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@ARTICLE{Akman:639424,
author = {Akman, Adnan and Douest, Yohan and Alberta, Ludovico Andrea
and Perrin, Kevin and Trunfio Sfarghiu, Ana-Maria and
Courtois, Nicolas and Ter-Ovanessian, Benoit and Pilz,
Stefan and Zimmermann, Martina and Calin, Mariana and
Gebert, Annett},
title = {{T}ribocorrosion behaviour of additively manufactured
β-type {T}i–{N}b alloy for implant applications},
journal = {Journal of materials research and technology},
volume = {31},
issn = {2238-7854},
address = {Rio de Janeiro},
publisher = {Elsevier},
reportid = {PUBDB-2025-04516},
pages = {1419 - 1429},
year = {2024},
note = {Deutsche Forschungsgemeinschaft (DFG) under projects
$GE/1106/121\&2$ no 41995231.},
abstract = {β-type Ti–Nb alloys are promising materials for
load-bearing implant applications with improved mechanical
biofunctionality and biocompatibility. In this work, the
electrochemical and tribo-electrochemical behaviour of laser
powder bed fusion (LPBF) produced β-type Ti–42Nb alloy
processed via Gaussian and top hat laser was investigated
and compared with commercial grade β-type Ti–45Nb and
α+β-type Ti–6Al–4V ELI. Electrochemical impedance
spectroscopy (EIS) and potentiodynamic polarization
experiments were performed in phosphate-buffered saline
(PBS) for corrosion behaviour. Tribocorrosion behaviour was
studied under open circuit potential (OCP) conditions in PBS
by using a reciprocating pin-on-disk tribometer. The
passivation nature of the LPBF alloys is more decisive than
the microstructural particularities for electrochemical
behaviour. The overall corrosion response is similar due to
the protective nature of the passive films formed on Ti
alloys. Ti–6Al–4V ELI exhibits the best corrosion
performance among all tested alloys with lower corrosion and
passivation current density values. However, LPBF-produced
alloys exhibit less reactive surfaces with better passive
film properties compared to Ti–45Nb. In addition, EIS
results revealed that passive film resistance values are
higher for LPBF-produced alloys than conventionally produced
Ti–45Nb. LPBF-produced alloys exhibit better
tribo-electrochemical behaviour compared to Ti–45Nb. The
differences in volume loss are mainly attributed to the
microhardness of the alloys and the volume loss is dominated
by mechanical wear. The alloys produced with LPBF show
promising corrosion and tribocorrosion performance to be a
potential candidate for load-bearing implant applications.},
cin = {DOOR ; HAS-User / Hereon},
ddc = {670},
cid = {I:(DE-H253)HAS-User-20120731 / I:(DE-H253)Hereon-20210428},
pnm = {6G3 - PETRA III (DESY) (POF4-6G3) / BIOREMIA -
BIOfilm-REsistant Materials for hard tissue Implant
Applications (861046)},
pid = {G:(DE-HGF)POF4-6G3 / G:(EU-Grant)861046},
experiment = {EXP:(DE-H253)P-P07-20150101},
typ = {PUB:(DE-HGF)16},
doi = {10.1016/j.jmrt.2024.06.172},
url = {https://bib-pubdb1.desy.de/record/639424},
}