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The self-sustaining propagation of crevice corrosion on the hybrid BC1 Ni–Cr–Mo alloy in hot saline solutions

Published on Apr 1, 2016in Corrosion Science6.355
· DOI :10.1016/j.corsci.2016.01.003
N. Ebrahimi8
Estimated H-index: 8
(UWO: University of Western Ontario),
James J. Noël23
Estimated H-index: 23
(UWO: University of Western Ontario)
+ 1 AuthorsD.W. Shoesmith26
Estimated H-index: 26
(UWO: University of Western Ontario)
Source
Abstract
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 reducing the current to zero were unsuccessful. Galvanic coupling to a large BC1 counter electrode showed propagation could be maintained by oxygen reduction on the coupled electrode at a slow rate for >1200 h.
  • References (45)
  • Citations (12)
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References45
Newest
#1N. EbrahimiH-Index: 8
#2Pellumb JakupiH-Index: 13
Last. D.W. ShoesmithH-Index: 26
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22 CitationsSource
The effects of limited remote cathode area on crevice corrosion propagation, repassivation, and anode site reorganization were investigated on AISI 316 stainless steel (UNS S31600) in 0.6 M NaCl at 50°C. Both multiple crevice assemblies and rescaled coupled multi-electrode arrays were utilized. Potentiostatically activated crevices were subjected to conditions that limited propagation by either: (i) stepping the potential downward below the repassivation potential, (ii) performing a downward sca...
4 CitationsSource
#1Akiko Tomio (Nippon Steel)H-Index: 2
#2Masayuki Sagara (Nippon Steel)H-Index: 2
Last. Takeo Kudo (University of Hyogo)H-Index: 3
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Abstract Corrosion test and surface analysis were conducted in the H 2 S–Cl – environments to elucidate the role of alloyed molybdenum on the corrosion resistance of Ni–Cr–Mo–Fe alloys. The alloyed molybdenum improves the localized corrosion resistance. The surface film is of double layers which comprise sulfide including molybdenum and chromium oxide. However, the Ni–Mo–Fe alloy also shows good corrosion resistance in the H 2 S–Cl – environment. This good corrosion resistance is considered to b...
18 CitationsSource
10 CitationsSource
#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
#1Dmitrij Zagidulin (UWO: University of Western Ontario)H-Index: 7
#2Xiangrong Zhang (UWO: University of Western Ontario)H-Index: 4
Last. David W. Shoesmith (UWO: University of Western Ontario)H-Index: 20
view all 5 authors...
The composition of anodically grown oxide films on Alloy 22, a Ni-Cr-Mo(W) alloy, has been investigated in 5 mol l−1 NaCl at room temperature using X-ray photoelectron spectroscopy and time-of-flight secondary ion mass spectrometry. For applied potentials up to 0.2 V (vs Ag/AgCl (saturated KCl solution)), a Cr(III) oxide barrier layer develops at the alloy/oxide interface accounting for the excellent passivity demonstrated to prevail in this potential region by previous electrochemical impedance...
21 CitationsSource
#1A. K. Mishra (UWO: University of Western Ontario)H-Index: 12
#2S. RamamurthyH-Index: 1
Last. D.W. Shoesmith (UWO: University of Western Ontario)H-Index: 26
view all 4 authors...
a b s t r a c t Electrochemical and surface analytical techniques (X-ray photoelectron and Auger spectroscopies) were used to characterize the influence of potential on the properties of the oxide film formed on the Hybrid BC- 1 (a Ni-Cr-Mo) alloy in chloride solutions containing bicarbonate. In the passive region the film possesses the expected bilayer structure with a Cr(III)-dominated barrier layer containing mixed oxidation states of Mo and an outer dominantly-hydroxide layer. At more positi...
12 CitationsSource
#1Shigeaki Kobayashi (Ashikaga Institute of Technology)H-Index: 14
#2T. Maruyama (Ashikaga Institute of Technology)H-Index: 1
Last. Tadao Watanabe (NU: Northeastern University)H-Index: 33
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Abstract The effect of grain boundary microstructure on the fracture resistance of sulfur-doped polycrystalline nickel was investigated using specimens with different grain boundary microstructures to reveal the usefulness of grain boundary engineering for control of segregation-induced intergranular brittle fracture of polycrystalline materials. The sulfur-doped polycrystalline nickel specimen with more homogeneous fine-grained structure and a higher fraction of low-Σ coincidence site lattice (...
53 CitationsSource
#2C. Mabel GiordanoH-Index: 4
Last. Raul B. Rebak (GE: General Electric)H-Index: 19
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Abstract The crevice corrosion kinetics of alloys C-22, C-22HS and HYBRID-BC1 was studied in several chloride solutions at 90 °C. The crevice corrosion resistance of the alloys increased with PREN (Pitting Resistance Equivalent Number), which is mainly affected by the Mo content in the alloys. The crevice corrosion kinetics of the three alloys was analyzed at potentials slightly higher than the repassivation potential. Crevice propagation was controlled by ohmic drop in the more dilute chloride ...
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 Crevice corrosion of alloy-22 was studied galvanostatically (10–200 μA) at 120 °C in 5 M NaCl. Corrosion damage was analyzed by confocal laser scanning microscopy to obtain penetration profiles. Three-dimensional images demonstrate that damage morphologies varied with applied current. At low applied currents (⩽70 μA), propagation predominantly leads to penetration into the alloy, whereas at higher applied currents (>70 μA) corrosion damage spreads across the alloy. Limited penetration d...
30 CitationsSource
Cited By12
Newest
The purpose of this paper is to clarify the influence of bicarbonate, chloride and outer electrode potential on crevice corrosion occurrence and development of X70 steel.,The crevice corrosion behavior in NaHCO3 and NaCl solutions was investigated through modeling and experiments. The electrode potential and current density distribution were simulated, and the acidification of crevice solution was monitored in situ.,The bicarbonate concentration and outer electrode potential remarkably influence...
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#1Jeffrey D. Henderson (UWO: University of Western Ontario)H-Index: 5
#2Xuejie Li (PSL Research University)H-Index: 1
Last. K. Ogle (PSL Research University)H-Index: 9
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Abstract The role of alloyed Mo during transpassive dissolution of four commercially available Ni-based alloys in neutral chloride solution was investigated by atomic emission spectroelectrochemistry. Time-resolved dissolution rates of Ni, Cr, Mo, and Fe were obtained as a function of applied potential. Mo enrichment occurred at the transpassive potentials and redissolved when the potential returned to the passive domain. These results suggest a mechanism of Mo enrichment and release that could ...
3 CitationsSource
Source
#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
#1Francesca Borgioli (UniFI: University of Florence)H-Index: 20
#2Emanuele Galvanetto (UniFI: University of Florence)H-Index: 18
Last. Tiberio Bacci (UniFI: University of Florence)H-Index: 18
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Abstract Low temperature plasma nitriding was performed on CrNi-based (AISI 316L), CrMn-based (AISI 202) and nickel-free (P558) austenitic stainless steels. For all the used steels modified surface layers consist mainly of S phase without the precipitation of large amounts of nitrides, and they show enhanced surface microhardness and corrosion resistance in NaCl acqueous solution. The different electrochemical corrosion testing techniques evidence that the increase of corrosion potential may be ...
6 CitationsSource
#1Y.Z. Li (HUST: Huazhong University of Science and Technology)H-Index: 5
#2N. Xu (HUST: Huazhong University of Science and Technology)H-Index: 5
Last. G.A. Zhang (HUST: Huazhong University of Science and Technology)H-Index: 14
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Abstract The role of acetic acid (HAc) or H + in initiating the crevice corrosion of N80 carbon steel in CO 2 -saturated NaCl solution was studied by weight loss and electrochemical measurements. It is demonstrated that crevice corrosion could be initiated by the concentration difference either HAc or H + between outside and inside the crevice. The corrosion rate inside the crevice becomes higher than that outside the crevice and the total corrosion rate inside and outside the crevice decreases ...
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#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...
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#1Biaobiao Yang (CSU: Central South University)H-Index: 2
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Last. Yunping Li (CSU: Central South University)H-Index: 23
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The influence of Cu addition (0–4 mass%) on the corrosion behavior of Ni–30Co–16Cr–15Mo alloy in neutral chloride solution is investigated by electrochemical measurements. The results indicate that alloy with 0.5 mass% Cu shows inferior corrosion resistance compared to Cu-free alloy under open-circuit potential, which is possibly ascribed to the galvanic corrosion from the insufficient coverage of Cu on the passive film; a higher fraction of Cu results in a significant improvement on corrosion r...
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#1N. Ebrahimi (UWO: University of Western Ontario)H-Index: 8
#2Mark C. Biesinger (UWO: University of Western Ontario)H-Index: 22
Last. James J. Noël (UWO: University of Western Ontario)H-Index: 23
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The electrochemical properties and compositions of passive, transpassive, and re-formed passive oxides on the Ni-Cr-Mo alloys C22 (high Cr/low Mo) and HYBRID BC1 (low Cr/high Mo) have been studied in 5.0M NaCl solutions. At low potentials in the passive region, the oxide was less resistive on BC1 compared to C22, possibly due to the influence of Mo in increasing the number of defects in the oxide. At higher potentials in the passive region, both alloys exhibited similar behaviours and compositio...
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#1Y.Z. LiH-Index: 5
#2X.P. GuoH-Index: 6
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Abstract The corrosion behaviour of N80 carbon steel under the coexistence of stress and crevice in the CO 2 -saturated NaCl solution containing acetic acid (HAc) was studied by electrochemical measurements, surface analysis, and stress analysis. It is demonstrated that the corrosion potential of steel shifts negatively and corrosion activity is enhanced with increasing stress. A deep corrosion groove is formed at crevice mouth, which causes stress concentration, increasing the susceptibility to...
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