Voltammetric studies of extruded pure magnesium in different electrolytes and its corrosion morphology
Research output: Contributions to collected editions/works › Article in conference proceedings › Research › peer-review
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Magnesium Technology 2017. ed. / Neale R. Neelameggham; Alok Singh; Kiran N. Solanki; Dmytro Orlov. Springer International Publishing AG, 2017. p. 429-437 (Minerals, Metals and Materials Series; Vol. Part F8).
Research output: Contributions to collected editions/works › Article in conference proceedings › Research › peer-review
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TY - CHAP
T1 - Voltammetric studies of extruded pure magnesium in different electrolytes and its corrosion morphology
AU - Maier, Petra
AU - Gentzsch, Leon
AU - Hort, Norbert
PY - 2017
Y1 - 2017
N2 - This study concerns the voltammetric behavior in different electrolytes of pure Mg processed by direct extrusion. The recrystallized microstructure is fine grained and homogeneously distributed. Mg is known to suffer pitting corrosion when exposed to chloride solutions. To cause a high anodic dissolution, corrosion has been evaluated with potentiodynamic polarization in Ringer, HBSS and DMEM up to 500 mV. The anodic current density within the active corrosion region and the current density and potential for passivation were used to compare the corrosion behavior. Corrosion in DMEM showed a tendency to passivation, Mg in HBSS only pseudo-passivated. Corrosion in Ringer showed the highest current density without passivation up to 500 mV. Corrosion morphology is discussed by using the pitting factor and size of corroded area. These values are correlated to the current density-potential curves. With decreased corroded area due to passivation the pitting factor increases. Corrosion behavior is compared to immersion tests.
AB - This study concerns the voltammetric behavior in different electrolytes of pure Mg processed by direct extrusion. The recrystallized microstructure is fine grained and homogeneously distributed. Mg is known to suffer pitting corrosion when exposed to chloride solutions. To cause a high anodic dissolution, corrosion has been evaluated with potentiodynamic polarization in Ringer, HBSS and DMEM up to 500 mV. The anodic current density within the active corrosion region and the current density and potential for passivation were used to compare the corrosion behavior. Corrosion in DMEM showed a tendency to passivation, Mg in HBSS only pseudo-passivated. Corrosion in Ringer showed the highest current density without passivation up to 500 mV. Corrosion morphology is discussed by using the pitting factor and size of corroded area. These values are correlated to the current density-potential curves. With decreased corroded area due to passivation the pitting factor increases. Corrosion behavior is compared to immersion tests.
KW - Immersion
KW - Magnesium
KW - Morphology
KW - Voltammetry
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=85041208062&partnerID=8YFLogxK
U2 - 10.1007/978-3-319-52392-7_60
DO - 10.1007/978-3-319-52392-7_60
M3 - Article in conference proceedings
AN - SCOPUS:85041208062
SN - 978-3-319-84895-2
SN - 978-3-319-52391-0
T3 - Minerals, Metals and Materials Series
SP - 429
EP - 437
BT - Magnesium Technology 2017
A2 - Neelameggham, Neale R.
A2 - Singh, Alok
A2 - Solanki, Kiran N.
A2 - Orlov, Dmytro
PB - Springer International Publishing AG
T2 - International Symposium on Magnesium Technology 2017
Y2 - 26 February 2017 through 2 March 2017
ER -