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@ARTICLE{Signor:1008430,
author = {Signor, Fernanda and Pereira, Jonas Felipe and Faita,
Fabrício Luiz and Bram, Martin and Daudt, Natália de
Freitas},
title = {{S}olution heat treatment of {T}i-{N}b alloys using a
molten salt shield},
journal = {Materials letters},
volume = {338},
issn = {0167-577X},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2023-02338},
pages = {134039},
year = {2023},
abstract = {Ti-Nb alloys have attracted growing attention for
biomedical implant application due its low elastic modulus.
Nb is a β-stabilizer in Ti alloys and retains its high
biocompatibility. Thermal treatment plays a key role for
optimization of mechanical properties and microstructure of
Ti-Nb alloys. However, high oxygen affinity of Ti alloys
requires the use of a protective atmosphere during their
processing at high temperatures. In this context, we propose
the use of molten salt as novel atmosphere protection during
solution heat treatment of Ti-Nb alloys avoiding elaborated
encapsulation. For that, Ti-Nb parts were solution treated
in molten KCl followed by water quenching. Microstructure
and phase transformation were evaluated by SEM, EDS, X-ray
Diffraction, Elastic Modulus and Vickers microhardness
measurements. No evidence of oxidation of Ti-Nb parts was
found, which suggested that molten salt was an effective
measure to protect Ti alloys from oxidation. After
treatment, a martensitic microstructure was achieved. A
martensitic structure enables to decrease elastic modulus to
ca. 35 GPa, which can avoid stress shield in the case of
bone implant application.},
cin = {IEK-1},
ddc = {670},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {1231 - Electrochemistry for Hydrogen (POF4-123)},
pid = {G:(DE-HGF)POF4-1231},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000939891500001},
doi = {10.1016/j.matlet.2023.134039},
url = {https://juser.fz-juelich.de/record/1008430},
}