Deparment of mechanical engineering;
Science and Research branch;
Islamic Azad University;
Tehran 1477893855;
Oran;
Department of mechanical engineering;
Iran University of Science and Technology;
Tehran 13114-16846;
Iran;
Materials Science and Engineering Department;
Hamedan University of Technology;
Hlamedan 6516913418;
Iran;
HEA; SBF; implant material; electrochemical impedance test; Nyquist; polarization test;