Surface characteristics of oxide films on titanium alloys formed by AC-type microarc oxidation combined with hydrothermal treatment

2013 ◽  
Keyword(s):  
Titanium Alloys ◽  
Hydrothermal Treatment ◽  
Oxide Films ◽  
Microarc Oxidation ◽  
Surface Characteristics

Precipitation of Hydroxyapatite on Oxide Film Containing Ca and P by Hydrothermal Treatment

2007 ◽  
Vol 280-283 ◽  
pp. 1537-1540
Author(s):  
Fu Liu ◽  
Fu Ping Wang ◽  
Tadao Shimizu ◽  
K. Igarashi ◽  
Lian Cheng Zhao
Keyword(s):  
Oxide Film ◽  
Hydrothermal Treatment ◽  
Oxide Films ◽  
Microarc Oxidation ◽  
X Ray Diffraction ◽  
X Ray ◽  
Electron Probe Micro Analyzer ◽  
Scanning Electron Microcopy ◽  
Before And After ◽  
Hydroxyapatite Crystals

An oxide film containing Ca and P was obtained in an electrolyte containing calcium glycerphosphate (Ca-GP) and calcium acetate (CA) by microarc oxidation. The surfaces of the oxide films were porous and rough, and the Ca/P ratio in the oxide film was 1.71 when the oxide film was formed in the electrolyte containing 0.06 M Ca-GP and 0.25 M CA at current density 50 A/m2 and final voltage 350 V. The oxide film with Ca/P ration 1.71 was treated hydrothermally at 190°C for 10 hours in an autoclave. It was found that hydroxyapatite crystals were precipitated on the oxide film after hydrothermal treatment. The oxide films were investigated by means of electron probe micro analyzer, X-ray diffraction, scanning electron microcopy before and after hydrothermal treatment.

Burr Formation and Surface Characteristics in Micro-End Milling of Titanium Alloys

2009 ◽  
pp. 129-138 ◽  
Author(s):  
G.M. Schueler ◽  
J. Engmann ◽  
T. Marx ◽  
R. Haberland ◽  
J.C. Aurich
Keyword(s):  
Titanium Alloys ◽  
End Milling ◽  
Surface Characteristics ◽  
Burr Formation ◽  
Micro End Milling

Effect of Different Solutions on Hydrothermal Treatment of β-Tricalcium Phosphate Scaffold

2017 ◽  
Vol 264 ◽  
pp. 66-69
Author(s):  
Fadilah Darus ◽  
Mariatti Jaafar
Keyword(s):  
Hydrothermal Treatment ◽  
Sodium Hydrogen Carbonate ◽  
Surface Characteristics ◽  
Carbonate Apatite ◽  
X Ray Diffraction ◽  
Xrd Pattern ◽  
X Ray ◽  
Sodium Hydrogen ◽  
Hydrogen Carbonate ◽  
Before And After

Carbonate apatite would be ideal for bone substitute due to its composition of 4-8% carbonate similar to bone mineral. The purpose of the present study was to produce carbonate apatite scaffold by using hydrothermal treatment of β-TCP scaffold as a precursor. The effect of different solutions on hydrothermal treatment was studied. The microstructure of scaffold before and after hydrothermal were characterized by scanning electron microscopy (SEM). It is observed that surface characteristics are governed by the types of immersion solution. The typical smooth surface of the β-TCP scaffold was observed before hydrothermal. Different morphology was observed after hydrothermal in different solutions. X-Ray Diffraction (XRD) pattern indicates that the peak of apatite with low intensities present after hydrothermal treatment in sodium hydrogen carbonate solution.

Anticorrosion, Antiscale Coatings Obtained on the Surface of Titanium Alloys by Microarc Oxidation Method and Used in Seawater

CORROSION ◽  
2000 ◽  
Vol 56 (1) ◽  
pp. 24-31 ◽  
Author(s):  
S. V. Gnedenkov ◽  
P. S. Gordienko ◽  
S. L. Sinebrukhov ◽  
O. A. Khrisanphova ◽  
T. M. Skorobogatova
Keyword(s):  
Titanium Alloys ◽  
Microarc Oxidation ◽  
Oxidation Method
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