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anodic dissolution

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030126
EISBN: 978-1-62708-282-2
... component to SCC because hydrogen effects are more prominent under tensile loading conditions ( Ref 41 , 42 ). However, anodic stress-corrosion processes are also aided by the crack opening that results from mode 1 loading. The thermodynamic conditions for anodically assisted SCC are that dissolution...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090001
EISBN: 978-1-62708-266-2
... occur. Lastly, for stress-corrosion crack growth resulting from cathodic hydrogen, a short crack may have to initiate by an anodic dissolution process, while propagation depends on hydrogen activity. Tests on statically loaded smooth samples are usually conducted at various fixed stress levels...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.t65940183
EISBN: 978-1-62708-302-7
...; dashed line, oxide/solution interface. Based on Ref 4 Fig. 5.7 Polarization curves for mild steel in boiling NaOH solutions of various strengths. (Redrawn from Ref 7 ) Fig. 5.6 Anodic polarization curves for iron dissolution (solid curves) and for total current density of iron plus...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090271
EISBN: 978-1-62708-266-2
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
... substrate, (c) crack initiation by anodic dissolution initiating crevice corrosion conditions before repassivation of exposed substrate, and (d) repassivation of exposed substrate before crack initiation. Fig. 7.77 Relationship between pH/potential conditions for severe cracking susceptibility...
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
... reaction rate increases, the polarization of the internal, crevice anode increases as well, leading to increased dissolution rates. This effect is mitigated to the extent that the crevice is under ohmic control due to the restricted geometry ( Ref 44 ). Material selection for crevice-corrosion...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090221
EISBN: 978-1-62708-266-2
... F.I. , and Pugh E.N. , Stress Corrosion Cracking of Brass in Aqueous Ammonia in the Absence of Detectable Anodic Dissolution , Corrosion , Vol 40 ( No. 8 ), 1984 , p 439 10.5006/1.3593952 7.67 Beavers J.A. , Agrawal A.K. , and Berry W.E. , “ Corrosion Related...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030082
EISBN: 978-1-62708-282-2
... A. , Ferrari M. , and Devine T.M. , Embrittlement of Nano-scale Structures , Mech. Res. Commun. , Vol 19 , 1992 , p 555 – 561 10.1016/0093-6413(92)90083-M 32. Fritz J.D. and Pickering H.W. , Selective Anodic Dissolution of Cu-Au Alloys: TEM and Current Transient Study , J...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090303
EISBN: 978-1-62708-266-2
... of zirconium alloys: anodic dissolution ( Ref 11.16 ), hydrogen embrittlement ( Ref 11.3 , 11.48 ), and stress sorption ( Ref 11.12 ). Controversy also exists as to whether different mechanisms are needed to account for intergranular and transgranular cracking. Cox ( Ref 11.49 ) indicates...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.9781627083027
EISBN: 978-1-62708-302-7
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.9781627082501
EISBN: 978-1-62708-250-1
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310027
EISBN: 978-1-62708-286-0
... the pit, thereby separating anode and cathode regions in the differential aeration cell. (c) The presence of Cl − prevents repassivation. As a result of increased acidification, the dissolution rate becomes autocatalytic, and as a result the pit grows in depth. At the outside, the reaction: (Eq...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030070
EISBN: 978-1-62708-282-2
... proposed for SCC ( Ref 11 , 15 – 17 ). The first is anodic dissolution, which is characterized by one or more galvanic processes at or near the grain boundaries (e.g., similar to that discussed for IG corrosion in the 2 xxx section). The second is hydrogen-assisted cracking, in which hydrogen, by one...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090419
EISBN: 978-1-62708-266-2
.... , Vol 50 ( No. 11 ), 2008 , p 3116 – 3122 10.1016/j.corsci.2008.08.026 18.62 Gu B. , Luo J. , and Mao X. , Hydrogen-Facilitated Anodic Dissolution-Type Stress Corrosion Cracking of Pipeline Steels in Near-Neutral pH Solution , Corrosion , Vol 55 ( No. 1 ), 1999 , p 96...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910427
EISBN: 978-1-62708-250-1
... at the anode and cathode in an electrochemical cell. The current is equivalent to the reaction rate in an operating corrosion cell. The greater the current, the greater the corrosion rate; that is, the polarization of an operating corrosion cell is due to activation polarization, concentration polarization...
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 dissolution of the iron at the unprotected site by accepting electrons from the anodic reaction. Oxygen is also available at the anodic site and it contributes to the corrosion locally, but if the cathode/anode area ratio is large, the rate of corrosion will be determined largely by the oxygen reduction...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910099
EISBN: 978-1-62708-250-1
... ( Ref 1 ). The crevice corrosion propagation process is illustrated schematically in Fig. 7 for stainless steel corroding in a neutral aerated sodium chloride solution. The anodic metal dissolution reaction within the crevice, M → M n + + ne − , is balanced by the cathodic reaction on the adjacent...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.9781627082822
EISBN: 978-1-62708-282-2
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610501
EISBN: 978-1-62708-303-4
... or immersed in water are often protected by cathodic protection. Cathodic protection can be achieved by using a direct current power supply (impressed current) or by obtaining electrons from the anodic dissolution of a metal lower in the galvanic series, such as aluminum, zinc, or magnesium sacrificial anodes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230459
EISBN: 978-1-62708-298-3
..., and Vacuum Cast Beryllium in Simulated Cooling Water for the Materials Testing Reactor ,” Report ORNL-942, Oak Ridge National Lab 10.2172/4375012 • Sheth K.G. , Johnson J.W. , and James W.J. , 1969 . The Anodic Dissolution of Polycrystalline Beryllium , Corros. Sci. , Vol 9...