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Keywords: oxide
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Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2019, March 24–28, 2019
Paper Number: NACE-2019-12914
... Spectroscopy for Chemical Analysis to determine oxide composition, thickness and structure. The resultant corrosion rate of the machined specimens exhibited an inverse temperature dependency, with the rates decreasing by an order of magnitude from the lowest to highest test temperature. Corrosion...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2019, March 24–28, 2019
Paper Number: NACE-2019-13232
... a second order exponential decay to the current transients obtained, which consists of two phases: coverage and thickening. Repassivation occurred quickest in a phosphate environment with presence of bovine serum albumin (BSA) hindering the process as it inhibits access of the oxidant. By using X- ray...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2019, March 24–28, 2019
Paper Number: NACE-2019-13520
... ABSTRACT Nickel base alloys are widely used in high temperature oxidative atmospheres, such as heat exchangers and land-based gas turbines. To mitigate the deleterious effects of oxidation, chromium and aluminum additions, which promote the development of a protective layer of chromia...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2018, April 15–19, 2018
Paper Number: NACE-2018-11012
... inhibitor promoted and stabilized a protective (Fe 3 O 4 ) magnetite oxide on the pipe internals. This investigation confirmed the inhibitor can be an effective replacement for toxic hydrazine. INTRODUCTION The presence of dissolved oxygen in boiler feed water and steam generating systems can present...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2018, April 15–19, 2018
Paper Number: NACE-2018-11418
... of chlorination on the corrosion of 90-10 Cu-Ni alloy in seawater under stagnant conditions. materials and corrosion marine transportation cu-ni alloy flowline corrosion Subsurface Corrosion oxide Pipeline Corrosion riser corrosion corrosion rate permission Houston Chlorination water management...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2018, April 15–19, 2018
Paper Number: NACE-2018-11372
... suggest that oxidation was the primary attack mechanism. INTRODUCTION Global energy demand is projected to rise by 50% in 2050; however the gradual depletion of nonrenewable fossil fuels and the challenges associated with the extraction and refinery of crude oils have started to shift interest away...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2018, April 15–19, 2018
Paper Number: NACE-2018-11199
... US government carbon dioxide Thickness flowline corrosion riser corrosion internal oxidation materials and corrosion renewable energy bar co 2 Pipeline Corrosion Upstream Oil & Gas oxidation Publication Division oxide exposure supercritical co 2 texas 77084 specimen alloy...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2017, March 26–30, 2017
Paper Number: NACE-2017-8989
... oxide, hardness, and copper deposits by using specific polymers, fed to the feedwater, maintains clean heat transfer surfaces and generates passive films within an industrial boiler. This paper will focus on mechanisms that justify this application. INTRODUCTION The major problems associated...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2017, March 26–30, 2017
Paper Number: NACE-2017-9131
... 400-4000 kGy/s (4×10 -7 to 7×10 -6 dpa/s). After exposure, samples were characterized with TEM, EDS, and Raman spectroscopy to determine the effects of radiation on the growth and stability of the oxide films. Samples which were irradiated during exposure had thinner inner oxides compared...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2017, March 26–30, 2017
Paper Number: NACE-2017-9335
... in a medium chloride environment, atmospheric exposure with periodic seawater spray, cyclic alternate immersion, and a typical accelerated atmospheric testing protocol (GM 9540). Test materials included copper alloy, silver, and carbon steel. Oxide analysis was performed using coulometric reduction and used...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2017, March 26–30, 2017
Paper Number: NACE-2017-9426
... ABSTRACT Shot peening is the boiler industry solution to scale exfoliation problems from steamside oxides formed on austenitic stainless steel superheater and reheater tubing in coal-fired power plants. However, relatively little data are publicly available regarding the performance of shot...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2017, March 26–30, 2017
Paper Number: NACE-2017-9717
... at the specimen surface. Nanometersized cavities were observed, associated with grain boundary carbides, in all specimens. Specimens with 30% cold-work consistently exhibited shallow intergranular cracks with oxidized crack flanks and a higher density of cavities ahead of the oxide front. The distribution...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2016, March 6–10, 2016
Paper Number: NACE-2016-7493
... and corrosion riser corrosion flowline corrosion oilfield chemistry well integrity oxidation nickel alloy H2S management resistance composition Boiler chloride Production Chemistry Upstream Oil & Gas oxide texas 77084 permission Chromium Corrosion Management Publication Division exposure...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2016, March 6–10, 2016
Paper Number: NACE-2016-7452
... that ferritic materials such as FeCrAl performed particularly well under the testing conditions developing an oxide film of the surface that was below 300 nm in thickness both for oxygenated and hydrogenated conditions in the temperature range 288-330°C. General corrosion of FeCrAl alloys under light water...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2016, March 6–10, 2016
Paper Number: NACE-2016-7747
...%Cr formed thick Ferich oxides. Initial characterization has focused on light microscopy of polished cross-sections to examine the thickness of the reaction products. Abstract Supercritical CO 2 (sCO 2 ) is being evaluated as a working fluid for a variety of nuclear, fossil, concentrated solar...
Proceedings Papers
Electrochemical Characterization of Ni- & Fe-Based Alloys in Simulated Biomass Environments at 700°C
Publisher: NACE International
Paper presented at the CORROSION 2016, March 6–10, 2016
Paper Number: NACE-2016-7822
... Publication Division cyclic potentiodynamic polarization plot Houston riser corrosion oxide corrosion rate composition alloy manuscript Electrochemical Characterization of Ni- & Fe-Based Alloys in Simulated Biomass Environments at 700°C Obed Villalpando, Juan Carlos Nava and Vilupanur A. Ravi...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2015, March 15–19, 2015
Paper Number: NACE-2015-5431
... metals & mining riser corrosion flowline corrosion subsurface corrosion inspection crack surface permission base material weld fabrication steel requirement materials and corrosion upstream oil & gas oxide government work propagation strain rate mechanical property...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2015, March 15–19, 2015
Paper Number: NACE-2015-5439
... Abstract The corrosion behavior of Co-Cr-W-C weld deposit (UNS R30006) was tested in deaerated, pH adjusted water at 500 0 F for up to 10,000 hours, and subsequently analyzed by X-Ray Diffraction, Auger Electron Spectroscopy, and Electron Spectroscopy for Chemical Analysis to determine oxide...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2015, March 15–19, 2015
Paper Number: NACE-2015-5560
... division mechanism corrosion texas 77084 houston trivalent cation corrosion rate acid fef 2 flowline corrosion subsurface corrosion downstream oil & gas oxide steel permission corrosion mechanism manuscript occluded corrosion cell corrosion resistance A Proposed Mechanism...
Proceedings Papers
Publisher: NACE International
Paper presented at the CORROSION 2015, March 15–19, 2015
Paper Number: NACE-2015-5970
... the mass of accumulated deposits, consisting primarily of iron oxides with trace amounts of other metal oxides, for improved thermal performance or mitigation of active corrosion mechanisms as a result of increased deposit loadings. Deposit removal solvents typically consist of a chelating agent combined...
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