Effect of cobalt addition on the corrosion behavior of near equiatomic NiTi shape memory alloy in normal saline solution: electrochemical and XPS studies.

ABSTRACT: The electrochemical and corrosion (uniform and localized) behavior of a binary Ni₅₂Ti₄₈ shape memory alloy (SMA) and two ternary Ni₅₂Ti_48-x Co _x (x = 1.5 and 4.0 wt%) SMAs were studied. Measurements were conducted in 0.9% NaCl solution at 37 °C employing various electrochemical methods. These include: linear polarization resistance (LPR), linear sweep voltammetry (LSV), chronoamperometry and dynamic electrochemical impedance spectroscopy (DEIS). Such measurements were complemented with scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) analysis. Results revealed that the addition of alloyed Co to NiTi significantly reduced the uniform corrosion rate of the studied SMA and greatly enhanced

SUBMITTER: Alqarni ND 

PROVIDER: S-EPMC9080660 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature