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Keywords: concentration
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Proceedings Papers

Paper presented at the CORROSION 2021, April 19–30, 2021
Paper Number: NACE-2021-16602
... Shimotsuga-gun, Tochigi, 329-0105 Japan ABSTRACT The combination of phosphorus and zinc is mainly used as the carbon steel corrosion inhibitor for cooling water systems in the industrial plants such as petroleum refining or petrochemical plants. Moreover, treatments with high-concentration phosphorous...
Proceedings Papers

Paper presented at the CORROSION 2021, April 19–30, 2021
Paper Number: NACE-2021-16656
... of impurity concentrations in supercritical CO 2 condition (8 MPa and 35°C). The corrosion rate of samples was determined by weight loss measurements. The surface morphology and the composition of the corrosion product layers were analyzed by using surface analytical techniques (SEM and EDS). Localized...
Proceedings Papers

Paper presented at the CORROSION 2021, April 19–30, 2021
Paper Number: NACE-2021-16443
... = 4.5) at 25°C. Linear polarization resistance (LPR) measurements were conducted to determine the corrosion rate (CR) over a wide range of CI concentrations, from which surface saturation concentration and surface coverage values were extracted. Kinetic parameters for adsorption (kA, kD, and KAD) were...
Proceedings Papers

Paper presented at the CORROSION 2021, April 19–30, 2021
Paper Number: NACE-2021-16887
...) technique was used to evaluate the environmental hydrogen embrittlement susceptibilities (EHE) of the materials by in-situ charging of hydrogen at a cathodic potential of -1.2VSCE. Microstructural characterization was performed using TEM. Stress and hydrogen concentration distributions at the time...
Proceedings Papers

Paper presented at the CORROSION 2021, April 19–30, 2021
Paper Number: NACE-2021-16927
...)/ piping. Despite significant corrosion and wear resistance, the performance of Ni-P coatings is inhibited due to fracture and cracking by the impact of erosive particles in the process streams. This study involves the preparation of graphene incorporated Ni-P coatings by adding various concentrations...
Proceedings Papers

Paper presented at the CORROSION 2021, April 19–30, 2021
Paper Number: NACE-2021-16864
... corrosion inhibitor oil phase composition responsibility retrieval system fraction permission water volume fraction means partition coefficient publication corrosion management concentration water phase rights apparent partition coefficient 16864 Partitioning of Multi-Component Surfactants...
Proceedings Papers

Paper presented at the CORROSION 2021, April 19–30, 2021
Paper Number: NACE-2021-16465
... concentration. Most closed loops have a chloride concentration less than 50ppm. Typical temperatures encountered in closed loops vary, but in general temperatures are 35 – 80°C. Closed loops are constructed mostly with carbon steel, stainless steel, and copper alloys, however the use of aluminum alloys...
Proceedings Papers

Paper presented at the CORROSION 2021, April 19–30, 2021
Paper Number: NACE-2021-16531
.... Results show iron carbonate deposition during acid stimulation is a corrosion induced scale issue. A high concentration of iron can release from tubular due to severe corrosion during acid injection, especially for the high-temperature reservoir. Minor iron carbonate could deposit at the initial stage...
Proceedings Papers

Paper presented at the CORROSION 2021, April 19–30, 2021
Paper Number: NACE-2021-16726
... and corrosion well integrity upstream oil & gas fast pyrolysis ampp retrieval system biomass rights concentration steel biomass sample examination characterization compound composition renewable energy permission corrosivity means u-bend sample material protection responsibility...
Proceedings Papers

Paper presented at the CORROSION 2021, April 19–30, 2021
Paper Number: NACE-2021-16964
... Abstract The effect of NaCl concentration (non-ideality) was investigated on the solubility of FeCO 3 layer. After a layer of FeCO 3 was formed on a gold coated crystal, NaCl was incrementally added into the solution and the mass change of the FeCO 3 layer was measured...
Proceedings Papers

Paper presented at the CORROSION 2019, March 24–28, 2019
Paper Number: NACE-2019-13118
... (figure 3) for a short time (24-72h) at a material specific temperature range. At the end of the test the specimen is examined for weight loss and localized attack (Figure 4). The basic concept behind this test is the application of high potential using a chemical potentiostat in an acidic concentrated...
Proceedings Papers

Paper presented at the CORROSION 2019, March 24–28, 2019
Paper Number: NACE-2019-13176
... within pulp and papermaking. NH3 is known to corrode copper compounds at high ppb concentrations and high humidity. Ammonia corrosion is not a primary concern for electrical equipment in pulp and paper mills as the acidic gases are significantly more corrosive. AIR QUALITY STANDARDS ANSI(1) and ISA(2...
Proceedings Papers

Paper presented at the CORROSION 2019, March 24–28, 2019
Paper Number: NACE-2019-13157
...-, CH+, and COH - are the concentrations (mol/L) of CO2, carbonic acid, bicarbonate ion, carbonate ion, hydrogen ion, and hydroxide ion, respectively. The equilibrium constants, K, are a function of the temperature and are available in the open literature. Since the solution cannot have a net charge...
Proceedings Papers

Paper presented at the CORROSION 2019, March 24–28, 2019
Paper Number: NACE-2019-13163
... production of H2S in production wells. This study investigates the stability and efficacy of commonly used oil and gas biocides in a soured environment to determine their suitability for use in souring remediation. Experiments were designed to measure biocide concentration as a function of time...
Proceedings Papers

Paper presented at the CORROSION 2019, March 24–28, 2019
Paper Number: NACE-2019-13125
... with mixture velocity of 4.5 and 7 m/s at solids concentration of about 20 v/v% and dissolved oxygen concentration of 1.0 ppm. Our proposed novel modeling approach results were found to be in reasonable agreement with measured data, and can easily be integrated with existing hydrodynamic models or tools...
Proceedings Papers

Paper presented at the CORROSION 2019, March 24–28, 2019
Paper Number: NACE-2019-13158
... that are often misleading and inaccurate due to basic assumption of the test and users attempts to stream line the method. Other techniques are used to measure bacteria concentrations include adenosine triphosphate (ATP) and nucleic acid testing. However, these methods also have drawbacks including accuracy...
Proceedings Papers

Paper presented at the CORROSION 2019, March 24–28, 2019
Paper Number: NACE-2019-13181
.... The material presented and the views expressed in this paper are solely those of the author(s) and are not necessarily endorsed by the Association. (2) ASTM International, 100 Barr Harbor Dr., West Conshohocken, PA 19428-2959. Determining the concentration of microbes on a coupon The biofilm was homogenized...
Proceedings Papers

Paper presented at the CORROSION 2019, March 24–28, 2019
Paper Number: NACE-2019-13195
... & mining riser corrosion reactor materials and corrosion Upstream Oil & Gas flowline corrosion Subsurface Corrosion concentration inlet texas 77084 Publication Division Pipeline Corrosion well integrity corrosion rate st reactor Corrosion Testing Houston weight loss analysis...
Proceedings Papers

Paper presented at the CORROSION 2019, March 24–28, 2019
Paper Number: NACE-2019-13110
... elevated concentrations of acetate (> 2,000 mg/l). Weld comparisons of the original header weld metal vs. the newly failed header weld metal showed differences in chemical compositions. As part of the investigation to determine the cause of the failure, laboratory and field coupons were created from...

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