RT info:eu-repo/semantics/article
T1 Multi-barrel electrodes containing an internal micro-reference for the improved visualization of the galvanic corrosion of magnesium using potentiometric SECM
A1 Souto, Ricardo Manuel
A1 Filotás, Dániel
A1 Fernández Pérez, Bibiana María
A1 Nagy, Lívia
A1 Nagy, Géza
K1 SECM
K1 ion selective microelectrode
K1 galvanic corrosion
K1 pH distribution
K1 Mg dissolution
K1 magnesium
AB Simultaneous monitoring of pH and Mg2+ distributions above AZ63 magnesium alloy, eitherspontaneously corroding or galvanically coupled with iron, was achieved using SECM in thepotentiometric operation. By introducing an internal micro-reference electrode in a multi-barrelarrangement of the ion-selective microelectrode used as scanning probe, superior performancewas achieved compared to conventional single-barrel and double-barrel assemblies. In this way,the impact of the overestimated acidification accompanying metal dissolution using conventionaltips was established from model experiments using non ion-sensitive open micropipettes and pHantimony microelectrodes. It is shown that the simultaneously acquired pH and pMg mapsprovide complementary information on the spontaneous and galvanic corrosion of AZ63magnesium alloy
YR 2019
FD 2019
LK http://riull.ull.es/xmlui/handle/915/18948
UL http://riull.ull.es/xmlui/handle/915/18948
LA en
DS Repositorio institucional de la Universidad de La Laguna
RD 10-may-2024