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Keywords: repassivation potential
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Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2019, March 24–28, 2019
Paper Number: NACE-2019-12763
... and aggressive process environments. For this purpose, the model calculates the corrosion rates, corrosion potential and repassivation potential as a function of temperature, alkalinity, pH, partial pressure of gases (including H 2 S), and concentrations of various aggressive species. The corrosion rates...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2019, March 24–28, 2019
Paper Number: NACE-2019-12944
... Pipeline Corrosion well integrity flowline corrosion riser corrosion resistance materials and corrosion thermally repassivation potential Subsurface Corrosion APMT corrosion rate texas 77084 FeCrAl alloy corrosion potential current density Houston storage reactor Publication...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2019, March 24–28, 2019
Paper Number: NACE-2019-13058
... resistant alloys to repassivate. This work describes the development of a synergistic combination of two additives that dramatically improve both the breakdown and the repassivation potentials of such materials as UNS S31603 and UNS S31803. Most of the experiments were conducted using cyclic potentiodynamic...
Proceedings Papers
Pavan K. Shukla, Roderick E. Fuentes, Bruce J. Wiersma, Crystal Girardot, Natalie Young, Theodore Venetz
Publisher: NACE International
Paper presented at the CORROSION 2019, March 24–28, 2019
Paper Number: NACE-2019-13101
...) experiments are conducted to identify risk of pitting corrosion, and subsequently determine the level of inhibition needed to mitigate the pitting corrosion. One of the key parameters associated with the determination is the difference between the corrosion and repassivation potentials: if the corrosion...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2018, April 15–19, 2018
Paper Number: NACE-2018-11102
...: 1 M HCl and 7 M LiCl adjusted to a pH of 0. In the second part, crevice repassivation potentials were measured using the potentiodynamic-galvanostatic-potentiodynamic technique in 3.5 wt% NaCl pH = 6.5 solution. This investigation will provide evidence regarding the influence of W in passive film...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2018, April 15–19, 2018
Paper Number: NACE-2018-11306
... materials and corrosion Upstream Oil & Gas Subsurface Corrosion chloride concentration Pipeline Corrosion well integrity steam generator repassivation potential specimen Publication Division permission corrosion flowline corrosion riser corrosion localized corrosion texas...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2017, March 26–30, 2017
Paper Number: NACE-2017-9042
... and corrosion riser corrosion localized corrosion steel permission austenitic stainless steel stainless steel metals & mining Production Chemistry H2S management repassivation potential Publication Division specimen Houston localized corrosion resistance corrosion resistance localized...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2017, March 26–30, 2017
Paper Number: NACE-2017-9163
... flowline corrosion oilfield chemistry well integrity metals & mining Production Chemistry H2S management repassivation potential scratch test Corrosion Inhibition materials and corrosion riser corrosion cyclic polarization test texas 77084 thiosulfate chloride lean duplex...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2017, March 26–30, 2017
Paper Number: NACE-2017-9151
... of suitability of this alloy from a corrosion perspective requires also studies of crevice corrosion at different temperatures, considering that the metal plates for desalinators are usually in contact with rubber gaskets and seals. Different techniques were used to estimate crevice repassivation potential at 30...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2017, March 26–30, 2017
Paper Number: NACE-2017-9689
... repassivation potential texas 77084 machine learning oilfield chemistry well integrity scan current density coefficient manuscript permission Houston electrode forward scan current density independent variable chloride hydroxide hysteresis tank ABSTRACT The Hanford Site in Richland, WA...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2016, March 6–10, 2016
Paper Number: NACE-2016-7397
... is the repassivation potential for localized corrosion of the material of interest. Corrosion resistant alloys (CRAs) have been widely used in the oil and gas production environments where low alloy steels typically have lower chance to withstand the corrosive conditions. It is highly likely that SCC of CRAs only...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2016, March 6–10, 2016
Paper Number: NACE-2016-7450
... Corrosion Management repassivation potential texas 77084 alloy Rebak alloy 718 corrosion resistance manuscript seawater ?? ? ? ? ? ? ? ? ? ? Pitting Characteristics of Nickel AlloysA Review ? ? ABSTRACT ? ? ?? ? ? INTRODUCTION 1 Paper No. 7450 ©2016 by NACE International. Requests...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2016, March 6–10, 2016
Paper Number: NACE-2016-7708
... Abstract A recently developed framework for predicting localized corrosion and stress corrosion cracking of corrosion-resistant alloys (CRAs) in oil and gas production environments relies on the computation of the repassivation potential and corrosion potential. While the repassivation...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2016, March 6–10, 2016
Paper Number: NACE-2016-7113
... concentration resulted in a decrease in the repassivation potential of IN718. The decrease in repassivation potential was sharp at 400°F. Increasing chloride concentration at 400°F also led to a sharp decrease in the repassivation potential. Similar behavior was observed for 625+. There was no significant...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2016, March 6–10, 2016
Paper Number: NACE-2016-7083
... with a particular focus on the relationship between localized chemistry and repassivation potential. The paper discusses the results of different reactive-transport modeling approaches in understanding local chemistry changes during repassivation, and the use of different in-situ chemical analyses in understanding...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2016, March 6–10, 2016
Paper Number: NACE-2016-7214
..., and that this pH drop is a necessary condition to sustain pitting. The rate at which the protons are produced will be given by equations 1 plus 2: metals & mining riser corrosion repassivation potential Pipeline Corrosion well integrity mechanism materials and corrosion concentration Publication...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2016, March 6–10, 2016
Paper Number: NACE-2016-7227
... the repassivation potential for localized corrosion of steel in various solutions. If the corrosion potential is higher than the repassivation potential, stable localized corrosion is likely to occur. The repassivation process can be considered in terms of a competition between stable oxide-type passive film...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2016, March 6–10, 2016
Paper Number: NACE-2016-7166
... aggressive conditions (i.e., higher temperature and chloride concentration). The repassivation potential decreased with increasing temperature and chloride concentration indicating higher crevice corrosion susceptibility. Crevice corrosion resistance increased in the order alloy N06690 < alloy N06600...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2016, March 6–10, 2016
Paper Number: NACE-2016-7170
... Abstract The crevice corrosion repassivation potential of austenitic S30400 and S31600 stainless steels (SSs) was determined in 0.1 and 1 mol/L NaCl solutions and in 5 mol/L CaCl2 solution at temperatures be-tween 0 and 90°C. The repassivation potential of S30400 SS decreased with increasing...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2015, March 15–19, 2015
Paper Number: NACE-2015-5432
... precipitation repassivation potential corrosion crack growth rate simulant flowline corrosion production chemistry corrosion management solution precipitation specimen crevice corrosion secondary liner tank Effects of Metallurgical Factors and Waste Chemistry on Localized Corrosion and SCC...
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