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Effect of Temperature on the Crevice Corrosion of Nickel Alloys Containing Chromium and Molybdenum

Published on Jan 1, 2015in Journal of The Electrochemical Society3.12
· DOI :10.1149/2.0431503jes
Edgar C. Hornus3
Estimated H-index: 3
,
C. Mabel Giordano4
Estimated H-index: 4
+ 2 AuthorsRaul B. Rebak19
Estimated H-index: 19
Abstract
  • References (35)
  • Citations (10)
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References35
Newest
#1A. K. Mishra (UWO: University of Western Ontario)H-Index: 12
#2D.W. ShoesmithH-Index: 26
The effects of Cr, Mo, and W on the crevice corrosion of a number of commercial Ni-Cr-Mo(W) alloys in 1.0 mol/L sodium chloride (NaCl) were studied using the potentiodynamic-galvanostatic-potentiod...
22 CitationsSource
#1M. Rincón Ortíz (CONICET: National Scientific and Technical Research Council)H-Index: 3
#2M.A. Rodríguez (CONICET: National Scientific and Technical Research Council)H-Index: 3
Last. Raul B. Rebak (GE: General Electric)H-Index: 19
view all 4 authors...
Abstract Oxyanions were tested as inhibitors of the chloride-induced crevice corrosion of Alloy 22, at 90 °C. Nitrate was the most efficient inhibitor showing R CRIT = 0.2 for the two tested chloride concentrations. Sulphate showed R CRIT values of 1 and 2 in 0.1 mol/L and 1 mol/L NaCl solutions, respectively. Carbonate showed R CRIT = 1 while bicarbonate and carbonic acid did not show any inhibiting effect. Chromate and molybdate showed R CRIT = 0.5 in 0.1 mol/L NaCl solutions being less effect...
22 CitationsSource
#2C. Mabel GiordanoH-Index: 4
Last. Raul B. Rebak (GE: General Electric)H-Index: 19
view all 5 authors...
42 CitationsSource
#1Pellumb Jakupi (UWO: University of Western Ontario)H-Index: 13
#2J.J. Noël (UWO: University of Western Ontario)H-Index: 13
Last. D.W. Shoesmith (UWO: University of Western Ontario)H-Index: 26
view all 3 authors...
Abstract The initiation and propagation of crevice corrosion on the Ni–Cr–Mo Alloy-22 has been studied in concentrated chloride solutions under galvanically-coupled and galvanostatic conditions. Under galvanically-coupled natural corrosion conditions crevice corrosion initiated but propagation was limited by repassivation. This was attributed to the slow kinetics of oxygen reduction on passive surfaces external to the crevice. Under galvanostatic conditions a potential more positive than 200 mV ...
28 CitationsSource
#1Pellumb Jakupi (UWO: University of Western Ontario)H-Index: 13
#2Fengping Wang (USTB: University of Science and Technology Beijing)H-Index: 5
Last. D.W. Shoesmith (UWO: University of Western Ontario)H-Index: 26
view all 4 authors...
Abstract Surface analytical techniques were applied to characterize corrosion products formed during the crevice corrosion of the Ni–Cr–Mo(W) Alloy-22 in 5 mol/L NaCl at 120 °C. Micro-Raman spectroscopy demonstrated the formation of polymeric molybdates within the crevice corroded region where intergranular corrosion dominated. The location and chemical speciation of the Mo and W species formed was investigated by Raman mapping. Crevice corrosion was found to propagate preferentially across the ...
44 CitationsSource
#1C. Mabel GiordanoH-Index: 4
#2M. Rincón OrtízH-Index: 3
Last. Raul B. Rebak (GE: General Electric)H-Index: 19
view all 5 authors...
AbstractAlloy 22 (UNS N06022) belongs to the Ni–Cr–Mo family, and it is highly resistant to general and localised corrosion; however, it may suffer crevice corrosion in aggressive environmental conditions. The susceptibility to crevice corrosion is measured by the value of the repassivation potential. The objective of this work is to compare different electrochemical methods for determining the repassivation potential of alloy 22; these include cyclic potentiodynamic polarisation, Tsujikawa–Hisa...
21 CitationsSource
#1M. Rincón OrtízH-Index: 3
#2Mirtha RodríguezH-Index: 4
Last. Raul B. RebakH-Index: 19
view all 4 authors...
Abstract Ni-Cr-Mo alloys are highly resistant to general and localized corrosion, but they may suffer crevice corrosion in aggressive environmental conditions, such as high-chloride concentrations,...
31 CitationsSource
Abstract One important factor affecting crevice corrosion of passive metals is the crevice geometry, e.g., the gap of the crevice. The crevice geometry can be affected by the properties of the materials used as the crevice formers, i.e., a polymeric crevice former can conform to the surface roughness of a metal specimen, which helps the creation of a tighter crevice gap. The objective of this work was to investigate the effects of crevice former materials on the evolution of crevice corrosion da...
9 CitationsSource
#1Florent Bocher (UVA: University of Virginia)H-Index: 8
#2R. HuangH-Index: 2
Last. John R. ScullyH-Index: 33
view all 3 authors...
Abstract Critical potentials for crevice corrosion initiation were predicted for Ni-22Cr-XMo alloys (X=0,3, 6, 9, 13%), Alloy 625 (UNS N06625), and Alloy 22 (UNS N06022) based on electrochemical ox...
18 CitationsSource
#1Pellumb Jakupi (UWO: University of Western Ontario)H-Index: 13
#2J.J. Noël (UWO: University of Western Ontario)H-Index: 13
Last. D.W. Shoesmith (UWO: University of Western Ontario)H-Index: 26
view all 3 authors...
Alloy 22 electrodes crevice corroded under constant current conditions in 5 M NaCl at 120°C accumulated damage predominantly in the form of intergranular corrosion. Electron backscatter diffraction was used to determine the relationship between the location of damage and the crystallographic features of the grains and grain boundaries. The alloy possessed an exceptionally high number of "special" (Σ3) grain boundaries, and an intergranular attack was observed on random grain boundaries not exhib...
22 CitationsSource
Cited By10
Newest
#1K. Lutton Cwalina (UVA: University of Virginia)H-Index: 1
#2C.R. Demarest (UVA: University of Virginia)H-Index: 1
Last. John R. Scully (UVA: University of Virginia)H-Index: 33
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Abstract Minor alloying additions such as molybdenum (Mo) have major effects on the localized corrosion resistance of corrosion resistant alloys containing chromium. However, progress in alloy development is mostly based upon empirical observations, where any mechanistic insights are largely relegated to the latter stages of localized corrosion (i.e., stabilization and propagation) that are more readily accessible experimentally. For instance, it is well understood that Mo and tungsten (W) affec...
3 CitationsSource
#1Jeffrey D. Henderson (UWO: University of Western Ontario)H-Index: 5
#2N. Ebrahimi (UWO: University of Western Ontario)H-Index: 8
Last. James J. Noël (UWO: University of Western Ontario)H-Index: 23
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Abstract Coupling of metal oxidation in crevice corrosion to both O2 reduction on surfaces external to the crevice and H+ reduction occurring within the crevice, was studied using a galvanostatic crevice corrosion technique in conjunction with weight loss analyses. Results suggest internal H+ reduction is a significant contributor to the crevice corrosion of the studied alloys in 5 M NaCl at 120 °C. Repeat experiments suggest damage can be as much as doubled by H+ reduction. This process, howeve...
5 CitationsSource
#1R M CarranzaH-Index: 4
Nickel-based alloys are considered among other candidate materials as engineering barriers of geological repositories due to their excellent corrosion resistance. These alloys possess unique advantages: they may be used in saturated and unsaturated repositories, hosted by practically any rock type, while also compatible with any (or no) backfill, and have minimal impact in other barriers. Alloy-22 (UNS N06022) has been the most studied of this class of alloys for its potential application in the...
6 CitationsSource
Nickel alloys are broadly used in upstream oil and gas applications as a result of an advantageous set of properties including high mechanical strength accompanied by good ductility and toughness, ...
2 CitationsSource
#1Helmuth Sarmiento Klapper (BHGE: Baker Hughes)H-Index: 4
#2Natalia S. Zadorozne (CONICET: National Scientific and Technical Research Council)H-Index: 3
Last. Raul B. Rebak (GE: General Electric)H-Index: 19
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There are a great variety of commercial nickel alloys mainly because nickel is able to dissolve a large amount of alloying elements while maintaining a single ductile austenitic phase. Nickel alloys are generally designed for and used in highly aggressive environments, for example, those where stainless steels may experience pitting corrosion or environmentally assisted cracking. While nickel alloys are generally resistant to pitting corrosion in chloride-containing environments, they may be pro...
4 CitationsSource
#1Edgar C. HornusH-Index: 3
Last. Raul B. RebakH-Index: 19
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The crevice corrosion repassivation potential of austenitic UNS S30400 and UNS S31600 stainless steels was determined in 0.1 mol/L and 1 mol/L NaCl solutions and in 5 mol/L CaCl2 solution at temper...
3 CitationsSource
#1Mariano A. KappesH-Index: 4
Last. Ricardo M. CarranzaH-Index: 10
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Crevice corrosion affects the integrity of stainless steels used in components exposed to seawater. Traditionally, crevice corrosion testing involves the use of artificial crevice formers to obtain a critical crevice potential, which is a measure of the crevice corrosion resistance of the alloy. The critical acidification model proposed by Galvele predicts that the critical crevice potential is the minimum potential required to maintain an acidic solution with a critical pH inside either a pit o...
3 CitationsSource
Source
#1N. Ebrahimi (UWO: University of Western Ontario)H-Index: 8
#2James J. Noël (UWO: University of Western Ontario)H-Index: 23
Last. D.W. Shoesmith (UWO: University of Western Ontario)H-Index: 26
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Abstract The initiation and propagation of crevice corrosion on the BC1 nickel-chromium-molybdenum alloy has been studied galvanostatically in concentrated chloride solution at 120 °C, and the distribution of corrosion damage determined using surface analytical techniques. The distribution of damage was dependent on the applied current and showed an increased tendency to spread across the surface as the applied current was increased. Attempts to induce repassivation by galvanodynamically reducin...
12 CitationsSource
#1Marcela MiyagusukuH-Index: 2
#2Ricardo M. CarranzaH-Index: 10
Last. Raul B. RebakH-Index: 19
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Alloy 22, a nickel-based alloy that belongs to the Ni-Cr-Mo family, shows an outstanding corrosion resistance in most environments. Alloy 22 was extensively studied regarding its crevice corrosion behavior both in pure chloride solutions and in solutions containing other ions such as nitrate, sulfate, and carbonate/bicarbonate. Electrochemical tests were performed to study uniform and localized corrosion of Alloy 22 in a deaerated aqueous solution of 1 M NaCl and 1 M NaCl with different amounts ...
4 CitationsSource