Surface chemical treatment of ultrafine-grained Ti-6Al-7Nb alloy processed by severe plastic deformation. / Oliveira, D. P.; Prokofiev, E.; Sanches, L. F.R.; Polyakova, V.; Valiev, R. Z.; Botta, W. J.; Junior, A. M.J.; Bolfarini, C.
In: Journal of Alloys and Compounds, Vol. 643, No. S1, 14.06.2015, p. S241-S245.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Surface chemical treatment of ultrafine-grained Ti-6Al-7Nb alloy processed by severe plastic deformation
AU - Oliveira, D. P.
AU - Prokofiev, E.
AU - Sanches, L. F.R.
AU - Polyakova, V.
AU - Valiev, R. Z.
AU - Botta, W. J.
AU - Junior, A. M.J.
AU - Bolfarini, C.
PY - 2015/6/14
Y1 - 2015/6/14
N2 - Ti-6Al-7Nb containing harmless for tissues niobium can be a good choice replacing Ti-6Al-4V for orthopedic implants application. Formation of ultrafine-grained (UFG) structure in metals and alloys by severe plastic deformation (SPD) techniques allows for achieving unique mechanical properties. Using equal channel angular pressing (ECAP) UFG structure in Ti-6Al-7Nb alloy with an average size of grains/subgrains of 200 nm was obtained. This UFG Ti-6Al-7Nb alloy has high mechanical (ultimate tensile strength 1470 MPa) and fatigue properties, suitable for practical application. Additionally, surface modifications of titanium alloys aim induce specific responses on osteoblastic cells after implantation. Chemical surface treatments are simple methods to obtain a bioactive for apatite precipitation surface. Phosphoric acid etching combined or not with alkaline treatment presented bioactivity after seven days soaked in simulated body fluid (SBF) solution.
AB - Ti-6Al-7Nb containing harmless for tissues niobium can be a good choice replacing Ti-6Al-4V for orthopedic implants application. Formation of ultrafine-grained (UFG) structure in metals and alloys by severe plastic deformation (SPD) techniques allows for achieving unique mechanical properties. Using equal channel angular pressing (ECAP) UFG structure in Ti-6Al-7Nb alloy with an average size of grains/subgrains of 200 nm was obtained. This UFG Ti-6Al-7Nb alloy has high mechanical (ultimate tensile strength 1470 MPa) and fatigue properties, suitable for practical application. Additionally, surface modifications of titanium alloys aim induce specific responses on osteoblastic cells after implantation. Chemical surface treatments are simple methods to obtain a bioactive for apatite precipitation surface. Phosphoric acid etching combined or not with alkaline treatment presented bioactivity after seven days soaked in simulated body fluid (SBF) solution.
KW - Bioactivity
KW - Surface modification
KW - Ti-6Al-7Nb
KW - Ultrafine-grained
UR - http://www.scopus.com/inward/record.url?scp=84931260385&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2014.11.115
DO - 10.1016/j.jallcom.2014.11.115
M3 - Article
AN - SCOPUS:84931260385
VL - 643
SP - S241-S245
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
IS - S1
ER -
ID: 35164663