1-20 of 46
Keywords: activation energy
Close
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

Paper presented at the CORROSION 2019, March 24–28, 2019
Paper Number: NACE-2019-12908
... and at several temperature scan rates in order to calculate the apparent activation energy for hydrogen desorption, from which the binding energy for trap sites can be inferred (E b ). INTRODUCTION As higher material strengths are needed for ever increasing deeper wells, then the necessity of understanding...
Proceedings Papers

Paper presented at the CORROSION 2019, March 24–28, 2019
Paper Number: NACE-2019-13392
... of the increase in the activation energy of the electrochemical process underlying CO2 corrosion due to the presence of the corrosion inhibitors led to the development of a modified Butler-Volmer equation. Such an equation describes the retardation in charge transfer rates of the electrochemical reactions...
Proceedings Papers

Paper presented at the CORROSION 2018, April 15–19, 2018
Paper Number: NACE-2018-11537
... to changes in activation energy of the electrochemical process associated with CO 2 corrosion of an API-5L-X65 steel at pH 4.0. Four different model compounds were synthesized in-house, and utilized to achieve this goal. Their molecular structures had the same head group, dimethylbenzylammonium, with four...
Proceedings Papers

Paper presented at the CORROSION 2018, April 15–19, 2018
Paper Number: NACE-2018-11192
... sensitive to the change of temperature. In addition, it is also postulated that the FeS saturation level at the substrate surface (rather than in the bulk), should be taken into consideration when the bulk saturation level of FeS is relatively low. The theoretical kinetic constant and the activation energy...
Proceedings Papers

Paper presented at the CORROSION 2017, March 26–30, 2017
Paper Number: NACE-2017-8909
.... The activation energy and reaction order with respect to DMDS concentration were extracted from the experimental data. The structure, morphology and chemical composition of the corrosion scales were further analyzed using the scanning electron microscope (SEM). INTRODUCTION Processing of so-called...
Proceedings Papers

Paper presented at the CORROSION 2016, March 6–10, 2016
Paper Number: NACE-2016-7258
..., the Zn-Fe-Br complex on the metal surface was not, and continued to grow with time. The film had a lacquer like appearance and appeared to be continuous. The kinetics were parabolic in nature revealing the protective nature of the film. Activation energies for corrosion rates under flowing as well...
Proceedings Papers

Paper presented at the CORROSION 2016, March 6–10, 2016
Paper Number: NACE-2016-7183
... loading at higher frequencies. Production Chemistry frequency Corrosion Inhibition Upstream Oil & Gas activation energy specimen diffusion coefficient concentration Publication Division permission Houston metals & mining H2S management sour environment steel FCGR hydrogen...
Proceedings Papers

Paper presented at the CORROSION 2016, March 6–10, 2016
Paper Number: NACE-2016-7668
..., products exhibit a range of hardness values and chemical resistances. The product must be characterized before conclusions as to the extent of cure can be drawn in the field. activation energy Downstream Oil & Gas texas 77084 permission Publication Division manuscript exposure...
Proceedings Papers

Paper presented at the CORROSION 2015, March 15–19, 2015
Paper Number: NACE-2015-6132
... corrosion humidity activation energy ciscc crack penetration depth canister ciscc initiation chloride concentration stainless steel riser corrosion upstream oil & gas publication division canister surface crack initiation pipeline corrosion materials and corrosion metals & mining...
Proceedings Papers

Paper presented at the CORROSION 2014, March 9–13, 2014
Paper Number: NACE-2014-4479
... parameters from short term fluctuations and filtered long term aging trends. A more refined steel cathodic polarization characterization was introduced and demonstrated by accounting for the effect of electrode potential, as an added term to the nominal activation energy of the cathodic reaction...
Proceedings Papers

Paper presented at the CORROSION 2013, March 17–21, 2013
Paper Number: NACE-2013-2792
... of hydrogen was estimated with simple increase and decrease of cathodic charging current (partial transient). Upstream Oil & Gas activation energy specimen Corrosion Inhibition H2S management Publication Division diffusion coefficient permission diffusion Production Chemistry diffusivity...
Proceedings Papers

Paper presented at the CORROSION 2013, March 17–21, 2013
Paper Number: NACE-2013-2298
... °C, in addition to iron carbide, iron carbonate was also detected. Formation of scattered iron carbonate crystals was studied using SEM. Finally, having the corrosion rate at different temperatures and CO 2 partial pressures, the activation energy of the corrosion process was calculated using the de...
Proceedings Papers

Paper presented at the CORROSION 2011, March 13–17, 2011
Paper Number: NACE-11208
... hydrogen gas. Results show that 1) Some constant loading condition should be needed to get IG cracking under pure hydrogen gas, however activation energy of IG cracking under simulated primary water is almost same as activation energy of IG cracking under dry high purity hydrogen gas. 2) IG cracking...
Proceedings Papers

Paper presented at the CORROSION 2010, March 14–18, 2010
Paper Number: NACE-10227
... condition in Japanese PWR plants, since the primary objective of this study is to understand the influence of material and temperature on oxide films. Temperature is known to be an important environmental factor in LPSCC. Reported thermal activation energies of nickel-based alloy have been scattered due...
Proceedings Papers

Paper presented at the CORROSION 2010, March 14–18, 2010
Paper Number: NACE-10245
... rate during the initiation stage were conducted and also slow strain rate tests for PWSCC susceptibility and activation energy were conducted using dissimilar metal butt welds specimens under simulated PWR primary water conditions. No remarkable difference of activation energy and crack growth rate...
Proceedings Papers

Paper presented at the CORROSION 2009, March 22–26, 2009
Paper Number: NACE-09098
... Corrosion Management diffusion activation energy surface coverage NACE solution fraction 2009 Copyright ©2009 by NACE International. Requests for permission to publish this manuscript in any form, in part or in whole must be in writing to NACE International, Copyright Division, 1440 South creek...
Proceedings Papers

Paper presented at the CORROSION 2008, March 16–20, 2008
Paper Number: NACE-08040
... evident when polymer systems demonstrate variability of the activation energies. The degradation of the polymer can be affected by the environment it will see while in service, both temperature and environmental. To compensate for this, authors studying these methods focus on degradation kinetic...
Proceedings Papers

Paper presented at the CORROSION 2008, March 16–20, 2008
Paper Number: NACE-08492
... of the test environment. On the other hand, stress dependency of the ESCC was identified at 343 °K and 333 °K. It would be mainly caused by increase in the incubation time of the ESCC by decreasing temperature. We also obtained the activation energy of the ESCC growth rate. Apparent activation energy...
Proceedings Papers

Paper presented at the CORROSION 2007, March 11–15, 2007
Paper Number: NACE-07605
... Corrosion Pipeline Corrosion hydraulic fracturing metals & mining Production Chemistry hydrogenated high-temperature water austenitic stainless steel crack growth rate oxide film thickness Corrosion Management activation energy cold work environmental degradation well integrity strength...
Proceedings Papers

Paper presented at the CORROSION 2007, March 11–15, 2007
Paper Number: NACE-07315
... corrosion activation energy carbon dioxide corrosion brine solution oxygen concentration FLOW DEPENDENCE OF CARBON DIOXIDE CORROSION RATES AND THE INTERFERENCE OF TRACE DISSOLVED OXYGEN Douglas John , Brian Kinsella, Stuart Bailey, and Roland De Marco Western Australian Corrosion Research Group...

Product(s) added to cart

Close Modal