Готові списки джерел за темами / Gradient coatings

Зміст

  1. Статті в журналах
  2. Дисертації
  3. Книги
  4. Частини книг
  5. Тези доповідей конференцій
  6. Звіти організацій

Добірка наукової літератури з теми "Gradient coatings"

Автор: Grafiati
Опубліковано: 30 травня 2022
Оновлено: 31 липня 2025

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Статті в журналах з теми "Gradient coatings"

1

Szparaga, Łukasz, Przemysław Bartosik, Adam Gilewicz, Katarzyna Mydłowska, and Jerzy Ratajski. "Optimisation of Mechanical Properties of Gradient Zr–C Coatings." Materials 14, no. 2 (2021): 296. http://dx.doi.org/10.3390/ma14020296.

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Анотація:
One of the key components of the designing procedure of a structure of hard anti-wear coatings deposited via Physical Vapour Deposition (PVD) is the analysis of the stress and strain distributions in the substrate/coating systems, initiated during the deposition process and by external mechanical loads. Knowledge of residual stress development is crucial due to their significant influence on the mechanical and tribological properties of such layer systems. The main goal of the work is to find the optimal functionally graded material (FGM) coating’s structure, composed of three functional layer
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2

Szparaga, Łukasz, Przemysław Bartosik, Adam Gilewicz, Katarzyna Mydłowska, and Jerzy Ratajski. "Optimisation of Mechanical Properties of Gradient Zr–C Coatings." Materials 14, no. 2 (2021): 296. http://dx.doi.org/10.3390/ma14020296.

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Анотація:
One of the key components of the designing procedure of a structure of hard anti-wear coatings deposited via Physical Vapour Deposition (PVD) is the analysis of the stress and strain distributions in the substrate/coating systems, initiated during the deposition process and by external mechanical loads. Knowledge of residual stress development is crucial due to their significant influence on the mechanical and tribological properties of such layer systems. The main goal of the work is to find the optimal functionally graded material (FGM) coating’s structure, composed of three functional layer
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3

Maulet, M., B. K. Rakhadilov, W. Wieleba, and Zh B. Sagdoldina. "UTILIZING DETONATION SPRAYING IN THE PROCESS OF FORTIFYING COMPONENTS WITHIN POWER PLANT TECHNOLOGY." Bulletin of Shakarim University. Technical Sciences, no. 1(13) (March 29, 2024): 347–52. http://dx.doi.org/10.53360/2788-7995-2024-1(13)-43.

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Анотація:
The article addresses challenges related to enhancing the performance characteristics of power plant components. Research conducted by different authors demonstrates that when aiming to enhance the operational qualities of these parts, detonation spraying yields superior outcomes owing to its low porosity, high strength, and strong adhesion of the coatings produced. Also benefits of employing Ni-Cr-Al-based coatings as high oxidation resistant coating. The study involves the acquisition of Ni-Cr-Al-based gradient structured coatings using detonation spraying techniques. Investigated their phas
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4

Li, Chenchen, Xuefeng Yang, Shouren Wang, Yanjun Wang, and Jinlong Cao. "Preparation of WC Reinforced Co-Based Alloy Gradient Coatings on a H13 Mold Steel Substrate by Laser Cladding." Coatings 10, no. 2 (2020): 176. http://dx.doi.org/10.3390/coatings10020176.

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Анотація:
H13 die steel often fails as a result of physical and chemical effects such as wear, erosion and cyclic stress. Accordingly, the study evaluates Co-based gradient coating on an H13 steel featuring a stress-relieving effect. Scanning electron microscope and X-ray diffraction were used to analyze the microstructure and phase of the coatings. A microhardness tester and friction and wear tester were used to compare the hardness and wear resistance of the coatings and the substrate, and the wear morphology was observed. A pendulum impact test was used to compare the impact resistance of the coating
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5

Su, Ya Yu, Xiao Lei Li, Hui Jie Tang, Zhi Hao Zhao, and Jian He. "Thermal Shock Behavior and Bonding Strength of MoSi2-BaO-Al2O3-SiO2 Gradient Porous Coating with Polymethyl Methacrylate Addition for Porous Fibrous Insulations." Solid State Phenomena 281 (August 2018): 493–98. http://dx.doi.org/10.4028/www.scientific.net/ssp.281.493.

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Анотація:
In order to improve the thermal shock behavior of high temperature resistant coating on porous fibrous referactory insulations, the MoSi2-BaO-Al2O3-SiO2(MoSi2-BAS) gradient porous coatings were designed by preparing a dense surface layer and a porous bonding layer with the method of brushing and subsequent sintering at 1773 K. The porous bonding layer was obtained by adding polymethyl methacrylate (PMMA) as pore former. As the content of PMMA increases, the MoSi2-BAS coatings changed from a dense structure into a gradient porous structure. The interface bonding strength and thermal shock resis
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6

M. Maulet, B. Rakhadilov, M. Rutkowska-Gorczyca, Zh. Sagdoldina, and D. Buitkenov. "ASSESSMENT OF NI-CR-AL HIGH-TEMPERATURE DETONATION COATINGS UNDER OPERATIONAL CONDITIONS." Bulletin of Toraighyrov University. Energetics series, no. 4.2024 (December 30, 2024): 231–41. https://doi.org/10.48081/wmcr9023.

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Анотація:
This study evaluates the high-temperature durability and oxidation resistance of homogeneous and gradient Ni-Cr-Al detonation coatings applied to 12Kh1MF steel substrates. Samples were exposed to operational conditions in a power plant for two weeks, simulating high-temperature industrial environments. The research utilizes X-ray diffraction (XRD) and scanning electron microscopy (SEM) to analyze phase stability, surface morphology, and structural integrity of the coatings before and after thermal exposure. Findings reveal that gradient coatings outperform homogeneous ones, demonstrating super
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7

WANG, TAO, NING WANG, YANG LI, HAO WANG, JIE TANG, and YUNSHAN WANG. "STUDY ON PREPARATION TECHNOLOGIES OF THERMAL BARRIER COATINGS." Surface Review and Letters 24, no. 04 (2016): 1730004. http://dx.doi.org/10.1142/s0218625x17300040.

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Анотація:
Thermal barrier coatings (TBCs) is one of the main key technology for the high-pressure turbine blades which are the main components of the high-performance aerospace engines. It offers protection for underline metallic components from corrosion, oxidation and localized melting by insulating the metal from hot gases in the engine core. The properties and lifetime of TBCs are greatly influenced by the preparation technology, which includes plasma spraying (PS), physical vapor deposition (PVD) and laser re-melting (LM). In this paper, three technologies used to prepare the TBCs are reviewed. Res
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8

Rakhadilov, Bauyrzhan, Laila Sulyubayeva, Meruyert Maulet, Zhuldyz Sagdoldina, Dastan Buitkenov, and Ainur Issova. "Investigation of High-Temperature Oxidation of Homogeneous and Gradient Ni-Cr-Al Coatings Obtained by Detonation Spraying." Coatings 14, no. 1 (2023): 11. http://dx.doi.org/10.3390/coatings14010011.

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Анотація:
The high-temperature oxidation of homogeneous and gradient coatings based on Ni-Cr-Al obtained by detonation spraying is investigated. To assess the resistance to high-temperature oxidation of Ni-Cr-Al coatings, cyclic tests were carried out at a temperature of 1000 °C for 50 cycles. The assessment of high-temperature oxidizing ability was carried out by measuring the weight gain of samples after each cycle. After high-temperature oxidation tests, the morphology and chemical composition of the coating structure in the cross-section were investigated using SEM/EDS. The phase composition of the
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9

He, Dai Hua, Qian Zhao, Chang Bao Wang, et al. "Sol-Gel Derived Gradient Biocoatings on Titanium Alloy." Applied Mechanics and Materials 80-81 (July 2011): 426–30. http://dx.doi.org/10.4028/www.scientific.net/amm.80-81.426.

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The bioceramic hydroxyapaptie (HA) is frequently used as coat in titanium medical implants improving bone fixation and thus increasing a lifetime of the implant. However, its joining to the titanium alloy is not satisfactorily good. The aim of this work is to produce TiO2and HA gradient coatings on Ti6Al4V alloy to improve the interface joining. Compared the microstructures of cross section of Ti6Al4V-HA coating and Ti6Al4V-TiO2/HA gradient coatings. HA coatings were obtained by sol-gel method with sol solutions prepared from calcium nitrate tetrahydrate and triethyl phosphate as the calcium a
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10

Sagdoldina, Zh B., D. R. Baizhan, Y. Y. Kambarov, and K. Torebek. "Obtaining functional-gradient Ti-HA coatings by detonation spraying." Bulletin of the Karaganda University. "Physics" Series 107, no. 3 (2022): 43–51. http://dx.doi.org/10.31489/2022ph3/43-51.

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Анотація:
Functional-gradient titanium/hydroxyapatite (TiHA) coatings were obtained using detonation spraying technology to improve the structure and mechanical properties. To obtain functional-gradient coatings, pulsed energy sources are best suited, namely, detonation spraying, in which the energy of the explosion of gas mixtures is used as a source of pulsed action. By controlling the modes of detonation spraying, it is possible to vary the temperature and rate of coating deposition; accordingly, it is possible to obtain a certain structuralphase structure of the coatings. The structural-phase state
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Дисертації з теми "Gradient coatings"

1

Heidari, Maryam. "3D modelling of functionally graded coatings." Thesis, University of Aberdeen, 2014. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=215382.

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Анотація:
The purpose of this study is to investigate the behaviour of functionally graded materials in the coating design through analytical and numerical work. Functionally graded materials are advanced composite materials formed from two or more constituents with a continuously varying composition, which results in a continuous variation of material properties from one surface of the material to the other. The concept of functionally graded material is actively explored in coating design where structural and/or functional failures of the coating can happen due to a mismatch between the material prope
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2

Vaidyaraman, Sundararaman. "Carbon/carbon composites by forced flow-thermal gradient chemical vapor infiltration (FCVI) process." Diss., Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/10028.

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3

Bell, Bryan Frederick. "Functionally graded, multilayer diamondlike carbon-hydroxyapatite nanocomposite coatings for orthopedic implants." Available online, Georgia Institute of Technology, 2004:, 2004. http://etd.gatech.edu/theses/available/etd-06072004-131058/unrestricted/bell%5Fbryan%5Ff%5F200405%5Fms.pdf.

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4

Bell, Bryan Frederick Jr. "Functionally graded, multilayer diamondlike carbon-hydroxyapatite nanocomposite coatings for orthopedic implants." Thesis, Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/7962.

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5

Dong, Shuhong. "Effects of Thermal Gradient and Cyclic Oxidation on the Delamination and Lifetime of High Temperature Protective Coatings." Thesis, Université d'Ottawa / University of Ottawa, 2018. http://hdl.handle.net/10393/38334.

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Thermal barrier coatings have been widely used to provide thermal protection to components in the hot section of gas turbines. This research focuses on two influencing factors on coating behavior: thermal gradient and cyclic oxidation. The delamination mechanics under thermal gradient is analyzed, taking thermally grown oxide into consideration. Coatings experience thermal gradients at different stages during actual service flight. One is due to engine power shut down when landing and the other due to internal cooling of the substrate. Thermally grown oxide (TGO) also acts as a critical facto
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6

Корнієнко, Анатолій Олександрович. "Формування триботехнічних властивостей композиційних електролітичних покриттів на основі нікелю створенням градієнтних структур. Автореферат дисертації на здобуття наукового ступеня кандидата технічних наук". Thesis, Національний авіаційний університет, 2007. http://er.nau.edu.ua/handle/NAU/35678.

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Анотація:
Дисертацію присвячено розробленню градієнтних композиційних електролітичних покриттів зміцнених макро- та наночастинками з керованими триботехнічними властивостями. Проведено аналітичні дослідження напружено-деформованого стану одно- та багатошарових градієнтних КЕП, навантажених силами тертя. Експериментально встановлено оптимальні щодо зносостійкості будову та режими нанесення КЕП Ni-SiC. Визначено вплив кількості та розміру частинок наповнювача на триботехнічні властивості покриттів. Проведенням експериментальних досліджень впливу градієнта будови КЕП на триботехнічні властивості встановлен
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7

Гуменюк, Ігор Анатолійович. "Триботехнічні властивості сталі 12Х18Н10Т, поверхнево модифікованої комбінованими покриттями". Thesis, Національний авіаційний університет, 2018. http://er.nau.edu.ua/handle/NAU/36124.

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Гуменюк І.А. Триботехнічні властивості сталі 12Х18Н10Т, поверхнево модифікованої комбінованими покриттями. – На правах рукопису. Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю: 05.02.04 – тертя та зношування в машинах (13 – Механічна інженерія). Національний авіаційний університет, МОН України, Київ, 2018. Дисертаційна робота присвячена вирішенню актуального науково-технічного завдання підвищення зносостійкості поверхневих шарів корозійностійкої сталі 12Х18Н10Т шляхом формування зносостійких комбінованих дифузійних, електроіскрових та композиційних електро
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8

Kim, Tae-Young. "Novel sol-gel titania-based hybrid organic-inorganic coatings for on-line capillary microextraction coupled to high-performance liquid chromatography." [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001833.

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9

Shi, Jun. "On thermal mismatch and thermal gradients and the failure of thermal barrier coatings." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file 2.35 Mb., 123 p, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:3221078.

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10

Shesham, Vaishnavi. "Assessing Diphenyl Polyenes as PH Sensitive Colorimetric Probes of Proton Gradients in Polymer Coatings." University of Dayton / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1620133505202436.

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Книги з теми "Gradient coatings"

1

N, Lee Kang, Miller Robert A. 1947-, and NASA Glenn Research Center, eds. Thermal conductivity and thermal gradient cyclic behavior of refractory silicate coatings on SiC/SiC ceramic matrix composites. National Aeronautics and Space Administration, Glenn Research Center, 2001.

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2

SICMAC, Summer School on Layered Functional Gradient Ceramics and Thermal Barrier Coatings (2006 Mahón Spain). Layered, functional gradient ceramics, and thermal barrier coatings: Design, fabrication and applications : proceedings of the SICMAC summer school on layered, functional gradient ceramics, and thermal barrier coatings held in Maó, Menorca Island (Spain) on June 11-16, 2006. Trans Tech Publications Ltd., 2007.

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3

A, Miller Robert, and Lewis Research Center, eds. Determination of creep behavior of thermal barrier coatings under laser imposed temperature and stress gradients. National Aeronautics and Space Administration, Lewis Research Center, 1997.

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4

1947-, Miller Robert A., and NASA Glenn Research Center, eds. Thermal conductivity and elastic modulus evolution of thermal barrier coatings under high heat flux conditions. National Aeronautics and Space Administration, Glenn Research Center, 1999.

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5

DellaCorte, Christopher. Evaluation of advanced solid lubricant coatings for foil air bearings operating at 25 and 500⁰C. National Aeronautics and Space Administration, Lewis Research Center, 1998.

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6

DellaCorte, Christopher. Evaluation of advanced solid lubricant coatings for foil air bearings operating at 25 and 500⁰C. National Aeronautics and Space Administration, Lewis Research Center, 1998.

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7

DellaCorte, Christopher. Evaluation of advanced solid lubricant coatings for foil air bearings operating at 25 and 500⁰C. National Aeronautics and Space Administration, Lewis Research Center, 1998.

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8

Zainuddin, I. Detection and sizing of coating defects on pipelines under cathodic protection by the D.C. voltage gradient method. UMIST, 1996.

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9

Friction and wear properties of a-DLC-based functionally gradient nanocomposite coatings. National Aeronautics and Space Administration, Lewis Research Center, 1998.

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10

(Editor), M. Angels Anglada, E. Jimenez-Pique (Editor), and P. Hvizdos (Editor), eds. Layered, Functional Gradient Ceramics, and Thermal Barrier Coatings: Design, Fabrication and Application (Key Engineering Materials). Trans Tech Pubn, 2007.

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Частини книг з теми "Gradient coatings"

1

Kunioshi, Clarice Terui, Olandir Vercino Correa, and Lalgudi Venkataraman Ramanathan. "Gradient Nickel – Alumina Composite Coatings." In Materials Science Forum. Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-423-5.261.

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2

Minko, Sergiy, Leonid Ionov, Alexander Sydorenko, et al. "Gradient Stimuli-Responsive Polymer Grafted Layers." In Stimuli-Responsive Polymeric Films and Coatings. American Chemical Society, 2005. http://dx.doi.org/10.1021/bk-2005-0912.ch005.

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3

Knotek, O., J. Jungblut, and F. Löffler. "On Magnetron Sputtered Gradient and Multilayer Coatings." In Surface Engineering. Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0773-7_53.

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4

Romashin, Sergey N., Victoria Yu Presnetsova, Larisa Yu Frolenkova, Vladimir S. Shorkin, and Svetlana I. Yakushina. "Theoretical Estimation of the Strength of Thin-film Coatings." In Higher Gradient Materials and Related Generalized Continua. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-30406-5_11.

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5

Otooni, M. A., I. G. Brown, S. Anders, and Z. Wang. "Nanoscale/Multilayer Gradient Materials for Application in the Electromagnetic Gun Systems." In Protective Coatings and Thin Films. Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5644-8_38.

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6

Kuznetsov, V. P., V. P. Lesnikov, N. A. Popov, I. P. Konakova, and M. A. Popova. "Gradient Complex Protective Coatings for Single-Crystal Nickel Alloys." In Advanced Methods and Technologies in Metallurgy in Russia. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-66354-8_7.

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7

Rogachev, Alexandr V., Ekaterina A. Kulesh, Dmitry G. Piliptsou, Alexandr S. Rudenkov, and Jiang X. Hong. "Structure and Mechanical Properties of Gradient Metal-Carbon Coatings." In Recent Advances in Technology Research and Education. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-99834-3_1.

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8

Vaßen, R., and D. Stöver. "Conventional and New Materials for Thermal Barrier Coatings." In Functional Gradient Materials and Surface Layers Prepared by Fine Particles Technology. Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-010-0702-3_21.

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9

Tan, Yang, Jon Longtin, Sanjay Sampath, and Dongming Zhu. "Effect of Thermal Gradient on the Through-Thickness Thermal Conductivity of Plasma-Sprayed TBCS." In Advanced Ceramic Coatings and Interfaces V. John Wiley & Sons, Inc., 2010. http://dx.doi.org/10.1002/9780470943960.ch6.

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Gogotsi, Yury, Valentin Kamyshenko, Vladimir Shevchenko, Sascha Welz, Daniel A. Ersoy, and Michael J. McNallan. "Nanostructured Carbon Coatings on Silicon Carbide: Experimental and Theoretical Study." In Functional Gradient Materials and Surface Layers Prepared by Fine Particles Technology. Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-010-0702-3_24.

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Тези доповідей конференцій з теми "Gradient coatings"

1

Lemarquis, Frédéric, Antonin Moreau, Fabien Lemarchand, et al. "Recent Progress on Versatile Variable Filters Using HELIOS Reactive Magnetron Sputtering Technology." In Optical Interference Coatings. Optica Publishing Group, 2025. https://doi.org/10.1364/oic.2025.tb.1.

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Анотація:
Gradient optical interference filters, in which the spectral properties shifts along a dimension of the component, are a promising way to simplify and to miniaturize imaging spectrophotometer systems. In this paper, we present a versatile method for the fabrication of variable filters with different spatial profiles based on plasma assisted reactive magnetron sputtering (PARMS) and demonstration of high performances gradient coatings and filters.
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2

Farr, Philipp, Chris Britze, Florian Gebert, et al. "Development of a compact multi-gradient bandpass filter for hyperspectral imaging in smart farming applications." In Optical Interference Coatings. Optica Publishing Group, 2025. https://doi.org/10.1364/oic.2025.mb.5.

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Анотація:
A compact multi-gradient bandpass filter for agricultural hyperspectral imaging in the spectral range 400-1700 nm is developed using magnetron sputtering. With lift-off processing, three independent filters are integrated onto a single 10 mm substrate.
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3

Wojcieszak, Damian, Agata Obstarczyk, Bogumiła Szponar, et al. "Comparison of optical and antibacterial behavior of Nb2O5 coatings prepared by Gas Impulse Magnetron Sputtering with homogenous and gradient distribution of bioactive ions." In Optical Interference Coatings. Optica Publishing Group, 2025. https://doi.org/10.1364/oic.2025.tb.5.

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Анотація:
Transparent Nb2O5-based thin-film coatings prepared by Gas Impulse Magnetron Sputtering (GIMS) demonstrate excellent optical properties and selective antibacterial activity. Doping with bioactive metals, distributed uniformly or in a gradient, enhances biocidal activity.
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4

Knudsen, Ole Øystein, Neil Wilds, and Karen Sigbjørnsen. "Test Method for Coatings under Thermal Insulation." In CORROSION 2014. NACE International, 2014. https://doi.org/10.5006/c2014-4193.

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Анотація:
Abstract Thermally insulated steel surfaces are very challenging with respect to corrosion protection for several reasons. High temperature and temperature cycling is generally demanding for protective organic coatings. Moisture frequently penetrates the insulation mantling and provides a very corrosive environment. The mantling also prevents the moisture to escape, and the corrosive environment is trapped. Finally, the insulation prevents efficient inspection of the state of the coating. Hence, corrosion can develop to a severe state without being discovered. Selecting suitable coating produc
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5

Yun, Jun Tae, Taek Kyu Kwon, Tae Sung Kang, Kyung Lae Kim, Tae kyu Kim, and Jong Man Han. "A Critical Study on Edge Retention of Protective Coatings for a Ship Hull." In CORROSION 2005. NACE International, 2005. https://doi.org/10.5006/c2005-05016.

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Анотація:
Abstract The problems of early coating failure, mechanical damages, and the subsequent corrosion at and around edge areas, are a major concern of the ship’s ballast tank. These problems result directly from: exposure to very corrosive conditions, the deficient edge retention caused by surface tension, surface tension gradient, gravity-driven gradients, and coating’s shrinkage during application and the curing. During recent years, there has been an industrial trend towards the development of edge retention ability such as, using high solid or solvent-free coating materials and applying stripe
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6

Frost, Nick J. "Electromagnetic Techniques for Monitoring Pipeline Coatings." In CORROSION 1987. NACE International, 1987. https://doi.org/10.5006/c1987-87311.

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Анотація:
Abstract A cathodically protected and coated buried steel pipeline can be maintained in a non-corroding condition by maintaining its insulating coating. A pipeline that exhibits high pipe to soil resistance along its entire length has healthy coating whilst low resistance sections suggest coating defects of a type that may permit corrosion and therefore may need repairing. Low resistance coating defects provide conductive paths such that if a pipe has a voltage applied to it with respect to ground, some current will leak to ground at the site of a defect. The existence of a leak to ground can
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7

Al-Borno, Amal, and Mick Brown. "Comparative Testing of 31 Tank Lining Systems." In CORROSION 2007. NACE International, 2007. https://doi.org/10.5006/c2007-07025.

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Анотація:
Abstract This is a joint industry study conducted for 18 suppliers and end-users. The study examined the performance characteristics of thirty-one (31) Tank Lining systems, which included Epoxy (Standard, Phenolic and Novolac) and Vinyl Ester coatings, all applied under the same conditions. Tests focused on performance under immersion conditions and included Soak Adhesion, Cathodic Disbondment, Standard Atlas Cell, Pressurized Atlas Cell, and Autoclave. The different tests were used to examine the effects of temperature, pressure, thermal gradient, cathodic protection, acid gases and different
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8

Payer, Joe H., Douglas P. Moore, and J. Lee Magnon. "Performance Testing of Fusion Bonded Epoxy Coatings." In CORROSION 2000. NACE International, 2000. https://doi.org/10.5006/c2000-00168.

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Анотація:
Abstract A number of tests are used by industry to evaluate protective coatings for buried pipelines. The connection between laboratory test results and performance in service is often not clear. Immersion tests and cathodic disbondment tests are the most common to measure the durability of coatings for corrosion protection of the pipelines. Two important factors are examined in this work: (a) the effect of thermal gradient across the coated sample and (b) the combined effects of water soak and cathodic disbondment. Fusion bonded epoxy (FBE) coated steel was exposed at elevated temperatures wi
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9

Ruschau, G. R., and A. R. Kowalski. "Field Investigation of Aboveground Techniques for Detecting Coating Anomalies." In CORROSION 2006. NACE International, 2006. https://doi.org/10.5006/c2006-06191.

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Анотація:
Abstract Aboveground coating condition surveys were conducted at several locations on a pipeline scheduled for rehabilitation. The methods included direct current voltage gradient (DCVG), alternating current voltage gradient (ACVG), and pipeline current mapper (PCM). The results of the surveys were compared with visual examinations of the coating condition after excavation of the pipelines. The overall objective was to determine the limitations/resolution of equipment typically used for modern aboveground ECDA work with respect to locating holidays and disbondments in the common coatings with
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10

Hansen, Douglas C., Gary E. Grecsek, and Robert O. Roberts. "A Scanning Kelvin Probe Analysis of Aluminum and Aluminum Alloys." In CORROSION 1999. NACE International, 1999. https://doi.org/10.5006/c1999-99515.

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Анотація:
Abstract A scanning Kelvin probe was used to determine a correlation between work function measurements in air and corrosion potential measurements in solution of pure metals. Test panels of AA2024-T3 treated with various surface preparations and primer/coatings were also analyzed using this technique. Filiform corrosion was observed on a scribed panel that had been exposed to a humid environment, whereas on a non-scribed and non-exposed test panel, holidays in the coating were observed and clearly defined. Work function (wf) analysis yielded more noble values for areas within the scribe mark
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Звіти організацій з теми "Gradient coatings"

1

Bruce and Li. L51666 Surface Preparation and Coatings on the Susceptibility of Line Pipe to Stress-Corrosion Cracking. Pipeline Research Council International, Inc. (PRCI), 1992. http://dx.doi.org/10.55274/r0010315.

Повний текст джерела
Анотація:
Within the last decade, a number of gas pipeline companies throughout the world have identified the presence of Stress-Corrosion Cracking (SCC) on their pipelines. While the cause of the SCC resulted from a multitude of factors, there appeared to be a commonality relating to pipeline coatings. Although SCC has occurred under polyethylene/PVC tapes and enamel coatings, not a single incident has been recorded where SCC has occurred on a fusion-bonded-epoxy coated line. The three major factors that were thought to account for the difference in the SCC performance of the various coatings were; (1)
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2

Huatian, Xu, and Bi Wuxi. PR469-183600-R01 The Influence of Solid State Decouplers on Pipeline CP Surveys. Pipeline Research Council International, Inc. (PRCI), 2020. http://dx.doi.org/10.55274/r0011935.

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Анотація:
The objectives of this research are to figure out how solid state decouplers (SSDs) influence the surveys related to pipeline cathodic protection (CP) and provide corresponding field guidelines on how to mitigate the adverse effects of SSDs. Firstly, by combining the classical capacitor discharge theory and the equivalent circuit of the CP system, a four-stage physical model is built to explain how SSDs' discharge current pulse influences the CP related readings. From the physical model, we can obtain the following conclusions: (1) The driving force behind the discharging of an SSD's capacitor
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