TY - JOUR
T1 - Porous cap coatings formed by combination of plasma electrolytic oxidation and rf-magnetron sputtering
AU - Kozelskaya, Anna
AU - Dubinenko, Gleb
AU - Vorobyev, Alexandr
AU - Fedotkin, Alexander
AU - Korotchenko, Natalia
AU - Gigilev, Alexander
AU - Shesterikov, Evgeniy
AU - Zhukov, Yuriy
AU - Tverdokhlebov, Sergei
N1 - Funding Information:
Funding: This work was supported by the Tomsk Polytechnic University Competitiveness Enhancement Program project VIU-School of Nuclear Science and Engineering-204/2019 and project VIU-SEC B.P. Veinberg-196/2020.
Publisher Copyright:
© 2020 by the authors. Licensee MDPI, Basel, Switzerland.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/11
Y1 - 2020/11
N2 - The porous CaP subcoating was formed on the Ti6Al4V titanium alloy substrate by plasma electrolytic oxidation (PEO). Then, upper coatings were formed by radio frequency magnetron sputtering (RFMS) over the PEO subcoating by the sputtering of various CaP powder targets: β-tricalcium phosphate (β-TCP), hydroxyapatite (HA), Mg-substituted β-tricalcium phosphate (Mg-β-TCP) and Mg-substituted hydroxyapatite (Mg-HA), Sr-substituted β-tricalcium phosphate (Sr-β-TCP) and Sr-substituted hydroxyapatite (Sr-HA). The coating surface morphology was studied by scanning electron and atomic force microscopy. The chemical composition was determined by X-ray photoelectron spectroscopy. The phase composition of the coatings was studied by X-ray diffraction analysis. The Young’s modulus of the coatings was studied by nanoindentation test. RF-magnetron sputtering treatment of PEO subcoating resulted in multileveled roughness, increased Ca/P ratio and Young’s modulus and enrichment with Sr and Mg. Sputtering of the upper layer also helped to adjust the coating crystallinity.
AB - The porous CaP subcoating was formed on the Ti6Al4V titanium alloy substrate by plasma electrolytic oxidation (PEO). Then, upper coatings were formed by radio frequency magnetron sputtering (RFMS) over the PEO subcoating by the sputtering of various CaP powder targets: β-tricalcium phosphate (β-TCP), hydroxyapatite (HA), Mg-substituted β-tricalcium phosphate (Mg-β-TCP) and Mg-substituted hydroxyapatite (Mg-HA), Sr-substituted β-tricalcium phosphate (Sr-β-TCP) and Sr-substituted hydroxyapatite (Sr-HA). The coating surface morphology was studied by scanning electron and atomic force microscopy. The chemical composition was determined by X-ray photoelectron spectroscopy. The phase composition of the coatings was studied by X-ray diffraction analysis. The Young’s modulus of the coatings was studied by nanoindentation test. RF-magnetron sputtering treatment of PEO subcoating resulted in multileveled roughness, increased Ca/P ratio and Young’s modulus and enrichment with Sr and Mg. Sputtering of the upper layer also helped to adjust the coating crystallinity.
KW - Calcium-phosphate (CaP) coating
KW - Plasma electrolytic oxidation (PEO)
KW - Radio frequency magnetron sputtering (RFMS)
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U2 - 10.3390/coatings10111113
DO - 10.3390/coatings10111113
M3 - Article
AN - SCOPUS:85096340155
VL - 10
SP - 1
EP - 11
JO - Coatings
JF - Coatings
SN - 2079-6412
IS - 11
M1 - 1113
ER -