatment modes electrolytic current density and treatment time were varied. Surface chemical composition and functionality of the resulting carbon fibers were analyzed by x-ray photoelectron spectroscopy. A good agreement between the chemical composition and the functionality of fibers from static and dynamic anodic oxidation treatment is found. This suggests that results from static fiber treatment in a variable, easy to handle laboratory setup can be applied to dynamic anodic oxidation process conditions on a large scale.


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