AMPP Store - Individual Conference Papers

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Investigation of the Pitting Corrosion Behavior of Austenitic Stainless Steel UNS S20910 Correlated to its Microstructural Condition

Product Number: 51323-18877-SG

Author: Helmuth Sarmiento Klapper, Julia Ditmann, Clara Herrera, Merlin Seifert

Publication Date: 2023

$20.00

During drilling operations, the components in the drill string including the bottom hole assembly (BHA) remains in permanent contact with the drilling fluid. Therefore, besides non-magnetic properties and high strength the corrosion resistance of the materials utilized for the BHA plays a decisive role specially in applications involving harsh environments. In fact, strain-hardened CrMn-austenitic steels commonly used in directional drilling technology show a high susceptibility to pitting corrosion and environmentally assisted cracking in drilling fluids with a high chloride (Cl-) content at elevated temperatures.

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Investigation on Localized Corrosion Resistance of Nickel-based alloy UNS N07718 under Sour conditions of PuGuang Field simulated Environment

Product Number: 51322-17761-SG

Author: Erfan Abedi Esfahani, Frederick Pessu, Jiong Qian, Anne Neville, Richard Barker

Publication Date: 2022

$20.00

Extremely corrosive environments of today’s oil and gas exploration requires more expensive Corrosion Resistant Alloys (CRAs) to be used for equipment such as tubulars. Material selection for oil and gas wells, especially those containing high hydrogen sulfide (H₂S) and carbon dioxide (CO2) partial pressure, is very crucial. Hydrogen sulfide and carbon dioxide are quite aggressive to the materials used in oil field environments. The material of choice for these oil wells has to be reliable and cost-effective. This makes the material selection process a very complex and difficult task involving both financial and safety risks analysis.

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Investigation on Metal Dusting Corrosion Phenomena Over Incoloy 800

Product Number: 51317--9439-SG

ISBN: 9439 2017 CP

Author: Xiaoyang Guo

Publication Date: 2017

$20.00

UNS N08800 alloy coupons were prepared, polished and oxidized in diluted steam at 540 ºC. Formation of carbon on the surface of the pre-oxidized samples was investigated by exposure to reducing, highly carburizing atmosphere (CO in Ar) at 20 bar and varying temperature (550- 750 ºC).

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Investigation on Release Rates of Vacuum Tight Threaded Junction (VTTJ) Samples Exposed to Ultrapure Water

Product Number: ED22-18439-SG

Author: Caterina Cavallini, Piergiorgio Sonato, Claudia Gasparrini, Francesco Montagner, Roberto Rizzieri, Valentina Zin, Piero Agostinetti, Enrico Miorin, Denis Badocco, Mauro Dalla Palma, Paolo Pastore , Matteo Zaupa, Alessandro Minarello,

Publication Date: 2022

$20.00

The Neutral Beam Test Facility (NBTF) at Consorzio RFX (Padua, Italy) hosts two experiments: MITICA, the 1 MeV full-scale prototype of the ITER Neutral Beam Injector (NBI), and SPIDER, the low energy 100 keV ITER HNB full-size Ion Source [1]. The exploitation of SPIDER and MITICA is necessary to make the future operation of the ITER NBI efficient and reliable; a fundamental aspect to achieving thermonuclear-relevant plasma parameters in ITER.

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Investigation On The Localized Corrosion Performance Of Lean Duplex Stainless Steels In Urban Wastewater Treatment Plants

Product Number: 51322-17756-SG

Author: Audrey Allion, Nicolas Larché, Dominique Thierry, Benoît Emo, Elisabeth Johansson

Publication Date: 2022

$20.00

Wastewater coming from both municipal and industrial activities present corrosive properties toward metals and can in certain cases exceed the tolerances of the most often used stainless steels such as 304L and 316L, thus resulting in the need of superior alloys. The main factors influencing the corrosiveness of the fluids in wastewater treatment plants are high concentration of halides (more specifically chlorides), H₂S, low pH, temperature and their combined action. Corrosiveness of incoming fluids at a municipal wastewater treatment finds its roots in the municipal collection network.

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Investigation on the Mechanism of Corrosion Inhibitors by Contact Angle and Surface Tension

Product Number: 51324-21173-SG

Author: Ru Jia; Duy Nguyen; Boyd Laurent; Jeremy Moloney

Publication Date: 2024

$40.00

Corrosion is common, costly and a prevalent industrial problem in the oil and gas industry. Corrosion inhibitors, which are surfactant-like molecules, adsorb on the metallic surface of a pipe to form a barrier film that inhibits interactions of the pipe surface with corrosive species. Despite the prominence of surfactants as corrosion inhibitors, their adsorption behavior inside a pipeline is not well understood. In this study, continuous corrosion inhibitors were evaluated to correlate corrosion performance testing with contact angle and surface tension studies. Contact angle method was employed in corrosion inhibition studies for surface characterization. Surface tension method was used to determine critical micelle concentration. Contact angle results showed that for the water-soluble continuous corrosion inhibitors such as quaternary ammonium and imidazoline, a monolayer and bilayer were formed on the metal surface as reflected by an increase and then decrease in contact angle. The bilayer further increased the corrosion inhibition efficiency until the critical micelle concentration (CMC) was reached for quaternary ammonium and imidazoline only. However, the mixed quaternary ammonium and imidazoline in the formulation resulted in the maximum contact angle value being at its CMC indicating a compact monolayer formation. The results can provide a helpful guideline for further studying the synergistic effect of corrosion inhibitor mixtures.

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Investigation Study on a Failed Reinforced Thermosetting Resin Pipe

Product Number: MECC23-20059-SG

Author: Khalid M. Almudarra; Nayef M. Al-Anazi; Ibrahim M. Alzahrani; Maryam S. Alramadhan; Reem A. Alalwan; Mirza M. Baig; Haitham K. Aljahani

Publication Date: 2023

$20.00

Finance, workforce, and asset integrity are all major factors played in the global transition initiative from the use of the corrodible metallic materials to the long-lasting non-metallic materials such as the composites. The three monolithic materials, in other words, materials made up of a single type of blocks which are the metallic, ceramic, as well as the polymeric materials have been major fields of interest for centuries. However, a more recent field of promising materials has emerged and been recognized, which is the composite materials.

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Investigations Of Corrosion Protection Of Natural Gas Pipeline Steel By Al Sacrificial Corrosion Coatings Using Electrochemical Techniques

Product Number: 51321-16689-SG

Author: Zineb Belarbi; Leidos Research Support Team; Joseph Tylczak; Margaret Ziomek- Moroz

Publication Date: 2021

$20.00

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Investigations on Cathodic Protection Current Diversion to Carrier Pipe With Vci Gel Annulus Fill In Cased Pipelines

Product Number: 51319-13133-SG

Author: Sujay Math

Publication Date: 2019

$20.00

The oil and gas transmission pipelines are subject to corrosion and are regulated by governing authorities all over the world in view of public safety. Cathodic Protection (CP) is the most common technique used to protect pipelines from corrosion and is a regulatory requirement in the United States. When pipelines are installed inside casing pipe (casing) beneath roadways railroads and other locations the CP is ineffective for the cased section of carrier pipe. Furthermore when the end seals on the casing are compromised the corrosion threat is increased on the cased section of carrier pipe either due to metallic short or due to electrolytic coupling between the carrier pipe and casing. The pipeline operators in the U.S. are mandated by Congress to comply with 49 CFR Part 192 Subpart O to protect the cased carrier pipe from corrosion in High Consequence Areas (HCAs). One common approach used by pipeline operators is to fill the annulus space between casing and carrier pipe with a dielectric fill (wax). The corrosion protection with wax fill assumes that all contaminated water is pushed out of casing annulus with wax however this is not always possible. During the wax installation process contaminated water gets trapped in air pockets and around spacers consequently increasing corrosion risk on the carrier pipe. The existing indirect assessment techniques for pipeline integrity monitoring cannot be used with wax fills due to shielding effects.NACE standard SP0200 recognizes multiphase vapor corrosion inhibitors as one of the viable option for corrosion mitigation of carrier pipes in the casing annulus space. Vapor Corrosion Inhibitors (VCIs) are water based liquids that are installed in gel form in the casing annulus space. This paper explores the use of VCI gels in diverting the CP current to the holidays on the carrier pipe inside a casing and its feasibility for indirect assessment techniques used for pipeline integrity of cased pipelines.

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Investigations on Extrusion Conditions and Their Effects on Aesthetics and Long-Term Performance

Product Number: 51324-21091-SG

Author: Connie Przeslawski

Publication Date: 2024

$40.00

Powder coating extrusion requires the engineer’s consideration of the raw material chemistry and how each extruder parameter affects the powder’s behavior during compounding. Prior investigations reviewed how changes in extrusion parameters and conditions can affect the coating’s aesthetics and performance. New details in powder coating extrusion processing conditions and formulation chemistry allow the engineer to achieve specific coating characteristics. This study will be an update on the recent developments of long-term weathering exposure of high-performance powder coating topcoats on metallic substrates. Along with accelerated weathering (ASTM D4587), scanning electron microscopy (SEM-EDX) and electrochemical impedance spectroscopy (EIS) were employed to examine the coating’s appearance and performance. These findings will contribute to refining the industry’s knowledge to distinguish key parameters for outstanding long-term performance for topcoat systems.

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Investigations on the Cavitation Erosion Behavior of Aluminium Bronze in Seawater

Product Number: 51319-13308-SG

Author: Magali Blumenau

Publication Date: 2019

$20.00

In marine applications aluminium bronze is used extensively. The alloy IACS W24 Cu3/ CuAl10Fe5Ni5-C-GS is the most frequently used alloy for large ship propellers.Under certain conditions the material surface of ship propellers is damaged due to cavitation erosion. Cavitation erosion can be described as a hydrodynamic phenomenon which is related to the formation and collapse of gas bubbles in a liquid. The cyclic mechanical load on the material surface causes plastic deformation and material erosion. The addition of corrosive conditions can increase the material erosion.The aim of the following investigations is the understanding of the cavitation erosion behavior of aluminium bronze in artificial seawater with focus on the role of the complex microstructure.Towards this purpose vibratory cavitation tests in artificial sear water were carried out and the damage of the material surface was observed by scanning electron microscopy (SEM). In addition the corrosion behavior was investigated by exposure tests and registration ofcurrent density-potential-curves.The specimens for the investigations were taken from different parts of a large cast ship propeller: the propeller tip the center and near the hub. Within the propeller there is a significant difference regarding the grain size which is smallest in the tip and four times bigger in the hub. Due to higher strength in the propeller tip in comparison this area shows the smallest cavitation erosion damage.SEM observations showvarious mechanism of damage of the microstructure which includes the Cu-rich α-phase and different intermetallic κ -phases consisting of Al with Ni and Fe.Next step of the investigation was the variation of the standard alloy composition with focus on the Fe/Ni-relation and the Mn-content whereby the composition stays within the limits of the international standard requirements.The different alloy compositions show a significant influence on the formation of the complex microstructure of Aluminium bronze. The specimens with a high Ni-content show mainly the lamellar κ-phases between the α-grains and no round precipitations. Increasing the Fe-content leads to more round iron κ-phases and only a few proportion of eutectoid.The differences of the microstructure influence the mechanical strength and toughness the corrosion resistance and the cavitation erosion resistance of the alloy. The SEM-observations show a selective cavitation erosion and corrosion of the phases.Keywords: cavitation cavitation erosion cavitation corrosion aluminium bronze ship propellers microstructure

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Investigations On The Effect Of Cold Work And Proton Irradiation On The EAC Behavior Of Austenitic Stainless Steels

Product Number: ED22-18528-SG

Author: Matthias Herbst, Renate Kilian, Michael Grimm

Publication Date: 2022

$20.00

All tests in this program have been performed under simulated PWR primary cooling water conditions. The oxide layer development and morphology is addressed in the literature and more intensively being investigated during the last ten years. The oxide layer that is typically observed under these conditions has a double layer structure. The outer layer is composed of large particles of Fe3O4 and the inner layer mainly consists of small particles of FeCr2O4, e.g.

Individual Conference Papers

Association for Materials Protection and Performance