1-20 of 20 Search Results for

Tafel extrapolation

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
Image
Published: 01 January 2003
Fig. 20 Theoretical Tafel plots illustrating the Tafel extrapolation method. SCE, saturated calomel electrode; SHE, standard hydrogen electrode More
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...
Image
Published: 01 June 2012
Fig. 3 Theoretical polarization curve for an electrode in the state of passivity, and corrosion current density determination by Tafel extrapolation More
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
... methods of corrosion measurements can be divided as follows: Without external electrical source Without external electrical source Current measurements Potential measurements With external electrical source With external electrical source Polarization measurements Tafel extrapolation...
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
... is often referred to as Tafel extrapolation ( Ref 2 , 3 ). This concept has been developed further ( Ref 4 , 5 ). In addition, mechanistic information can be obtained by analysis of the Tafel slopes that have characteristic values, depending on the nature of the rate-determining step in the corrosion...
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
... for high rates of corrosion. Techniques discussed include Tafel extrapolation, polarization resistance, electrochemical impedance spectroscopy, electrochemical noise resistance, use of rotating disks and cylinders to study aspects of corrosion affected by solution flow, polarization methods for assessing...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003583
EISBN: 978-1-62708-182-5
... of the present discussion, it is assumed that this does not occur. For active dissolution, therefore, the current should conform to the Tafel relationship ( Eq 30 ), and its extrapolation back to ( E e ) a would yield a value of ( i o ) a . Fig. 17 Polarization curve for a metal that undergoes active...
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
... curves, as well as pitting scans. Polarization curves can be used to determine i corr by Tafel extrapolation, while mass-transport-related phenomena can be evaluated based on the limiting current density ( i lim ) Mechanistic information can be obtained from experimental values of β a and β c...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003677
EISBN: 978-1-62708-182-5
... as the following: (Eq 3) Corrected  i crit  = i crit ( measured ) + i cathodic where the i cathodic can be determined by Tafel extrapolation to the E app , where the apparent i crit is observed. The i crit determined from the anodic polarization data, shown in Fig. 4...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003697
EISBN: 978-1-62708-182-5
... mV criteria would require too much current it is common to use a −100 mV cathodic potential shift as the inspection criterion ( Ref 6 , 10 , 11 , 12 , 13 ). It is sometimes impossible to measure the potential of a cathode surface. In these circumstances, a Tafel extrapolation ( E log i...
Series: ASM Handbook
Volume: 23A
Publisher: ASM International
Published: 12 September 2022
DOI: 10.31399/asm.hb.v23A.a0006889
EISBN: 978-1-62708-392-8
... through the counter electrode. The resultant graph is a current-versus-potential curve. The curve allows for a visual representation of the shift from cathodic to anodic current, E corr and I corr , via Tafel extrapolation and passivation domain. Corrosion current values are displayed in the last...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006415
EISBN: 978-1-62708-192-4
..., φ is polarization potential, and β a and β c are the anodic and cathodic Tafel slopes, respectively. Equation 3 is suitable for describing the behavior of many alloys in aqueous solutions. A nonlinear regression technique is used to determine I c , β a , and β c , and values...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004210
EISBN: 978-1-62708-184-9
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006679
EISBN: 978-1-62708-213-6
... equilibrium potential U 0 ) in a cell is described by the Tafel equation: (Eq 6) I = nFk exp ± α nF Δ U RT where the plus sign under the exponent refers to an anodic reaction, a minus sign refers to a cathodic reaction, n is the number of electrons involved in the electrode...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003548
EISBN: 978-1-62708-180-1
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006783
EISBN: 978-1-62708-295-2
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001117
EISBN: 978-1-62708-162-7
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003822
EISBN: 978-1-62708-183-2
...), d is alloy density (in grams per cubic centimeter), and EW is the equivalent weight for titanium. The equivalent weight for titanium is approximately 16 under reducing acid conditions and 12 under oxidizing conditions. The value of i corr is typically determined from Tafel slope extrapolation...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.9781627082136
EISBN: 978-1-62708-213-6
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.9781627081627
EISBN: 978-1-62708-162-7