Academic literature on the topic 'Activation energies'

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Journal articles on the topic "Activation energies"

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Piskulich, Zeke A., Oluwaseun O. Mesele, and Ward H. Thompson. "Activation Energies and Beyond." Journal of Physical Chemistry A 123, no. 33 (2019): 7185–94. http://dx.doi.org/10.1021/acs.jpca.9b03967.

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Liu, Lei, and Yanhua Lei. "The relationships between activation energies and reaction energies." Current Science 128, no. 8 (2025): 836–39. https://doi.org/10.18520/cs/v128/i8/836-839.

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Grambow, Colin A., Lagnajit Pattanaik, and William H. Green. "Deep Learning of Activation Energies." Journal of Physical Chemistry Letters 11, no. 8 (2020): 2992–97. http://dx.doi.org/10.1021/acs.jpclett.0c00500.

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Kim, Youngsoo, Daniel Dumett Torres, and Prashant K. Jain. "Activation Energies of Plasmonic Catalysts." Nano Letters 16, no. 5 (2016): 3399–407. http://dx.doi.org/10.1021/acs.nanolett.6b01373.

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Gázquez, José L. "Activation Energies and Softness Additivity." Journal of Physical Chemistry A 101, no. 48 (1997): 8967–69. http://dx.doi.org/10.1021/jp971950i.

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Heftrich, Tanja, Mario Weigand, Kafa Al-Khasawleh, et al. "Activation measurements of neutron capture cross sections at various temperatures." EPJ Web of Conferences 260 (2022): 11012. http://dx.doi.org/10.1051/epjconf/202226011012.

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About 50% of the elements heavier than iron are produced during the slow neutron capture process. This process occurs in different stellar sites at various energies. To understand the ongoing nucleosynthesis, the probability of a neutron capture for different temperatures and therefore for different stellar sites is essential. Activation experiments using the 7Li(p,n) reaction as neutron source were performed. At a temperature of kBT = 25 keV the cross sections were determined for 27Al, 37Cl and 41K. A new method was developed to perform activation experiments at even lower temperatures. For a
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Nikolo, M., W. Kiehl, H. M. Duan, and A. M. Hermann. "Flux-creep activation energies inTl2Ba2CaCu2Oxsingle crystals." Physical Review B 45, no. 10 (1992): 5641–44. http://dx.doi.org/10.1103/physrevb.45.5641.

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Shaposhnik, V. A. "Activation energies of ion exchange processes." Сорбционные и хроматографические процессы 22, no. 5 (2022): 622–29. http://dx.doi.org/10.17308/sorpchrom.2022.22/10683.

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Dowdy, D. R. "Meaningful activation energies for complex systems." Journal of Thermal Analysis 32, no. 1 (1987): 137–47. http://dx.doi.org/10.1007/bf01914556.

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Jensen, Finn. "Activation energies and the arrhenius equation." Quality and Reliability Engineering International 1, no. 1 (1985): 13–17. http://dx.doi.org/10.1002/qre.4680010104.

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Dissertations / Theses on the topic "Activation energies"

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Marinaro, Damián. "A study into the effects of fission-fragment damage on activation energies in AG/B12223 tapes." Access electronically, 2003. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20040413.125335/index.html.

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Chick, Michael D. "Feasibility of the Use of Neutron Activation Analysis Techniques in an Underwater Environment." TopSCHOLAR®, 2016. http://digitalcommons.wku.edu/theses/1744.

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Elements when bombarded with neutrons emit a gamma ray that is characteristic of the isotope that underwent a neutron induced nuclear reaction; this is known as neutron activation. The characteristic gamma energy of an isotope can then be detected and recorded. One can then analyze the gamma energies captured and determine the elemental makeup of the sample. This form of analysis can be used in an underwater environment making it potentially a valuable tool for agencies tasked with maritime security of ports and waterways, or clean-up operations. This thesis will focus on the feasibility of ne
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Cai, Yu. "Theory for Fundamental Reactions in Fuel Cells." Case Western Reserve University School of Graduate Studies / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=case1120759456.

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Perreault, Luke J. "Activation Energies of Kerogen in the Eagle Ford Shale Estimated from Rock Eval Pyrolysis Data| Comparison of Methods Using Single and Multiple Heating Rates." Thesis, University of Louisiana at Lafayette, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10615395.

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<p> Source rock kinetics have become increasingly important when defining kerogen maturity and building basin models. Recent studies have suggested that the activation energies (E<sub>a</sub>) needed for these applications can be obtained using one-run open-system pyrolysis with a single heating rate and a fixed frequency factor (A). This method is thought to be faster and cheaper than using multiple heating rates with a varying frequency factor. In this study both methods were used to find the E<sub>a</sub> of seven organic-rich samples from the Eagle Ford Shale. Activation energies for the m
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Bevillon, Emile. "Etude théorique du matériau BaSnO₃, en tant que conducteur protonique pour électrolytes de piles à combustible." Thesis, Châtenay-Malabry, Ecole centrale de Paris, 2009. http://www.theses.fr/2009ECAP0039/document.

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Les travaux effectués ont consisté en une étude théorique du matériau BaSnO3 en tant que matériau conducteur protonique pour électrolytes de piles à combustible. Ces matériaux sont obtenus après un dopage aliovalent préalable qui génère des lacunes d'oxygène sur le sous-réseau d'oxygène du matériau. Ce matériau, placé en milieu humide va s'hydrater, c'est à dire que des molécules d'eau vont se dissocier au sein du matériau. La propriété principale souhaitée pour de tels matériaux est la conductivité protonique. Celle-ci dépend du nombre de porteurs de charges (les hydrogènes ou protons apporté
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Slančík, Tomáš. "Experimentální analýza vlivu chloridových solí v poli neutronů různých energií." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2019. http://www.nusl.cz/ntk/nusl-400595.

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Master’s thesis focuses on the history and current progress in research of molten salt reactors around the world, with an emphasis placed on the properties of molten salts and the problems associated with their use. In relation to the practical part, one chapter is devoted to the creation of input file in the MCNP software. The practical part deals with neutron activation analysis of graphite prism experiment, which is filled with powder NaCl salt. This experiment is focused on the effect of salt on neutron flux with different energy levels. The whole problem was also simulated in the MCNP env
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Zeman, Vojtěch. "Kinetika fotochromních reakcí v tenkých polymerních filmech." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2008. http://www.nusl.cz/ntk/nusl-216218.

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The thesis is aimed to the study of spiropyrane behavior in polymeric matrix of poly(N-vinylkarbazole) (PVK) and poly[2-methoxy-5-(3´,7´-dimethyloctyloxy)-1,4-fenylenvinylene)] (MDMO-PPV). The photochromic transformation of spiropyrane to its isomeric merocyanine form (SPMC) was studied by absorption and emission spectroscopy. It was found, that photochromic reaction is markedly dependent on the environment. In the PVK polymer, which don’t absorb in the visible region, a high yield of photochromic reaction was achieved. Both, absorption and emission spectrums were observed for this system. Fro
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MARTINS, FERNANDO P. G. "Medida do espectro de energia dos neutrons no núcleo do reator IPEN/MB-01." reponame:Repositório Institucional do IPEN, 2006. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11485.

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Ríos, Quiroga Luis Carlos [UNESP]. "Avaliação da relação entre a energia de ativação e a energia útil para diferentes misturas de etanol e gasolina aplicados a motores de ignição por centelha." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/146676.

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Kopecký, Jan. "Určení kinetických parametrů reakcí pomocí DSC měření." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-378413.

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The master thesis deals with DSC measurments a calculation of kinetic parameters. In the theoretical part, iron alotropy is briefly described, followed by a description of the DSC analysis itself. The thesis also includes division and derivation of isoconversional methods for calculating the activation energy. In the experimental part, a series of measurments is perfomed on pure iron prepared by Cold Spray method. In the paper the influence of deformation on the Curie temperature of the magnetic transformation in -Fe and transformation > is investigated. The activation energy is calculated f
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Books on the topic "Activation energies"

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Varada, Raj Subramanium, Walker K. P, and United States. National Aeronautics and Space Administration., eds. Stress versus temperature dependent activation energies in creep. NASA, 1990.

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Denisov, E. T. Handbook of antioxidants: Bond dissociation energies, rate constants, activation energies, and enthalpies of reactions. 2nd ed. CRC Press, 2000.

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Denisov, E. T. Handbook of antioxidants: Bond dissociation energies, rate constants, activation energies, and enthalpies of reactions. CRC Press, 1995.

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Soskin, Julie. Activating energies. Cosminar, 1993.

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Denisov, Evguenii T. Handbook of Antioxidants: Bond Dissociation Energies, Rate Constants, Activation Energies, and Enthalpies of Reactions. Taylor & Francis Group, 2019.

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Denisov, Evguenii T. Handbook of Antioxidants: Bond Dissociation Energies, Rate Constants, Activation Energies, and Enthalpies of Reactions. Taylor & Francis Group, 2019.

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Denisov, Evguenii T. Handbook of Antioxidants: Bond Dissociation Energies, Rate Constants, Activation Energies, and Enthalpies of Reactions. Taylor & Francis Group, 2019.

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Denisov, Evguenii T. Handbook of Antioxidants: Bond Dissociation Energies, Rate Constants, Activation Energies, and Enthalpies of Reactions. Taylor & Francis Group, 2019.

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Handbook of antioxidants: Bond dissociation energies, rate constants, activation energies and enthalpies of reactions. CRC, 1995.

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Activation Energies of Global Reactions in Laminar Flame Propagation. Creative Media Partners, LLC, 2021.

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Book chapters on the topic "Activation energies"

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Busch, Michael, Elisabet Ahlberg, and Itai Panas. "Activation Energies in Computational Chemistry-A Case Study." In Rate Constant Calculation for Thermal Reactions. John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118166123.ch4.

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Warshel, Arieh. "Activation Free Energies of Enzymatic Reactions; Simulations and Experiments." In Structure, Dynamics and Function of Biomolecules. Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-71705-5_14.

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Šepa, Darko B. "Energies of Activation of Electrode Reactions: A Revisited Problem." In Reviews of Physiology, Biochemistry and Pharmacology. Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-1-4613-0327-5_1.

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Jakubowski, W., J. Qarbarczyk, and M. Wasiucionek. "Activation Energies of the Electrical Conductivity of Doped Beta″ Alumina Samples." In Solid State Batteries. Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-5167-9_32.

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Boebinger, G. S., A. M. Chang, H. L. Stormer, and D. C. Tsui. "Magnetic Field Dependence of Activation Energies in the Fractional Quantum Hall Effect." In Quantum Hall Effect: A Perspective. Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-010-9709-3_24.

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Jones, William D., R. Martin Chin, Lingzhen Dong, Simon B. Duckett, and Edward T. Hessell. "The Role of Bond Energies in Hydrocarbon Activation by Transition Metal Centers." In Energetics of Organometallic Species. Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2466-9_4.

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Wakabayashi, J. "Activation Energies of the Fractional Quantum Hall Effect in GaAs/ AlGaAs Heterostructures." In Springer Series in Solid-State Sciences. Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-83114-0_24.

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Alobeedallah, Hadeel, Bruce A. Cornell, and Hans Coster. "Measuring Activation Energies for Ion Transport Using Tethered Bilayer Lipid Membranes (tBLMs)." In Methods in Molecular Biology. Springer US, 2021. http://dx.doi.org/10.1007/978-1-0716-1843-1_6.

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Calleja, Mark, and Martin T. Dove. "Calculating Activation Energies in Diffusion Processes Using a Monte Carlo Approach in a Grid Environment." In Computational Science - ICCS 2004. Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-25944-2_63.

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Kim, P., T. Larssen, M. Tangstad, and R. Kawamoto. "Empirical Activation Energies of MnO and SiO2 Reduction in SiMn Slags Between 1500 and 1650 °C." In Applications of Process Engineering Principles in Materials Processing, Energy and Environmental Technologies. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-51091-0_46.

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Conference papers on the topic "Activation energies"

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Pahari, Silabrata, Parth Shah, Chi Ho Lee, and Joseph Sang-Il Kwon. "A Hybrid Modeling Framework for Catalytic Systems: Sensitivity Analysis and Estimation of Activation Energies." In 2024 American Control Conference (ACC). IEEE, 2024. http://dx.doi.org/10.23919/acc60939.2024.10644671.

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Vogt, Helen, and Markus O. Speidel. "Effect of Temperature on Crack Growth Rates of Stress Corrosion Cracks in Metal Alloys Exposed to Water." In CORROSION 1996. NACE International, 1996. https://doi.org/10.5006/c1996-96265.

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Abstract The effect of temperature on stress corrosion crack growth rates was studied using four commercial alloys: An Al-Mg-Zn alloy (7000-Series), an Al-Cu alloy (2000-Series), a Mg-rare earth alloy and a Zr 2.5% Nb alloy. Stress Corrosion crack growth rate data were obtained using fracture mechanic specimens which were tested in high purity water in the temperature range of -10°C to 320°C, depending on the alloy. Attention was directed towards region II behaviour, where the crack propagation rate is independent of stress intensity but sensitive to test temperature. The experimental activati
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Masamura, Katsumi, Shigeaki Yamamoto, and Iwao Matsushima. "Pitting Corrosion Resistance of High Alloy OCTG in Ferric Chloride Solution." In CORROSION 1986. NACE International, 1986. https://doi.org/10.5006/c1986-86172.

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Abstract The effects of alloying elements and precipitated phases on the corrosion rate of high alloy OCTG in the ferric chloride solution have been evaluated. The corrosion rate of Fe-Cr-Ni-Mo alloys without precipitated phases e.g. carbides and sigma phase, can be estimated from the alloy composition using the following equation: log(C.R.)=−0.144×PRE−7690/(273+T)+28.6where, C.R. is the corrosion rate in g/m2/hr; PRE is Cr+3Mo+16N in percent and T is the test temperature in °C. The activation energies of the ferric chloride test for Fe-Cr-Ni-Mo alloys are almost the same regardless of PRE or
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Scully, John R., and George A. Young. "The Effects of Temper, Test Temperature, and Alloyed Copper on the Hydrogen-Controlled Crack Growth Rate of an Al-Zn-Mg-(Cu) Alloy." In CORROSION 2000. NACE International, 2000. https://doi.org/10.5006/c2000-00368.

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Abstract The hydrogen embrittlement controlled stage II crack growth rate of AA 7050 (6.1% wt. Zn, 2.1% wt. Mg, 2.2% wt. Cu) was investigated as a function of temper and alloyed copper level in a humid air environment at various temperatures. Three tempers representing the underaged, peak aged, and overaged conditions were tested in 90% relative humidity (RH) air at temperatures between 25 and 90 °C. At all test temperatures, an increased degree of aging (from underaged to overaged) produced slower stage II crack growth rates. The stage II crack growth rate of each alloy and temper displayed A
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Wu, Xiaodan, and Brian Gleeson. "Compositional Factors Affecting the High-Temperature Degradation Behavior of Alloys Exposed to Relatively High PS2 – Low PO2 Atmospheres." In CORROSION 2013. NACE International, 2013. https://doi.org/10.5006/c2013-02850.

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Abstract The sulfidation rates of most metals and alloys are generally 104–106 times higher than their oxidation rates, depending on temperature (i.e., the activation energies are different). As a result, the maximum temperature for long-term service of metallic materials exposed to high-PS2 / low-PO2 environments, such as those associated with low-NOx combustion systems, is generally considered to be about 600˚C (much lower than for oxidizing environments). However, as determined in this study, the extent of sulfidation attack of a given alloy is critically dependent on the amounts of Cr and
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Lloyd, B., A. G. Crouch, J. M. Ferguson, and M. I. Maiming. "Real-Time Monitoring of Steel Corrosion Using a Novel Expansion-Based Technique." In CORROSION 1989. NACE International, 1989. https://doi.org/10.5006/c1989-89022.

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Abstract A new technique for monitoring atmospheric corrosion of iron has been developed which utilises the volume expansion associated with corrosion of multiple specimens to enable fast and sensitive determinations of real-time corrosion rates. Results are presented to illustrate several applications of this technique. These include the determination of activation energies for rusting and the influence of restraining stress, the effects of humidity and rainfall and the study of high atmospheric corrosion rate episodes due to periodic inland transport of sea-salt. These examples illustrate se
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Srinivasa Rao, A. "Fundamental Investigation on the Kinetics of the Rust Removal by Hydroxyethane Diphosphonic Acid (HEDPA)." In CORROSION 2001. NACE International, 2001. https://doi.org/10.5006/c2001-01557.

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Abstract In order to evaluate the adaptability of hydroxyethane diphosphonic acid (HEDPA) as an environmentally benign alternative rust removal agent, a systematic investigation is being carried out. The effectiveness of HEDPA was thoroughly investigated as a function of acid concentration in the range 2-100 vol.% and at different temperatures in the temperature range 27 - 60°C. The results suggest that the acid HEDPA is very effective in the rust removal process. The rate of rust removal by HEDPA is strongly dependent on the acid concentration and the solution temperature. Once an optimum thr
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Was, G. S., S. Teysseyre, J. McKinley, and Z. Jiao. "Corrosion of Austenitic Alloys in Supercritical Water." In CORROSION 2005. NACE International, 2005. https://doi.org/10.5006/c2005-05397.

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Abstract The purpose of this study was to determine the corrosion behavior of austenitic alloys in pure supercritical water and to gain a better understanding of the mechanisms. Austenitic stainless steel alloys 304L and 316L and nickel-base alloys 625 and 690 were exposed in deaerated supercritical water over the temperature range 400°C to 550°C. Exposure experiments resulted in the formation of a two-layer oxide on 304L and 316L in which the outer layer is porous magnetite and the inner layer is a denser iron-chromium spinel. In 690 the outer layer is iron-rich and the inner layer is compose
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Lee, Joon H., and Hatem A. Elayat. "A Probabilistic Performance Assessment Model for General Corrosion of Alloy 22 for High Level Nuclear Waste Disposal Container." In CORROSION 2004. NACE International, 2004. https://doi.org/10.5006/c2004-04699.

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Abstract Alloy 22 (UNS N06022) is the candidate material for the corrosion barrier of the double-wall waste package (WP) for the disposal of high-level nuclear waste at the proposed Yucca Mountain repository. A probabilistic temperature-dependent general corrosion model for the WP outer barrier (WPOB) was developed based on the 5-year weight-loss measurements of Alloy 22 crevice samples. The 5-year corrosion rate distribution is represented by a Weibull distribution, with scale factor s = 8.88, shape factor b = 1.62, and location factor l = 0. The temperature-dependence of the general corrosio
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Trillo, Elizabeth, Brian Somerday, James Dante, et al. "Hydrogen Permeation and Binding Energy Study on OCTG High Strength Steel." In CORROSION 2019. NACE International, 2019. https://doi.org/10.5006/c2019-12908.

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Abstract Oil Country Tubular Goods (OCTG) high strength steels are susceptible to hydrogen assisted cracking (HAC) due to hydrogen ingress as a result of exposure to environmental conditions (cathodic protection (CP) and/or H2S environments) and as such are prone to failure. In order to address the potential cracking susceptibility, a study was performed to understand fundamental parameters such as steady state hydrogen permeation flux, hydrogen concentrations and hydrogen trap binding energies of the high strength steel under charging conditions. Electrochemical permeation testing was perform
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Reports on the topic "Activation energies"

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Duckworth, Robert. Activation Energies of Harvested Boston Insulated Wire and Okonite Cable Materials. Office of Scientific and Technical Information (OSTI), 2018. http://dx.doi.org/10.2172/1649646.

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Wicks, G. G. Chemical Durability of SRP Waste Glass - Time Temperature Dependence and Activation Energies for Leaching in Various Leachants. Office of Scientific and Technical Information (OSTI), 2001. http://dx.doi.org/10.2172/786668.

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