1-20 of 218 Search Results for

electrochemical potential

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 Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910049
EISBN: 978-1-62708-250-1
... to the potential-pH diagram Fig. 15 Corrosion of iron in hydrochloric acid Fig. 16 Free energy and electrochemical potential for an activation-controlled reaction. Reaction rate increases exponentially with driving force. Fig. 31 Equilibrium or steady-state free-energy condition...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.t65940023
EISBN: 978-1-62708-302-7
... Fig. 2.1 The electrochemical cell with iron and hydrogen half-cell reactions Fig. 2.6 Dependence of metal-reaction equilibrium potential on metal-ion activity Fig. 2.7 Dependence of hydrogen-reaction equilibrium potential on pH Fig. 2.8 Dependence of hydrogen-reaction...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090067
EISBN: 978-1-62708-266-2
... embrittlement is the predominant mechanism. It explains how different application variables affect SCC, including loading mode, state of stress, type of steel, temperature, electrochemical potential, heat treatment, and deformation processes. It also compares SCC characteristics in different high-strength...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.t65940001
EISBN: 978-1-62708-302-7
..., the elementary electrochemical corrosion circuit, using it to explain how electric potential differences drive the corrosion process and how corrosion rates vary in proportion to current density. The chapter concludes with a discussion on the importance of corrosion products, such as oxides and hydroxides...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.t65940233
EISBN: 978-1-62708-302-7
... values for M, m, and ρ. This procedure assumes nonselective corrosion of the elemental constituents of the alloy. Fig. 6.13 Applied potential and resultant external current relative to the electrochemical impedance spectroscopy method Fig. 6.21 Two-electrode method Fig. 6.12...
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
... conditions and those on the fully exposed surface. However, the tight geometry inherent in crevices leads to severe restriction of mass transport, allowing large differences in concentration and electrochemical potential to develop and be maintained between the fully exposed surface and the occluded crevice...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030165
EISBN: 978-1-62708-282-2
... or alloys immersed in the same electrolyte are in electrical contact. The metal in the galvanic couple with the lower corrosion (electrochemical) potential has its potential pulled in the positive direction by the metal that has the higher corrosion potential. This generally causes the metal or alloy...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090001
EISBN: 978-1-62708-266-2
... 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, it may be possible to arrest or stimulate crack propagation...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060369
EISBN: 978-1-62708-261-7
..., such as municipal and industrial water supplies. Metals can occupy various chemical states depending mainly on the pH of the environment and their electrochemical potential. In this regard, Pourbaix diagrams (pH-potential diagrams) show the forms of the metal that are thermodynamically stable over a range of pH...
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...
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
... the question is asked, “Under what conditions can corrosion of metals occur in aqueous solutions?,” the answer can usually be found using Pourbaix diagrams, which show regions of metal stability and corrosion on axes of metal electrochemical potential as a function of pH of the electrolyte ( Ref 13...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910427
EISBN: 978-1-62708-250-1
... of this chapter. Atmospheric Tests Electrochemical test methods primarily focus on the control and measurement of the fundamental properties of electrochemical reactions. The electrochemical potential is equivalent to the driving force for reactions, and it determines the reactions that can occur...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480331
EISBN: 978-1-62708-318-8
... the thermodynamically stable phase regions as a function of electrochemical potential and solution pH. Used as a starting point, these diagrams can be very helpful in predicting corrosion problems. Care must be exercised in their use, because they do not predict the magnitude of corrosion attack. In addition, potential...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310011
EISBN: 978-1-62708-286-0
... an introduction to the fundamentals of electrochemical theory as it pertains to corrosion. Thermodynamics are presented in light of electrochemical potentials as opposed to purely chemical ones. Chapter 3 introduces the formal terms needed to describe electrode reaction kinetics. Chapter 4 describes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.9781627083027
EISBN: 978-1-62708-302-7
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
..., because the potential of the vessel wall serving as the anode must be measured and controlled. The reference electrode must have an electrochemical potential that is constant with respect to time and is minimally affected by changes in temperature and solution composition. Reference electrodes used...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090043
EISBN: 978-1-62708-266-2
... mechanisms are thought to be operative: anodic (active-path) SCC and cathodic (hydrogen-embrittlement—the effect of hydrogen in which the fracture toughness, K Ic , of the material is reduced) SCC ( Ref 2.4 ). These are sometimes differentiated by their electrochemical potential, pH, and temperature...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.t65940271
EISBN: 978-1-62708-302-7
... 28. Leckie H.P. and Uhlig H.H. , Environmental Factors Affecting the Critical Potential for Pitting in 18-8 Stainless Steel , J. Electrochem. Soc. , Vol 113 , 1968 , p 1262 – 1267 10.1149/1.2423801 29. Galvele J.R. , Present State of Understanding of the Breakdown...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910407
EISBN: 978-1-62708-250-1
... mesh anodes used to protect reinforcing steel in bridge decks, parking garages, and other large structural surfaces. The concept of anodic protection is related to a potential-pH diagram and to electrochemical polarization curves for an active-passive metal ( Fig. 15 ). In the potential-pH...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.9781627082501
EISBN: 978-1-62708-250-1