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1. WO1992016825 - METHOD AND APPARATUS FOR PRODUCING ELECTROCHEMICAL IMPEDANCE SPECTRA

Publication Number WO/1992/016825
Publication Date 01.10.1992
International Application No. PCT/GB1992/000527
International Filing Date 23.03.1992
Chapter 2 Demand Filed 18.09.1992
IPC
G01N 17/02 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
17Investigating resistance of materials to the weather, to corrosion or to light
02Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement
CPC
G01N 17/02
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
17Investigating resistance of materials to the weather, to corrosion, or to light
02Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement
Applicants
  • CAPCIS MARCH LIMITED [GB]/[GB] (AllExceptUS)
  • DAWSON, John, Lionel [GB]/[GB] (UsOnly)
  • EDEN, David, Anthony [GB]/[GB] (UsOnly)
  • CARR, Richard, Norman [GB]/[GB] (UsOnly)
Inventors
  • DAWSON, John, Lionel
  • EDEN, David, Anthony
  • CARR, Richard, Norman
Agents
  • ALLMAN, Peter, John
Priority Data
9106218.223.03.1991GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS FOR PRODUCING ELECTROCHEMICAL IMPEDANCE SPECTRA
(FR) PROCEDE ET APPAREIL DE PRODUCTION DE SPECTRES D'IMPEDANCE ELECTROCHIMIQUE
Abstract
(EN)
A method for producing electrochemical impedance spectra. Spontaneously occuring coupling current noise between an array of electrodes which may be of substantially the same material is detected. A time domain record of the detected current noise is stored and the time domain record of the detected current noise is transformed to the frequency domain. Spontaneously occurring potential noise between the array of electrodes and a further electrode is detected. A time domain record of the detected potential noise is stored and the time domain record of the detected potential noise is transformed to the frequency domain. The frequency domain current noise and potential noise transformations are then transformed to the impedance domain to produce the required electrochemical impedance spectra.
(FR)
Le procédé consiste à détecter le bruit spontané dû au courant de couplage entre un réseau d'électrodes fabriquées à partir de matières sensiblement identiques. On mémorise les valeurs temporelles des bruits de courant détectés, après quoi lesdites valeurs sont transformées en fréquences. On détecte les bruits de potentiel se produisant de manière spontanée entre le réseau d'électrodes et une autre électrode. On mémorise les valeurs temporelles des bruits de potentiel détectés et on transforme lesdites valeurs temporelles en fréquences. Les transformations de bruit de courant et de bruit de potentiel en fréquences sont ensuite transformées en impédances afin d'obtenir les spectres d'impédance électrochimique voulus.
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