can be used for corrosion test with high performance
At present, in situ detection of organic coating corrosion resistance, electrochemical
method is the main method. Organic coatings with ohm impedance very high value,
if the metal / coating system for constant potential polarization, potential drop and
metal / organic coating of polymer interface potential drop compared to large in
magnitude, therefore the electrochemical technology DC type of organic coating is
not quick enough. In recent years, electrochemical technology for testing of organic
coatings with electrochemical impedance technique (EIS), scanning Kelvin probe (SKP),
scanning vibrating electrode (SVET) and local impedance spectroscopy (LEIS). The EIS
method is applied to a small sinusoidal AC signal amplitude on the research system,
and then measure the response signal system, obtained by impedance, capacitive
system surface spectrum, and then using the mathematical method and the equivalent
circuit model can obtain a variety of electrochemical information system.
can be used for corrosion test with high performance
At present, in situ detection of organic coating corrosion resistance, electrochemical
method is the main method. Organic coatings with ohm impedance very high value,
if the metal / coating system for constant potential polarization, potential drop and
metal / organic coating of polymer interface potential drop compared to large in
magnitude, therefore the electrochemical technology DC type of organic coating is
not quick enough. In recent years, electrochemical technology for testing of organic
coatings with electrochemical impedance technique (EIS), scanning Kelvin probe (SKP),
scanning vibrating electrode (SVET) and local impedance spectroscopy (LEIS). The EIS
method is applied to a small sinusoidal AC signal amplitude on the research system,
and then measure the response signal system, obtained by impedance, capacitive
system surface spectrum, and then using the mathematical method and the equivalent
circuit model can obtain a variety of electrochemical information system.
