TY - JOUR
T1 - Combination of Electron Beam Surface Structuring and Plasma Electrolytic Oxidation for Advanced Surface Modification of Ti6Al4V Alloy
AU - Mora-Sanchez, Hugo
AU - Pixner, Florian
AU - Buzolin, Ricardo
AU - Mohedano, Marta
AU - Arrabal, Raúl
AU - Warchomicka, Fernando
AU - Matykina, Endzhe
N1 - Funding Information:
The authors gratefully acknowledge the support of PID2021-124341OB-C22 (MICINN/AEI/FEDER, UE) and ADITIMAT-CM (S2018/NMT-4411, the Regional Government of Madrid and EU Structural Funds). M.M. is grateful for the support of RYC-2017-21843. H.M.-S. is grateful for the support of PEJD-2019-POST/IND-16119 (the Regional Government of Madrid and EU Structural Funds), FEI-EU-20-05 (UCM) and KMM-VIN for the research fellowship (https://www.kmm-vin.eu/fellowships/) granted to carry out a research stay at the IMAT Institute (TU-Graz, Graz, Austria). R.H.B. acknowledges the Christian Doppler Forschungsgesellschaft; project number: D-1303000107.
Publisher Copyright:
© 2022 by the authors.
PY - 2022/10
Y1 - 2022/10
N2 - The objective of this work is to study for the first time the combination of electron beam (EB) surface structuring and plasma electrolytic oxidation (PEO) with the aim of providing a multiscale topography and bioactive surface to the Ti6Al4V alloy for biomedical applications. Ca and P-containing coatings were produced via 45 s PEO treatments over multi-scale EB surface topographies. The coatings morphology and composition were characterized by a means of scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). The effect on the previous EB topography was evaluated by means of a 3D optical profilometry and electrochemical response via potentiodynamic polarization tests. In general, the PEO process, morphology, composition and growth rate of the coatings were almost identical, irrespective of the topography treated. Minimal local differences were found in terms of morphology, and the growth rate were related to specific topographical features. Nevertheless, all the PEO-coated substrates presented essentially the same corrosion resistance. Electrochemical tests revealed a localized crevice corrosion susceptibility of all the bare EB topographies, which was successfully prevented after the PEO treatment.
AB - The objective of this work is to study for the first time the combination of electron beam (EB) surface structuring and plasma electrolytic oxidation (PEO) with the aim of providing a multiscale topography and bioactive surface to the Ti6Al4V alloy for biomedical applications. Ca and P-containing coatings were produced via 45 s PEO treatments over multi-scale EB surface topographies. The coatings morphology and composition were characterized by a means of scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). The effect on the previous EB topography was evaluated by means of a 3D optical profilometry and electrochemical response via potentiodynamic polarization tests. In general, the PEO process, morphology, composition and growth rate of the coatings were almost identical, irrespective of the topography treated. Minimal local differences were found in terms of morphology, and the growth rate were related to specific topographical features. Nevertheless, all the PEO-coated substrates presented essentially the same corrosion resistance. Electrochemical tests revealed a localized crevice corrosion susceptibility of all the bare EB topographies, which was successfully prevented after the PEO treatment.
KW - corrosion
KW - crevice
KW - electron beam processing
KW - electron beam surface structuring
KW - flash-PEO
KW - plasma electrolytic oxidation
KW - titanium
UR - http://www.scopus.com/inward/record.url?scp=85140903928&partnerID=8YFLogxK
U2 - 10.3390/coatings12101573
DO - 10.3390/coatings12101573
M3 - Article
AN - SCOPUS:85140903928
SN - 2079-6412
VL - 12
JO - Coatings
JF - Coatings
IS - 10
M1 - 1573
ER -