Effect of Substrate Temperature on Properties of Nano-Scale Functionally Graded Calcium Phosphate Coatings

2006 ◽  
Author(s):  
Travis Blalock ◽  
Xiao Bai ◽  
Afsaneh Rabiei
Keyword(s):  
Electron Microscopy ◽  
Calcium Phosphate ◽  
Substrate Temperature ◽  
Ion Beam ◽  
Processing Parameters ◽  
Functionally Graded ◽  
Cross Sectional ◽  
X Ray ◽  
Phosphate Coatings ◽  
Calcium Phosphate Coatings

The effect of substrate temperature and processing parameters on microstructure and crystallinity of calcium phosphate coatings deposited on heated substrates in an Ion Beam Assisted Deposition (IBAD) system are being studied. The experimental procedures include mechanical testing and film thickness measurements using bonding strength and profilometery. Cross-sectional scanning transmission electron microscopy (STEM) with energy dispersive X-ray spectroscopy (EDX) through the thickness of the film as well as scanning electron microscopy (SEM) with EDX at the top surface of the film was performed to evaluate the microstructure of the film. The coating crystallinity was studied through X-ray diffraction (XRD). The information gained from current analysis on the set temperature coatings will be used to refine the processing techniques of the Functionally Graded Hydroxyapatite (FGHA) coating.

scholarly journals Morphological, Chemical, and Biological Investigation of Ionic Substituted, Pulse Current Deposited Calcium Phosphate Coatings

Materials ◽  
2020 ◽  
Vol 13 (20) ◽  
pp. 4690
Author(s):  
Monika Furko ◽  
Csaba Balázsi
Keyword(s):  
Electron Microscopy ◽  
Calcium Phosphate ◽  
Pulse Current ◽  
Physiological Solution ◽  
Elemental Distribution ◽  
Biological Investigation ◽  
X Ray ◽  
Phosphate Coatings ◽  
Potentiodynamic Curves ◽  
Calcium Phosphate Coatings

Ionic substituted calcium phosphate coatings (iCP) have been prepared by the electrochemical pulse current deposition technique with an alternate pulse on and off time of 5 ms onto a titanium alloy substrate. The elemental distribution and morphology of the deposited layers have been extensively studied by scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), and transmission electron microscopy (TEM). The crystallinity and phase structure of iCPs have been investigated by X-ray diffraction (XRD). The corrosion characteristics and biodegradability of coatings have been determined by electrochemical measurements, recording potentiodynamic curves in a physiological solution over a long-term immersion period. The cell viability tests confirmed that the iCP coating was biocompatible, while the corrosion tests proved its biodegradable characteristic. In our paper, we compare the morphological, chemical, and biological characteristics of silver and zinc substituted calcium phosphate layers deposited by the electrochemical method.

Functionally graded calcium phosphate coatings produced by ion beam sputtering/mixing deposition

Biomaterials ◽  
2001 ◽  
Vol 22 (12) ◽  
pp. 1619-1626 ◽  
Author(s):  
C.X Wang ◽  
Z.Q Chen ◽  
M Wang ◽  
Z.Y Liu ◽  
P.L Wang ◽  
...  
Keyword(s):  
Calcium Phosphate ◽  
Ion Beam ◽  
Functionally Graded ◽  
Ion Beam Sputtering ◽  
Phosphate Coatings ◽  
Beam Sputtering ◽  
Calcium Phosphate Coatings

X-ray Photoelectron Spectroscopy Characterization of Ion-Beam Sputter-Deposited Calcium Phosphate Coatings

1991 ◽  
Vol 74 (9) ◽  
pp. 2301-2304 ◽  
Author(s):  
Joo L. Ong ◽  
Larry A. Harris ◽  
Linda C. Lucas ◽  
William R. Lacefield ◽  
Douglas Rigney
Keyword(s):  
Calcium Phosphate ◽  
Photoelectron Spectroscopy ◽  
Ion Beam ◽  
X Ray ◽  
Phosphate Coatings ◽  
Sputter Deposited ◽  
Calcium Phosphate Coatings

The Role of Processing Parameters on Calcium Phosphate Coatings Obtained by Laser Cladding

2003 ◽  
Vol 254-256 ◽  
pp. 371-374
Author(s):  
F. Lusquiños ◽  
Juan Pou ◽  
J.L. Arias ◽  
M. Boutinguiza ◽  
Betty León ◽  
...  
Keyword(s):  
Calcium Phosphate ◽  
Laser Cladding ◽  
Processing Parameters ◽  
Phosphate Coatings ◽  
Calcium Phosphate Coatings

Deposition and investigation of functionally graded calcium phosphate coatings on titanium

2009 ◽  
Vol 5 (9) ◽  
pp. 3563-3572 ◽  
Author(s):  
Xiao Bai ◽  
Stefan Sandukas ◽  
Mark R. Appleford ◽  
Joo L. Ong ◽  
Afsaneh Rabiei
Keyword(s):  
Calcium Phosphate ◽  
Functionally Graded ◽  
Phosphate Coatings ◽  
Calcium Phosphate Coatings

Osseointegration of Calcium Phosphate Nanofilms on Titanium Alloy Implants

2007 ◽  
Vol 361-363 ◽  
pp. 645-648
Author(s):  
M.D. Paz ◽  
Stefano Chiussi ◽  
Pio González ◽  
Julia Serra ◽  
Betty León ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Titanium Alloy ◽  
Calcium Phosphate ◽  
Bone Regeneration ◽  
Bone Growth ◽  
Pulsed Laser ◽  
Titanium Implants ◽  
Optical Methods ◽  
Phosphate Coatings ◽  
Calcium Phosphate Coatings

In the present work two different hydroxyapatite nanofilms (50 and 100 nm thick) have been successfully deposited on titanium implants that were previously laser macrostructured in order to assess the influence of the thickness of nanometric calcium phosphate coatings on the osseointegration. Cylindrical implants were tested in a sheep tibia model together with titanium alloy controls achieving very good osseointegration results. Laser macrostructured titanium alloy implants have shown improved bone regeneration when coated with nanometric films of carbonated HA. The pulsed laser deposited nanofilm has promoted bone in-growth deep into the laser ablated craters. There were no significant differences between the two coating thicknesses, neither when assessed with electron microscopy or classical optical methods. This result suggests that the 50 nm coating is as effective as the 100 nm one, therefore implying that the thickness limit for such a bioactive layer to stimulate bone growth may be even further below.

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