Detailed Information

Cited 16 time in webofscience Cited 15 time in scopus
Metadata Downloads

Highly porous Ni-free Ti-based scaffolds with large recoverable strain for biomedical applications

Authors
Li, ShuangleiKim, Yeon-wookChoi, Mi-seonNam, Tae-hyun
Issue Date
Jan-2020
Publisher
Elsevier BV
Keywords
porous materials; Shape-memory alloys; age-hardening; Superplasticity; rapid solidification; biomedical
Citation
Intermetallics, v.116
Indexed
SCIE
SCOPUS
Journal Title
Intermetallics
Volume
116
URI
https://scholarworks.gnu.ac.kr/handle/sw.gnu/7061
DOI
10.1016/j.intermet.2019.106657
ISSN
0966-9795
1879-0216
Abstract
Highly porous Ti-18Zr-12.5Nb-25n (at.%) scaffolds with porosities of 70%, 75% and 80% were prepared by sintering rapidly solidified alloy fibers. Superelastic behavior of alloy fiber was investigated by the dynamic mechanical analyzer (DMA). Phase identifications of alloy fiber and scaffold were studied by X-ray diffraction (XRD). Precipitates in alloy fiber were investigated by transmission electron microscope (TEM). Porous structure of alloy scaffold was observed by scanning electron microscope (SEM). Mechanical properties and the superelasticity of alloy scaffold were investigated using compressive test. The superelasticity of alloy fibers was improved after aged at 673 K for 3.6 ks due to alpha precipitates. The sintered scaffolds showed three-dimensional networks with fiber-fiber sintering joints. The compressive yield stress and elastic modulus of the alloy scaffolds aged at 673 K for 3.6 ks were in the range of 5.0-16.7 MPa and 0.33-1.05 GPa, respectively. These values were a close match to those for cancellous bone. The recoverable strain increased from 3.2% to 3.7% with the increase in porosity from 70% to 80% in aged Ti-Zr-Nb-Sn scaffolds when tested at human body temperature (310 K).
Files in This Item
There are no files associated with this item.
Appears in
Collections
공학계열 > Dept.of Materials Engineering and Convergence Technology > Journal Articles

qrcode

Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.

Related Researcher

Researcher Nam, Tae Hyeon photo

Nam, Tae Hyeon
대학원 (나노신소재융합공학과)
Read more

Altmetrics

Total Views & Downloads

BROWSE