1-20 of 179

Search Results for electrochemical impedance measurement

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005683
EISBN: 978-1-62708-198-6
... current density determination by Tafel extrapolation, potentiodynamic measurement of the polarization resistance, electrochemical impedance measurement, and potentiostatic deaeration. Tests combining corrosion and mechanical forces, such as fretting corrosion tests, environment-assisted cracking tests...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004117
EISBN: 978-1-62708-184-9
.... Electrochemical techniques discussed include linear polarization resistance, electrochemical noise, harmonic distortion analysis, electrochemical impedance spectroscopy, and hydrogen permeation. The principles of operation for the corrosion measuring techniques are described along with examples of their use...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003654
EISBN: 978-1-62708-182-5
... the electrochemical impedance spectroscopy and electrochemical noise measurements in a laboratory, especially for the inspection of coatings. electrochemical technique storage tank electrochemical impedance spectroscopy electrochemical noise inspection A VARIETY OF ELECTROCHEMICAL TECHNIQUES are used...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003586
EISBN: 978-1-62708-182-5
... , and C ) that approximate a corroding electrochemical interface are shown. The algebraic sum of R s and R p is measured when a direct-current measurement is performed. The impedance associated with a capacitor approaches infinity as the voltage scan rate approaches 0, and parallel circuit elements...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003644
EISBN: 978-1-62708-182-5
... a high-input impedance voltmeter, while galvanic current and ECN measurements may be carried out using a ZRA instead of a potentiostat, as discussed subsequently. The features and requirements of the instrumentation needed for an electrochemical test are discussed in brief. A more detailed description...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003659
EISBN: 978-1-62708-182-5
... used in electrochemical evaluation. In principle, the same probe elements used for polarization-resistance measurements can be used for ac impedance studies. As shown in Fig. 6 , the ac impedance approach permits the separation and independent analysis of the resistive and capacitive elements...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003653
EISBN: 978-1-62708-182-5
..., and data logger. Source: Ref 11 Fig. 4 Potential versus surface area of cathode with areas marked for no corrosion, mild corrosion, and serious corrosion Electrochemical impedance measuring systems have been developed with implantable electrodes to monitor in situ corrosion of surfaces...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003584
EISBN: 978-1-62708-182-5
... a more complicated behavior. However, Eq 33 remains valid even when the electrochemical system is partly or completely limited by mass transport ( Ref 9 ). It is also important to note that Z F cannot be directly measured. Indeed, the impedance of the metal-electrolyte interface, which...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005730
EISBN: 978-1-62708-171-9
... Abstract This article describes the two commonly used standardized tests for determining the mechanical properties of thermal spray coatings: hardness testing and tensile adhesion testing. It discusses the destructive and non-destructive methods of residual-stress measurement. Electrochemical...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003655
EISBN: 978-1-62708-182-5
... resistance (ER) and inductive resistance, linear polarization resistance (LPR), electrochemical impedance spectroscopy (EIS), zero-resistance ammetry (ZRA), electrochemical noise (ECN) and self- linear polarization resistance (SLPR). Indirect techniques measure parameters that are indirectly related...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001296
EISBN: 978-1-62708-170-2
... Polarization resistance measurements Impedance measurements In the first type, different electrical parameters can be present. In the latter type, only system-adjusted values are measured ( Ref 1 , 2 , 7 , 8 , 9 ). All measurements are performed in different electrochemical cells ( Fig. 3...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003647
EISBN: 978-1-62708-182-5
..., electrochemical impedance spectroscopy), and those in which the potential is scanned over a wide range (anodic and cathodic polarization curves, pitting scans). Galvanic current flowing between biotic and abiotic cells has also been measured using a dual-cell technique (also called “biological battery”). Current...
Image
Published: 01 January 2006
Fig. 7 Corrosion rates of unpolarized coupons (measured using electrochemical impedance spectroscopy) vs. freely corroding potential throughout the test section. Source: Ref 18 More
Image
Published: 01 January 2003
Fig. 9 Corrosion resistance measured as parallel coating resistance, R c , from electrochemical impedance spectroscopy experiments of conversion-coated 2024-T3 exposed to aerated 0.5 M NaCl determined after aging in air. Source: Ref 88 More
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006063
EISBN: 978-1-62708-172-6
... performance. Fig. 37 Electrochemical cell The basic theory supporting electrochemical impedance measurement is that resistors impede the flow of electrical current and that capacitors and inductors will also exhibit an impedance that is a function of ac frequency ( Ref 12...
Image
Published: 01 January 2003
Fig. 9 Electrochemical noise data after trend removal for mild steel exposed to 0.5 N NaCl. (a) Voltage time history. Voltage is measured against SCE. (b) Current time history. (c) Power spectral density (PSD) plot from voltage data. (d) Power Spectral density plot from current data. (e More
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004207
EISBN: 978-1-62708-184-9
... nonelectrochemical methods such as chemical analysis of corrosion products also are used to study the corrosion of biomaterials. The most common way to study corrosion of metallic biomaterials is by anodic polarization ( Ref 65 ) and electrochemical impedance measurements ( Ref 66 ). The three-electrode system...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003592
EISBN: 978-1-62708-182-5
... in cathodic and anodic protection. The potential of an electrode can be determined only by measuring the voltage in an electrochemical cell between this electrode and an electrode of constant potential, called the reference electrode. Many errors and problems can be avoided by careful selection of the best...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003709
EISBN: 978-1-62708-182-5
... a positive potential. If it does not, the polarity switch of the measuring device should be moved to the positive position. Electrode Reactions and Cell Notation An electrochemical cell is composed of at least two half-cell reactions. An anodic reaction is: (Eq 9) A → A n + + n e...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003604
EISBN: 978-1-62708-182-5
... is the exchange current for the copper and silver electrochemical reactions, respectively. There is a characteristic electrostatic difference at these electrodes called the electrode potential difference that can be measured with respect to the standard hydrogen electrode (SHE). E Cu 2...