A theoretical study of physicochemical processes occurring in an electrolytic bath during the deposition of calcium phosphate coatings by microarc oxidation

2008 ◽  
Vol 2 (5) ◽  
pp. 732-739 ◽  
Author(s):  
N. N. Nazarenko ◽  
A. G. Knyazeva
Keyword(s):  
Calcium Phosphate ◽  
Theoretical Study ◽  
Microarc Oxidation ◽  
Electrolytic Bath ◽  
Physicochemical Processes ◽  
Phosphate Coatings ◽  
Calcium Phosphate Coatings

Lanthanum- and silicon-incorporated calcium phosphate coatings formed by microarc oxidation

2017 ◽  
Author(s):  
E. G. Komarova ◽  
M. B. Sedelnikova ◽  
Y. P. Sharkeev ◽  
M. V. Chaikina ◽  
E. A. Kazanceva
Keyword(s):  
Calcium Phosphate ◽  
Microarc Oxidation ◽  
Phosphate Coatings ◽  
Calcium Phosphate Coatings

Effect of boehmite nanoparticles on the structural, corrosion and diffusion properties of microarc biocoatings

2020 ◽  
pp. 19-30
Author(s):  
V.V. Chebodaeva ◽  
◽  
N.N. Nazarenko ◽  
M.B. Sedelnikova ◽  
S.B. Gnedenkov ◽  
...  
Keyword(s):  
Calcium Phosphate ◽  
Biological Fluid ◽  
Effective Diffusion ◽  
Microarc Oxidation ◽  
Surface Layers ◽  
Phosphate Coatings ◽  
Boehmite Nanoparticles ◽  
Calcium Phosphate Coatings ◽  
And Diffusion ◽  
Diffusion Properties

The results of the morphology, porous structure, the corrosion and diffusion properties study of boehmite-containing calcium phosphate coatings formed by microarc oxidation on titanium substrates are presented. Boehmite nanoparticles obtained as a result of AlN hydrolysis were deposited on the surface of microarc coatings with a developed relief. With an increase in the duration of preliminary ultrasonic treatment (UST) of a suspension with AlN in the range of 20-60 min, the size of agglomerates of boehmite nanoparticles on the coating surface decreases from 200 to 40 μm. The surface porosity of the modified coatings and the area occupied by boehmite particles decrease from 36 to 33% and from 27 to 10% respectively. Agglomerates with boehmite nanoparticles after 60 min of UST of suspensions with AlN powder are distributed more uniformly in the coating than after 20 min of treatment. With an increase in the UST duration of the initial suspensions, the effective diffusion coefficients of the model biological fluid in porous coatings decrease from 7.98·10–11 to 7.25·10–11 m2/s. Modification of calcium phosphate coatings with boehmite nanoparticles with varying the duration of the UST of AlN powder increases the corrosion resistance of the surface layers.

Wollastonite and Calcium Phosphate Biocoatings with Zn- and Cu-Incorporation Produced by a Microarc Oxidation Method

2016 ◽  
Vol 695 ◽  
pp. 144-151 ◽  
Author(s):  
Maria B. Sedelnikova ◽  
Ekaterina G. Komarova ◽  
Yurii Sharkeev
Keyword(s):  
Calcium Phosphate ◽  
Microarc Oxidation ◽  
Amorphous Structure ◽  
Strength Properties ◽  
Oxidation Method ◽  
Phosphate Coatings ◽  
Structure Thickness ◽  
Calcium Phosphate Coatings ◽  
Oxidation Parameters ◽  
Maximum Content

Investigations of wollastonite and calcium phosphate biocoatings with Zn-and Cu-incorporation produced by a microarc oxidation method were presented. Dependences of coating properties on the microarc oxidation parameters were revealed. A variation of the process parameters allowed us to produce wollastonite-calcium phosphate coatings with a plate-like structure, thickness of 25–30 μm, roughness of 2.5–5.0 μm, and enhanced strength properties. Coatings based on substituted hydroxyapatite deposited under voltages of 200–250 V have an X-ray amorphous structure. An increase of oxidation voltage to 300 V leads to the formation of crystalline phases in the coating, such as CaHPO4 and β-Ca2P2O7. The maximum content of 0.4 at% zinc and 0.1 at% copper was obtained for coatings based on Zn-and Cu-substituted hydroxyapatites, consequently, deposited under oxidation voltage of 250 V.

Principal Physics of Oblique Sputtering of Calcium Phosphate Coatings Using RF-Magnetron Discharge Plasma

2021 ◽  
Vol 63 (11) ◽  
pp. 1891-1897
Author(s):  
K. A. Prosolov ◽  
O. A. Belyavskaya ◽  
V. V. Lastovka ◽  
M. V. Chaikina ◽  
Yu. P. Sharkeev
Keyword(s):  
Calcium Phosphate ◽  
Discharge Plasma ◽  
Magnetron Discharge ◽  
Phosphate Coatings ◽  
Calcium Phosphate Coatings

scholarly journals Mechanical and biological properties of electrodeposited calcium phosphate coatings

2019 ◽  
Vol 100 ◽  
pp. 475-484 ◽  
Author(s):  
T. Mokabber ◽  
Q. Zhou ◽  
A.I. Vakis ◽  
P. van Rijn ◽  
Y.T. Pei
Keyword(s):  
Calcium Phosphate ◽  
Biological Properties ◽  
Phosphate Coatings ◽  
Calcium Phosphate Coatings

Influence of adding Pluronic F127 in the electrolyte on the morphology, structure and biofilm adhesion of calcium phosphate coatings

2021 ◽  
Vol 56 (14) ◽  
pp. 8427-8438
Author(s):  
Pablo Eduardo Costa dos Santos ◽  
Cristina Ferraz Silva ◽  
Cristiane Xavier Resende ◽  
Zaine Teixeira Camargo
Keyword(s):  
Calcium Phosphate ◽  
Pluronic F127 ◽  
Phosphate Coatings ◽  
Calcium Phosphate Coatings
Sign in / Sign up

Export Citation Format

Share Document