Title : ( Effect of grain refinement on the mechanical and corrosion behavior of ECAP-processed Sn-5Sb alloy studied by positron annihilation lifetime and Doppler broadening spectroscopy )
Authors: S. Alipour , Hossein Vafaeenezhad , F. Ezatirad 3 , M. Fesahat , M. Mahmoudi , S.M. Mousavi-Khoshdel ,
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Abstract
This study examines the passive film properties of Sn-5Sb alloy processed through Equal Channel Angular Pressing (ECAP) for application in gas turbine bearing pads. The alloy was analyzed in a 0.2 M Na2B4O7 solution utilizing multiple electrochemical methods, including cyclic voltammetry (CV), potentiodynamic polarization (PDP), and electrochemical impedance spectroscopy (EIS). The microstructure and corrosion products were analyzed utilizing optical microscopy (OM), X-ray diffraction (XRD), and field emission scanning electron microscopy (FESEM). The findings indicated that ECAP processing enhanced the grain structure, leading to a protective layer with improved corrosion resistance. Positron Annihilation Lifetime Spectroscopy (PALS) and Coincidence Doppler Broadening Spectroscopy (CDBS) were utilized to identify corrosion-induced damage.
Keywords
, Sn-5Sb alloy, Equal Channel Angular Pressing (ECAP), Electrochemical behavior, Positron Annihilation Lifetime Spectroscopy (PALS), Corrosion resistance.
@article{paperid:1101563,
author = {س. علیپور and Hossein Vafaeenezhad, and ف. عزتی راد and م. فصاحت and م. محمودی and س. م. خوشدل},
title = {Effect of grain refinement on the mechanical and corrosion behavior of ECAP-processed Sn-5Sb alloy studied by positron annihilation lifetime and Doppler broadening spectroscopy},
journal = {Journal of Alloys and Compounds},
year = {2025},
volume = {1011},
month = {January},
issn = {0925-8388},
pages = {178175--178175-42},
numpages = {0},
keywords = {Sn-5Sb alloy; Equal Channel Angular Pressing (ECAP); Electrochemical behavior; Positron
Annihilation Lifetime Spectroscopy (PALS); Corrosion resistance.},
}
%0 Journal Article
%T Effect of grain refinement on the mechanical and corrosion behavior of ECAP-processed Sn-5Sb alloy studied by positron annihilation lifetime and Doppler broadening spectroscopy
%A س. علیپور
%A Hossein Vafaeenezhad,
%A ف. عزتی راد
%A م. فصاحت
%A م. محمودی
%A س. م. خوشدل
%J Journal of Alloys and Compounds
%@ 0925-8388
%D 2025
