Title : ( Correlation of surface Volta potential with galvanic corrosion initiation sites in solid-state welded Ti-Cu bimetal using AFM-SKPFM )
Authors: Ehsan Rahimi , Ali Rafsanjani , A. Imani , S. Hosseinpour , Ali Davoodi ,
Full TextAbstract
This study aims to correlate the microstructure and Volta potential distribution of Ti-Cu welded bimetal to its corrosion initiation sites, using AFM-SKPFM, and SEM-EDS. Local melted zones with Ti-Cu intermetallic precipitates in weld interface and in Cu matrix showed different Volta potential values in comparison with those ofTi and Cu regions. SKPFM revealed that Cu region has a higher Volta potential than that of Ti region. AFM and microstructural images after immersion in corrosive media proved the presence of a galvanic cell. Corrosion mainly extends on Cu side due to the increasing growth of Ti passive film.
Keywords
SKPFM Dissimilar welding Local melted zone Galvanic corrosion
@article{paperid:1069403,
author = {Rahimi, Ehsan and Rafsanjani, Ali and A. Imani and S. Hosseinpour and Davoodi, Ali},
title = {Correlation of surface Volta potential with galvanic corrosion initiation sites in solid-state welded Ti-Cu bimetal using AFM-SKPFM},
journal = {Corrosion Science},
year = {2018},
volume = {140},
number = {14},
month = {July},
issn = {0010-938X},
pages = {30--39},
numpages = {9},
keywords = {SKPFM
Dissimilar welding
Local melted zone
Galvanic corrosion},
}
%0 Journal Article
%T Correlation of surface Volta potential with galvanic corrosion initiation sites in solid-state welded Ti-Cu bimetal using AFM-SKPFM
%A Rahimi, Ehsan
%A Rafsanjani, Ali
%A A. Imani
%A S. Hosseinpour
%A Davoodi, Ali
%J Corrosion Science
%@ 0010-938X
%D 2018
