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Sigma and Random Grain Boundaries and Their Effect on the Corrosion of the Ni-Cr-Mo Alloy 22

Published on Jan 1, 2016in Journal of The Electrochemical Society3.12
· DOI :10.1149/2.1111605jes
N. Ebrahimi8
Estimated H-index: 8
(UWO: University of Western Ontario),
Pellumb Jakupi13
Estimated H-index: 13
(UWO: University of Western Ontario)
+ 3 AuthorsD.W. Shoesmith26
Estimated H-index: 26
(UWO: University of Western Ontario)
Sources
Abstract
  • References (39)
  • Citations (6)
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References39
Newest
#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
view all 4 authors...
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
#1N. EbrahimiH-Index: 8
#2Pellumb JakupiH-Index: 13
Last. D.W. ShoesmithH-Index: 26
view all 4 authors...
The roles of the alloying elements Mo, Cr, and W in resisting crevice corrosion of UNS N06022, UNS N06625, and UNS N10362 have been studied under galvanostatic conditions in 5 mol/L NaCl at 150°C. Corrosion damage patterns were investigated using surface analytical techniques such as scanning electron microscopy and optical imaging, and the corrosion products characterized by energy dispersive x-ray spectroscopy. While the Cr content of the alloy is critical in controlling initiation of crevice ...
22 CitationsSource
#1S.Y. Persaud (U of T: University of Toronto)H-Index: 9
#2A. Korinek (McMaster University)H-Index: 11
Last. R.C. Newman (U of T: University of Toronto)H-Index: 9
view all 5 authors...
Abstract Alloy 600 in the solution annealed (SA) and thermally treated (TT) conditions was exposed to a hydrogenated steam environment considered to simulate primary water in pressurized water reactors. The likely susceptibility to primary water stress corrosion cracking (PWSCC) was evaluated using the internal oxidation model. A FIB was used to extract cross-sections from Alloy 600 samples and elemental maps were generated; internal oxidation was observed intragranularly in all cases, resulting...
56 CitationsSource
#1Derek J. Horton (UVA: University of Virginia)H-Index: 5
#2A. W. Zhu (UVA: University of Virginia)H-Index: 1
Last. Matthew Neurock (UVA: University of Virginia)H-Index: 58
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Electrochemical dissolution by congruent oxidation of Fe Pd in 1 M HCl solution was strongly controlled by crystallographic orientation. Anodic dissolution was characterized over a wide variety of grain surface plane orientations providing a detailed view of the crystallographic nature of oxidative dissolution and surface facet evolution as a function of grain orientation. Near {100}-oriented grains retained low surface roughness after corrosion and low dissolution rates. Grains with orientation...
6 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
#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
view all 4 authors...
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
view all 5 authors...
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
#1C. Luo (University of Manchester)H-Index: 10
#2Xiaorong Zhou (University of Manchester)H-Index: 34
Last. Anthony E. Hughes (CSIRO: Commonwealth Scientific and Industrial Research Organisation)H-Index: 36
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Abstract Aluminium alloy 2024-T351 was examined using a range of electron microscope techniques at the early stages of attack after immersion in 0.1 M NaCl aqueous solution. At attack sites, a significant portion of the intergranular network was attacked, even though only 15% of the boundaries were decorated by second phase particles (θ-phase). Structure of the grains and the grain boundaries, including grain misorientation angle and grain stored energy, based on dislocation density, were probed...
71 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 By6
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#1Kalinga Simant Bal (IIT-KGP: Indian Institute of Technology Kharagpur)H-Index: 4
#2Jyotsna Dutta Majumdar (IIT-KGP: Indian Institute of Technology Kharagpur)H-Index: 13
Last. Asimava Roy Choudhury (IIT-KGP: Indian Institute of Technology Kharagpur)H-Index: 4
view all 3 authors...
Abstract The laser displacement sensor scan technique proposed in the present study helps to calculate the corrosion rate (CR), and subsequently, determine the susceptibility to intergranular corrosion, without preparing separate samples for the weld zone (WZ), adjacent heat affected zone (HAZ) and unaffected base metal (BM). Processing of the displacement data collected during laser displacement sensor scan of the electron beam welded Hastelloy C-276 sample before and after the corrosion test s...
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For manufacturing copper interconnects by the damscence technique, electrochemical deposition of copper on patterned sustrates requires several additives to achieve compact filling of trenches and vias, where chloride ions play a crucial role. In the highly acidic electrolyte, adsorption of chloride ions on copper is expected to compete with the adsorption of hydrogen, depending on the copper electrode potential. We propose a general phenomenological model of the coadsorption of two ion species ...
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#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
#1B. A. Kobe (UWO: University of Western Ontario)H-Index: 13
#2Martin Badley (UWO: University of Western Ontario)H-Index: 1
Last. D.W. Shoesmith (UWO: University of Western Ontario)H-Index: 26
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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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#1Abhishek Telang (UC: University of Cincinnati)H-Index: 10
#2Amrinder S. GillH-Index: 10
Last. Vijay K. Vasudevan (UC: University of Cincinnati)H-Index: 39
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Abstract In this study, we investigate the effect of thermo-mechanical processing (TMP) on the evolution of low coincident site lattice (CSL) grain boundaries (3 ≤ Σ ≤ 27) and thence on the precipitation behavior of carbides at various types of grain boundaries in Alloy 600. Detailed analysis of the microstructure using Electron Back-scattered Diffraction (EBSD) in the scanning electron microscope (SEM) as well as Precession Electron Diffraction (PED) and Energy Dispersive X-ray Spectroscopy (ED...
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