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electrochemical parameters

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Published: 01 July 2000
Fig. 4.19 Schematic representation of polarization curves for the analysis of galvanic coupling when the coupled metals have similar electrochemical parameters. Tafel polarization is represented. More
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2023
DOI: 10.31399/asm.tb.ciktmse.t56080029
EISBN: 978-1-62708-460-4
... be derived to calculate inhibition efficiency (IE). Problem 4 Several key electrochemical parameters of a zinc surface in both inhibitor-containing and plain sodium chloride solutions are given in the following table. Determine the i corr of the zinc surface for both solutions...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030180
EISBN: 978-1-62708-282-2
... of the electrochemical parameters of the metal-solution system, the geometry of the equipment, any special operational conditions, and the special requirements of the environment around the system. The electrochemical parameters of concern are the potential at which the vessel must be maintained for corrosion protection...
Image
Published: 01 July 2000
Fig. 3.15 Example of overpotential curves for two electrochemical reactions illustrating that the thermodynamic and kinetic parameters place each reaction in different regions of the range of potentials and log |i ex | More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.t65940127
EISBN: 978-1-62708-302-7
... the metal surface ( Ref 2 ). The parameters of the model may be divided into those governing the electrochemical behavior and those governing the current distribution of the metal/environment system. The electrochemical parameters are the difference in thermodynamic equilibrium potentials (E cell = E′ X...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2023
DOI: 10.31399/asm.tb.ciktmse.9781627084604
EISBN: 978-1-62708-460-4
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2023
DOI: 10.31399/asm.tb.ciktmse.t56080001
EISBN: 978-1-62708-460-4
... to evaluate inhibition efficiency through weight loss measurements, linear polarization resistance tests, electrochemical impedance spectroscopy, electrochemical noise monitoring, and surface analysis. It demonstrates the use of potentiodynamic polarization curves, Tafel extrapolations, equivalent circuit...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030033
EISBN: 978-1-62708-282-2
... Abstract This chapter concentrates on the better-known and widely studied phenomenon of pitting corrosion of passive metals. The discussion focuses on different parameters that influence pitting corrosion, namely environment, metal composition, potential, temperature, surface condition...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030005
EISBN: 978-1-62708-282-2
... corrosion attack. Some of the atmospheric parameters and their effects on the corrosion of several metals are then reviewed. The following sections provide information on air chemistry, principal pollutants inducing corrosion, thermodynamics as well as models for prediction of atmospheric corrosion, and use...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.t65940183
EISBN: 978-1-62708-302-7
..., the potential decay curves, and other electrochemical measurements. A major controversy among investigators concerns whether the initial state of passivation is only a chemisorbed monolayer of oxygen ions or is actually an oxide layer ( Ref 1 ). Passivity can be produced when electrochemical measurements...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.cw.t51820203
EISBN: 978-1-62708-339-3
... Abstract This chapter addresses in-service monitoring and corrosion testing of weldments. Three categories of corrosion monitoring are discussed: direct testing of coupons, electrochemical techniques, and nondestructive testing techniques. The majority of the test methods for evaluating...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030126
EISBN: 978-1-62708-282-2
..., but are not limited to: Temperature Pressure Solute species Solute concentration and activity pH Electrochemical potential Solution viscosity Stirring or mixing Altering any of these parameters may alter the rate of the rate-controlling steps, either accelerating or reducing the rate...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910427
EISBN: 978-1-62708-250-1
... the purposes of corrosion tests, the logical steps in a test program, and the preparation and cleaning of test specimens. The focus then moves on to discuss the types and applications of these test categories and the associated evaluation procedures. Excluding electrochemical tests which are addressed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.t65940233
EISBN: 978-1-62708-302-7
... and i o,M . The values of these parameters can provide information on the kinetic mechanisms of the electrochemical reactions, particularly by observing changes in the parameters with changes in the electrolyte composition observed to influence the corrosion rate. If the experimentally determined...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030082
EISBN: 978-1-62708-282-2
... N. , and Sieradzki K. , Dealloying Below the Critical Potential , J. Electrochem. Soc. , Vol 144 , 1997 , p 3545 – 3555 10.1149/1.1838046 48. Ateya B.G. and Pickering H.W. , The Effects of Potential and Kinetic Parameters on the Formation of Passivating Noble Metal...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030039
EISBN: 978-1-62708-282-2
...-month exposure to simulated lap-joint solution. Exterior surfaces were painted. Source: Ref 7 Critical Factors Crevice corrosion involves three fundamental types of processes: electrochemical reactions, homogeneous chemical reactions, and mass transport. The electrochemical reactions include...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.t65940023
EISBN: 978-1-62708-302-7
... Abstract This chapter provides a thorough introduction to the electrochemical thermodynamics that govern electrode reactions associated with corrosion. It begins with a review of the thermodynamic criteria for the stability of chemical reactions based on Gibbs free energy and explains how...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.t65940087
EISBN: 978-1-62708-302-7
... producing oxidation and reduction overpotentials Equations 3.41 and 3.42 give the current density of the oxidation and reduction components of the interface electrochemical reaction as a function of the overpotential, η CT , with i o,M and the β’s as kinetic parameters characterizing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090001
EISBN: 978-1-62708-266-2
... Pressure Solute species Solute concentration and activity pH Electrochemical potential Solution viscosity Stirring or mixing Altering any of these parameters may affect the rate of the rate-controlling steps, either accelerating or reducing the rate of crack propagation. Also...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.9781627083027
EISBN: 978-1-62708-302-7