Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Induced Polarization of Rocks Containing Metallic Particles : Evidence of Passivation Effect. / Gurin, Grigory; Titov, Konstantin; Ilyin, Yuri.
в: Geophysical Research Letters, Том 46, № 2, 28.01.2019, стр. 670-677.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Induced Polarization of Rocks Containing Metallic Particles
T2 - Evidence of Passivation Effect
AU - Gurin, Grigory
AU - Titov, Konstantin
AU - Ilyin, Yuri
PY - 2019/1/28
Y1 - 2019/1/28
N2 - We studied the impact of electrical isolation (passivation) of metallic particles on induced polarization (IP) parameters. We carried out laboratory experiments with six synthetic models made of sieved sand mixed with metallic particles. The purpose of this experiment was to understand what mechanism (polarization of positive and negative charge carriers within the particles or interfacial polarization) was responsible for the IP effect. Size and location of passivated zones on the particle surfaces varied from model to model. We observed a decrease of the total chargeability and relaxation time values with the increase of passivated surface. Fully passivated metallic particles showed no IP effect. These data suggest the dominant role of the interface phenomena in IP associated with metallic particles.
AB - We studied the impact of electrical isolation (passivation) of metallic particles on induced polarization (IP) parameters. We carried out laboratory experiments with six synthetic models made of sieved sand mixed with metallic particles. The purpose of this experiment was to understand what mechanism (polarization of positive and negative charge carriers within the particles or interfacial polarization) was responsible for the IP effect. Size and location of passivated zones on the particle surfaces varied from model to model. We observed a decrease of the total chargeability and relaxation time values with the increase of passivated surface. Fully passivated metallic particles showed no IP effect. These data suggest the dominant role of the interface phenomena in IP associated with metallic particles.
KW - induced polarization
KW - interface phenomena
KW - metallic particles
UR - http://www.scopus.com/inward/record.url?scp=85060236418&partnerID=8YFLogxK
U2 - 10.1029/2018GL080107
DO - 10.1029/2018GL080107
M3 - Article
AN - SCOPUS:85060236418
VL - 46
SP - 670
EP - 677
JO - Geophysical Research Letters
JF - Geophysical Research Letters
SN - 0094-8276
IS - 2
ER -
ID: 39284143