Universiti Teknologi Malaysia Institutional Repository

Silver additions influence on biomedical porous Ti-Ni SMAs fabricated by microwave sintering

Ibrahim, M. K. and Hamzah, E. and Saud, S. N. and Nazim, E. M. and Bahador, A. (2018) Silver additions influence on biomedical porous Ti-Ni SMAs fabricated by microwave sintering. Jurnal Teknologi, 80 (4). pp. 97-102. ISSN 0127-9696

[img]
Preview
PDF
891kB

Official URL: http://dx.doi.org/10.11113/jt.v80.11766

Abstract

Ti-Ni and Ti-Ni-Ag shape memory alloys (SMAs) were prepared by microwave sintering. In Ti (49 -%Ag)-Ni51-Ag (atomic percentage), the silver was added with three percentages of (0.246, 0.5 and 1.51) at. %, respectively. The influence of Ag addition on the microstructure, phase composition, transformation temperatures and mechanical properties were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), differential scanning calorimeter (DSC) and compression test. The microstructure shows needles and plates inside Ti-rich region. The R phase appears at the plane (-112) and the plane (300). This phase has appeared during cooling and heating of the baseline of DSC test. The compression strain at maximum strength was improved, while the compression strength was reduced. The highest compressive strain was for the sample with 0.246 at. % Ag. The elastic modulus decreases with the increasing of Ag content. The elastic modulus of these alloys was low that make it proper for biomedical applications such as natural human bone due to the sintering method and also improve by adding silver.

Item Type:Article
Uncontrolled Keywords:Biomedical Ti-Ni-Ag SMAs, Mechanical alloying, Mechanical properties, Microstructure, Microwave sintering
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:79705
Deposited By: Fazli Masari
Deposited On:28 Jan 2019 06:38
Last Modified:28 Jan 2019 06:38

Repository Staff Only: item control page