Relevant bibliographies by topics / Aluminide Coating

Academic literature on the topic 'Aluminide Coating'

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Published: 6 September 2023

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Journal articles on the topic "Aluminide Coating"

1

Hua, Yin Qun, Zhen Rong, Kang Min Chen, Yun Xia Ye, Wen Hui Wu, and Rui Fang Chen. "Effect of Y2O3 on Microstructure and Oxidation Behavior of Aluminide Coating on Ni-Based Superalloy." Advanced Materials Research 1095 (March 2015): 603–7. http://dx.doi.org/10.4028/www.scientific.net/amr.1095.603.

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The oxidation behavior of Ni-based superalloy GH586 which is treated by pack-cementation aluminizing was investigated. Scanning electron microscope and X-ray diffraction were used to analyze the microstructure of aluminide coatings and the surface morphologies of the oxide scales. Results show that the main phase of the aluminide coatings was NiAl. The aluminide coating can be formed at lower temperature due to the addition of rare earth oxide in the mixture powders. The thickness of aluminide coating at 900°C was about 110μm, and another aluminide coating with rare earth oxide Y2O3 at 800°C was about 38μm. The oxidation kinetics of aluminized specimens approximately followed a parabolic oxidation law at 1000°C. The morphology of the oxidation scales was primarily θ-Al2O3 with minor α-Al2O3. The scales of the coatings with rare earth oxide Y2O3 after oxidation was more dense.
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Góral, Marek, Andrzej Nowotnik, and Jan Sieniawski. "The CVD Aluminizing of TiAl Intermetallics." Solid State Phenomena 203-204 (June 2013): 327–30. http://dx.doi.org/10.4028/www.scientific.net/ssp.203-204.327.

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The article presents the first attempt to CVD-aluminise alloys based on an intermetallic phase Ti48Al2Cr2Nb. Moreover, it includes initial results of producing VPA-deposited aluminide coating in industrial environment. Microstructure and phase analyses of the obtained coatings have been conducted. The chemical and phase composition analyses have revealed that the CVD-deposited coating was roughly 8 m thick, and composed of aluminium-rich TiAl phase, whereas the application of VPA method results in a coating which is approximately 18 m thick and consists of three layers made up of TiAl3, TiAl2 i TiAl phases. Both deposition processes were conducted with industrial equipment.
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Hong, Seok Jun, Jae Woong Choi, Gil Ho Hwang, Won Kyu Han, Joon Shik Park, and Sung Goon Kang. "Effect of the Palladium Mid-Layer on the Cyclic Oxidation of Platinum Aluminide Bond Coating." Materials Science Forum 510-511 (March 2006): 1058–61. http://dx.doi.org/10.4028/www.scientific.net/msf.510-511.1058.

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Platinum/Palladium modified aluminide coatings prepared by aluminide pack cementation on the nickel base superalloy Inconnel 738. The platinum/palladium modified aluminide coating of cyclic oxidation behavior at 1200°C was investigated by TGA, XRD and SEM/EDS. Platinum/Palladium modified aluminide coatings showed better cyclic oxidation resistance than Platinum modified aluminide coating and palladium modified aluminide coating compared. Pt and Pd alloy played an enough role in alumina stabilization and in delaying the degradation of β-phase.
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McMinn, A., R. Viswanathan, and C. L. Knauf. "Field Evaluation of Gas Turbine Protective Coatings." Journal of Engineering for Gas Turbines and Power 110, no. 1 (January 1, 1988): 142–49. http://dx.doi.org/10.1115/1.3240077.

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The hot corrosion resistance of several protective coatings that had been applied to MAR-M-509 nozzle guide vanes and exposed in a utility gas turbine has been evaluated. The coatings included basic aluminide, rhodium-aluminide, platinum-rhodium-aluminide, and palladium-aluminide diffusion coatings, and cobalt-chromium-aluminum-yttrium (CoCrAlY) and ceramic overlay coatings. A combination of metallographic examination of vane cross sections and energy dispersive X-ray analysis (EDS) was employed in the evaluation. The results showed that none of the coatings was totally resistant to corrosive attack. The CoCrAlY and platinum-rhodium-aluminide coatings exhibited the greatest resistance to hot corrosion. The CoCrAlY coated vanes were, however, susceptible to thermal fatigue cracking. Except for the poor performance of the palladium-aluminide coating, the precious metal aluminides offered the best protection against corrosion. Hot isostatically pressing coatings was not found to be beneficial, and in one case appeared detrimental.
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Kovrov, Vadim, Yuriy Zaikov, Vladimir Tsvetov, Yuriy Shtefanyuk, Vitaliy Pingin, and Matvey Golubev. "Aluminide Coating Application for Protection of Anodic Current-Supplying Pins in Soderberg Electrolytic Сell for Aluminium Production." Materials Science Forum 900 (July 2017): 141–45. http://dx.doi.org/10.4028/www.scientific.net/msf.900.141.

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Anodic current-supplying pins (ACP) made of low-carbon steel corrode intensively due to the sulfur contamination of the carbon-based Soderberg anode and iron sulfides formation in the present aluminium production technology. The aluminide coatings produced by the liquid-phase method followed by the fluoride flux treatment of the steel samples were applied for the ACP protection. The protective layer based on α-Al2O3 and FeAl2O4 was formed on the steel surface in the course of the test run in the industrial Soderberg anode during the aluminium electrolysis. The aluminized ACP wear rates calculated by the linear extrapolation of data obtained during 150 days workout were 4.0 and 5.4 cm/year for the ACP with the aluminide coating and without it, respectively. The current load on the ACP remained almost the same for the aluminized and original uncoated samples with the exception of the initial “heating” period (400-600°C).
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Cheruvu, N. S., K. S. Chan, and G. R. Leverant. "Cyclic Oxidation Behavior of Aluminide, Platinum Modified Aluminide, and MCrAlY Coatings on GTD-111." Journal of Engineering for Gas Turbines and Power 122, no. 1 (October 20, 1999): 50–54. http://dx.doi.org/10.1115/1.483174.

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Cyclic oxidation behavior of aluminide, platinum modified aluminide, and MCrAlY coatings has been investigated at three temperatures. Aluminide and platinum modified coatings were deposited on GTD 111 material using an outward diffusion process. CoCrAlY coating was applied on GTD-111 by Electron Beam Physical Vapor Deposition (EB-PVD). The oxidation behavior of these coatings is characterized by weight change measurements and by the variation of β phase present in the coating. The platinum modified aluminide coating exhibited the highest resistance to oxide scale spallation (weight loss) during cyclic oxidation testing. Metallographic techniques were used to determine the amount of β phase and the aluminum content in a coating as a function of cycles. Cyclic oxidation life of these coatings is discussed in terms of the residual β and aluminum content present in the coating after exposure. These results have been used to calibrate and validate a coating life model (COATLIFE) developed at the Material Center for Combustion Turbines (MCCT). [S0742-4795(00)00801-2]
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Filip, Ryszard, Marek Góral, Marcin Zawadzki, Andrzej Nowotnik, and Maciej Pytel. "The Influence of Long-Term Heat Treatment on Microstructure of Zr-Modified Aluminide Coating Deposited by CVD Method on MAR M200+Hf Nickel Superalloy." Key Engineering Materials 592-593 (November 2013): 469–72. http://dx.doi.org/10.4028/www.scientific.net/kem.592-593.469.

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The article presents the investigation of influence of long-term annealing of Zr modified aluminide coatings on its microstructure. The coatings were deposited by Chemical Vapour Deposition on MAR M200+Hf nickel superalloy. Annealing was carried out in a vacuum furnace at the temperature 1020°C within the period of 12, 16 and 20 hours respectively. The microstructral analysis was carried out using Hitachi S-3400 scanning electron microscope. Phase changes in the aluminide layer were observed, particularly the NiAl phase into Ni3Al. Changes in thickness of individual layers in the coating were observed. Conducted research showed that there is no influence of Zr on structure of the aluminide coating during annealing. The structure changes are similar to observed in simple aluminide coating. The maximum time of heat treatment without significant influence on structure of aluminide coating is 16 hours. After that time the main component of coating is NiAl phase.
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Du, Hailiang, Ning Tan, Li Fan, Jiajie Zhuang, Zhichao Qiu, and Yanhua Lei. "Formation Mechanism of Aluminide Diffusion Coatings on Ti and Ti-6Al-4V Alloy at the Early Stages of Deposition by Pack Cementation." Materials 12, no. 19 (September 23, 2019): 3097. http://dx.doi.org/10.3390/ma12193097.

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The diffusion coatings were deposited on commercially pure Ti and Ti-6Al-4V alloy at up to 1000 °C for up to 10 h using the pack cementation method. The pack powders consisted of 4 wt% Al (Al reservoir) and 4 wt% NH4Cl (activator) which were balanced with Al2O3 (inert filler). The growth kinetics of coatings were gravimetrically measured by a high precision balance. The aluminised specimens were characterised by means of scanning electron microscopy (SEM), energy dispersive spectrometer (EDS) and X-ray diffraction (XRD). At the early stages of deposition, a TiO2 (rutile) scale, other than aluminide coating, was developed on both materials at <900 °C. As the experimental temperature arose above 900 °C, the rutile layer became unstable and reduced to the low oxidation state of Ti oxides. When the temperature increased to 1000 °C, the TiO2 scale dissociated almost completely and the aluminide coating began to develop. After a triple-layered coating was generated, the coating growth was governed by the outward migration of Ti species from the substrates and obeyed the parabolic law. The coating formed consisted of an outer layer of Al3Ti, a mid-layer of Al2Ti and an inner layer of AlTi. The outer layer of Al3Ti dominated the thickness of the aluminide coating.
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Góral, Marek, Maciej Pytel, Ryszard Filip, and Jan Sieniawski. "The Influence of Turbine Blade Geometry and Process Parameters on the Structure of Zr Modified Aluminide Coatings Deposited by CVD Method on the ZS6K Nickel Superalloy." Solid State Phenomena 197 (February 2013): 58–63. http://dx.doi.org/10.4028/www.scientific.net/ssp.197.58.

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The Zr modified aluminide coatings is an alternative concept for replacing Pt-modified aluminide bondcoat for thermal barrier coatings. In the paper the influence of process parameters on the chemical composition and the thickness of aluminide coatings will be presented. The zirconia-doped aluminide coating was deposited on turbine blades made from ZS6K nickel superalloy during the low-activity CVD process. In recent work the influence of turbine blade geometry on thickness of coating was observed. The thickest coating was observed on the trailing and leading edge on the blade cross-section. In the conducted research, the light and scanning electron microscopy were used as well as the EDS chemical composition microanalysis.
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Zagula-Yavorska, M., and J. Romanowska. "The effect of precious metals in the NiAl coating on the oxidation resistance of the Inconel 713 superalloy." Journal of Mining and Metallurgy, Section B: Metallurgy, no. 00 (2022): 11. http://dx.doi.org/10.2298/jmmb220427011z.

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The rhodium incorporated aluminide coating was produced by the rhodium electroplating (0.5 ?m thick layer) followed by the chemical vapor deposition process on the Inconel 713 superalloy. This coating is composed of the ?-NiAl phase. A part of nickel atoms is replaced by rhodium atoms in the ?-NiAl phase. The plain, rhodium and platinum incorporated aluminide coatings were oxidized at 1100?C under the atmospheric pressure. The oxidation kinetics of the rhodium and platinum incorporated aluminide coatings are similar, but different than oxidation kinetic of the plain coating. The ?-Al2O3 is the main product both in rhodium and platinum modified coatings after 360 h of oxidation. Moreover, the ?-Ni3Al phase, besides the ?-NiAl phase, was identified. The presence of 4 at. % rhodium in the coating provides similar oxidation resistance as the presence of 10-20 at. % platinum. Both rhodium and platinum incorporated aluminide coatings produced by the chemical vapor deposition process offer good oxidation protection of the Inconel 713 superalloy.
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Dissertations / Theses on the topic "Aluminide Coating"

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Wang, Yongqing. "Aluminide coatings on Fe-9Cr-1Mo steel synthesized by pack cementation for power generation applications : a dissertation presented to the faculty of the Graduate School, Tennessee Technological University /." Click to access online version, 2006. http://proquest.umi.com/pqdweb?index=89&did=1260818241&SrchMode=1&sid=1&Fmt=6&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1255459401&clientId=28564.

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Rannou, Benoît. "Slurry coatings from aluminium microparticles on Ni-based superalloys for high temperature oxidation protection." Phd thesis, Université de La Rochelle, 2012. http://tel.archives-ouvertes.fr/tel-00839790.

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Because of their good mechanical resistance at high temperature, Ni-based superalloys are used for aero-engine and land-based turbines but undergo "dry" oxidation between 900 and 1500°C. These materials are thus coated with nickel-aluminide coatings (BC). An additional thermal barrier coating (TBC) is generally applied in the hottest sections of the turbines (T>1050°C) to lower the impact of the temperature on the substrate. In the framework of the European research programme "PARTICOAT", this PhD work was focused on the growth mechanisms of a full protective coating system (BC+TBC) in a single step process, using a water-based slurry containing a dispersion of Al micro-particles to satisfy the European environmental directives. The rheological and physico-chemical characterizations showed the slurry stability up to seven days. After depositing the latter by air spraying, a tailored thermal treatment resulted in a nickel-aluminide coating (β-NiAl) similar to the conventional industrial ones but through an intermediate Al liquid phase stage. Simultaneously, the oxidation of the Al micro-particles brought aboutthe formation of a top alumina "foam" (PARTICOAT concept). After a validation step of the mechanisms involved in pure Ni substrate, the extrapolation of the process to several Ni-based superalloys (René N5 (SX), CM-247 (DS), PWA- 1483 (SX) and IN-738LC (EQ)) revealed different coating compositions and microstructures. A particular attention was therefore paid onto the effect of alloying elements (Cr, Ta, Ti) as well as their segregation in the coating. The high temperature behaviour of the coated samples has been studied through isothermal oxidation (1000h in air between 900 and 1100°C) and showed that the oxidation and interdiffusion phenomena ruled the degradation mechanisms. Besides, the electrodeposition of ceria before the application of the PARTICOAT coating allowed to strongly limit interdiffusion phenomena and stabilized the nickel aluminide coating.
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Priest, Matthew. "Synthesis of reactive element-modified aluminide coatings on single-crystal Ni-based superalloys by a pack cementation process a thesis presented to the faculty of the Graduate School, Tennessee Technological University /." Click to access online, 2009. http://proquest.umi.com/pqdweb?index=26&did=1760523421&SrchMode=1&sid=1&Fmt=6&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1254926883&clientId=28564.

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Mollard, Maël. "Elaboration de systèmes barrière thermique par barbotine : comportement du nickel et de ses superalliages revêtus en oxydation cyclique à haute température." Phd thesis, Université de La Rochelle, 2012. http://tel.archives-ouvertes.fr/tel-00839920.

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Les superalliages base nickel sont couramment utilisés dans les parties chaudes des turbines aéronautiques et de production d'énergie. Les températures employées, supérieures à 900°C, nécessitent de concevoir des revêtements protecteurs pour lutter contre les phénomènes d'oxydation. Les revêtements couramment utilisés, composés pour la plupart de la phase β-NiAl, permettent de retarder les phénomènes de dégradation en développant une couche d'alumine. Dans les sections les plus chaudes, une barrière thermique composée de céramique, associée à un système de refroidissement interne complètent le dispositif de protection en permettant d'abaisser la température effective au niveau du substrat métallique.Ces revêtements sont cependant onéreux et utilisent de nombreux produits polluants. Les travaux de cette thèse, qui s'inscrivent dans le cadre du projet européen Particoat, se proposent d'élaborer un système barrière thermique en une seule étape reposant sur l'application d'une barbotine à base aqueuse comprenant des microparticules d'aluminium, suivi d'un traitement thermique approprié. L'aluminium contenu dans les sphères devient liquide puis réagit avec le substrat pour former une couche d'intermétallique riche en aluminium par diffusion à l'état solide. Simultanément les coquilles des sphères s'oxydent pour former une structure mousse en surface du substrat qui va conférer au système son isolation thermique. La cohésion des deux parties est assurée par l'oxyde thermique qui se forme à la surface du revêtement inter métallique. Les mécanismes mis en jeu lors des différentes étapes, ont été étudiés sur un substrat modèle, le nickel, ainsi que sur trois superalliages industriels (René N5, PWA 1483 et CM-247). Les revêtements ainsi élaborés ont été testés en condition d'oxydation isotherme et cyclique entre 900 et1100°c pour le nickel et entre 1000 et 1100°C pour les superalliages revêtus. L'ensemble montre une bonne résistance du système barrière thermique élaboré par barbotine.
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Villemiane, Arnaud. "Comportement mécanique d'alliages pour couches de liaison de barrière thermique par microindentation instrumentée à haute température." Thesis, Vandoeuvre-les-Nancy, INPL, 2008. http://www.theses.fr/2008INPL112N/document.

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Les systèmes barrières thermiques protégeant les aubes de turbine sont des multicouches constitués d’une couche céramique isolante appliquée sur un superalliage par l’intermédiaire d’une couche de liaison qui, dans les systèmes actuels est à base de NiAl(Pt). Pour en comprendre et décrire le comportement thermomécanique, il est nécessaire de connaître le comportement de chaque couche, en particulier celui de la couche de liaison dont le rôle est critique. Nous avons employé une technique originale, la microindentation instrumentée à chaud (jusqu’à 850°C), pour obtenir des informations sur le comportement mécanique de matériaux de couches de liaison. Il a fallu d’abord fiabiliser le dispositif pour minimiser les effets d’oxydation et caractériser la stabilité thermique pour s’assurer de la validité et la reproductibilité des résultats. Un second volet a consisté à mettre en place une méthode de traitement de données et une méthode d’analyse inverse des résultats associant une approche analytique et une simulation de l’essai par éléments finis. Les essais menés sur des matériaux massifs élaborés sous forme de couples de diffusion pour explorer une large gamme de compositions ont permis de déterminer la loi de comportement élastoviscoplastique du composé NiAl(Pt) sous forme [bêta] et sous forme martensitique. Des propriétés mécaniques ont été également été déterminées sur les composés NiAl(Ru) et NiAl(Zr) envisagés pour des systèmes futurs. L’influence des divers éléments (Al, Pt et Ru) a pu ainsi être mise en évidence. Finalement des essais ont été effectués sur des couches de liaison de barrière thermique et les résultats corrélés à ceux obtenus sur matériaux massifs
Thermal barrier systems, which protect turbine blades, are multilayers constituted of an insulating ceramic layer applied on a metallic bondcoat itself in contact with the superalloy substrate. A widely used bondcoat is composed of a NiAl(Pt) compound. In order to understand and describe the thermomechanical behaviour of such systems, it is required to know the mechanical behaviour of each layer, in particular that of this bondcoat whose role is critical for maintaining the integrity of the systems. In this study, we have employed an original technique – high temperature instrumented microindentation, up to 850°C – to extract information on the mechanical behaviour of bondcoat materials. A preliminary phase consisted in improving the experimental procedure - in particular to minimise oxidation phenomena - and in characterising the thermal stability of the equipment at high temperature to ensure the reliability, validity and reproducibility of the results obtained. We have then developed a systematic data treatment and an inverse problem analysis combining analytical approaches and a FEM simulation of the experiment to extract a mechanical behaviour law of the materials investigated. Tests performed on bulk diffusion couples, selected to explore a wide range of compositions representative of aging bondcoats, permitted to extract an elastic viscoplastic behaviour law of NiAl(Pt), both in the B2 phase and in the martensitic phase. Some mechanical properties could also be determined on NiAl(Ru) and NiAl(Zr) systems. Finally the results of a few tests performed on thermal barrier bondcoats could be correlated with the results obtained on bulk materials
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Chien, H. H. "The mechanical properties of aluminide coatings." Thesis, Cranfield University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.352970.

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Oki, Makanjuola. "Conversion coatings on aluminium." Thesis, University of Manchester, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390302.

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Mirhashemihaghighi, Shadi. "Nanometre-thick alumina coatings deposited by ALD on metals : a comparative electrochemical and surface analysis study of corrosion properties." Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066349/document.

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La protection contre la corrosion par des films ultramince (≤50 nm) d'alumine déposées par ALD sur le cuivre et l'aluminium à 250°C a été étudiée dans une solution aqueuse 0,5 M de NaCl en combinant méthodes d'analyse électrochimique et de surface. L'étude de l'alumine ALD sur un substrat Cu comprend l'effet de l'épaisseur du revêtement, l'effet de l'oxyde interfacial, l'effet de la préparation de la surface et la durabilité du revêtement. Pour le substrat Al, le travail a porté sur l'examen de l'effet de l'épaisseur du revêtement. Les revêtements ont montré d'excellentes propriétés de corrosion sur des substrats Cu électropoli, tandis qu'ils ont échoué à protéger le substrat recuit, de fait d'une mauvaise adhérence à une surface lissée. L'amélioration de la résistance à la corrosion d'alumine ALD sur le substrat Cu est obtenue en l'absence de vieillissement de l'oxyde natif interfacial, et sa modification par un prétraitement. En dépit de remarquables propriétés d'étanchéité sur un substrat Cu électropoli, la protection contre la corrosion de l'alumine ALD n'est pas durable. Le revêtement du substrat Al avec l'alumine ALD conduit à l'augmentation significative de la résistance à la corrosion. Le potentiel de piqûration est augmenté en présence des revêtements l'épaisseur de 20 et 50 nm, ce qui n'a pas été obtenus avec 10 nm en raison de sa faible épaisseur. Cette étude est une étude préliminaire pour l'application de revêtements d'alumine ALD pour la protection contre la corrosion des alliages Al-Cu en combinaison avec d'autres compositions ALD
Corrosion protection by ultrathin (≤ 50 nm) alumina films deposited by atomic layer deposition (ALD) on copper and aluminium at 250°C was studied in 0.5 M NaCl aqueous solution by combining electrochemical and surface analytical methods. The study of ALD Al2O3 on Cu substrate included investigation of the effect of the coating thickness, the effect of an interfacial oxide, the effect of surface preparation and the durability of the coating. For ALD Al2O3 on Al substrate, the work focused on the examination of the effect of the deposited coating thickness. ALD alumina coatings showed excellent corrosion properties on electropolished copper substrates, while they failed to protect the annealed substrate, as a result of poor adhesion to a smoothened surface. Modification of interfacial native copper oxide by its pre-treatment led to better corrosion protection of ALD alumina on copper substrate. Despite its remarkable sealing properties on electropolished Cu substrate, corrosion protection of ALD alumina was not durable. Coating of Al substrate with ALD Al2O3 led to significant increase of polarization resistance. Better performance was obtained for 10 and 20 nm coatings on Al than on Cu. Apart from significant decrease of current, the pitting potential was increased in presence of 20 and 50 nm coatings, which was not achieved with 10 nm due to its low thickness. This study was a preliminary study for application of ALD alumina coatings for corrosion protection of Al-Cu alloys in combination with other ALD compositions
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Etheridge, Andrea Mary. "Conversion coatings on aluminium alloys." Thesis, University of Oxford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307051.

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Rayner, Timothy James. "Development and evaluation of yttrium modified aluminide diffusion coatings." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0008/MQ34151.pdf.

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Books on the topic "Aluminide Coating"

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MacQuarrie, John. Ultrasonic characterization of a platinum aluminide coating on a gas turbine blade. Ottawa: National Library of Canada = Bibliothèque nationale du Canada, 1992.

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Meelu, Mehar Chand. Improvement in Mechanical Properties of Silicon Modified Aluminide Diffusion Coating (Sermlaloy J) used for Hot Corrosion Protection of Hot End Gas Turbine Components. Birmingham: University of Birmingham, 1996.

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A, Barrett Charles, and United States. National Aeronautics and Space Administration., eds. The effect of Cr, Co, Al, Mo, and Ta on a series of cast Ni-base superalloys on the stability of an aluminide coating during cyclic oxidation in Mach 0.3 burner rig. [Washington, D.C.]: National Aeronautics and Space Administration, 1986.

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Braun, H. A. Chemical conversion coatings on aluminium. Manchester: UMIST, 1993.

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E, Lindemuth James, and United States. National Aeronautics and Space Administration., eds. Insoluble coatings for Stirling engine heat pipe condenser surfaces. Lancaster, Pa: Thermacore, Inc., 1997.

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Center, Lewis Research, ed. Insoluble coatings for Stirling engine heat pipe condenser surfaces. [Cleveland, Ohio]: Lewis Research Center, National Aeronautics and Space Administration, 1993.

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Deb, Prabir. Microstructural formation and effects on the performance of platinum modified aluminide coatings. Monterey, Calif: Naval Postgraduate School, 1985.

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Abdul-Mahdi, Fadhil S. Tribological characteristics of coatings on aluminium and its alloys. Uxbridge: Brunel University, 1987.

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Campestrini, Paola. Microstructure-related quality of conversion coatings on aluminium alloys. Delft: DUP Science, 2000.

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Ashrafizadeh, S. Fakhreddin. Metallic and ceramic coatings on an aluminium-silicon alloy. Birmingham: University of Birmingham, 1988.

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Book chapters on the topic "Aluminide Coating"

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Byeon, Jai Won, N. Mu, J. Liu, and Yong Ho Sohn. "Characterization of Long-Term Oxidized Nickel Aluminide Coating by Photoluminescence Spectroscopy." In Materials Science Forum, 141–44. Stafa: Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-966-0.141.

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Santos, Henrique, Roberto Seno, Antonio Couto, Alex Fukunaga, and Adriano Francisco. "Development of an Iron Aluminide Coating for Anticorrosion Protection of Anodic Pins." In The Minerals, Metals & Materials Series, 1117–23. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-22532-1_150.

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Hong, Seok Jun, Jae Woong Choi, Gil Ho Hwang, Won Kyu Han, Joon Shik Park, and Sung Goon Kang. "Effect of the Palladium Mid-Layer on the Cyclic Oxidation of Platinum Aluminide Bond Coating." In Materials Science Forum, 1058–61. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-995-4.1058.

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Matsuoka, Yuki, Kazuyoshi Chikugo, Takakazu Suzuki, Yasuo Matsunaga, and Shigeji Taniguchi. "Isothermal Oxidation Behavior of Ru Modified Aluminide Coating on a Fourth Generation Single Crystal Superalloy." In Materials Science Forum, 111–16. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-996-2.111.

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Matsuoka, Yuki, Yasuo Matsunaga, Kiyokazu Nakagawa, and Shigeji Taniguchi. "Isothermal Oxidation of Pt Modified and Ru Modified Aluminide Coating on a Fourth Generation Single Crystal Superalloy." In High-Temperature Oxidation and Corrosion 2005, 301–8. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-409-x.301.

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Xie, Dong Bai, Sheng Long Zhu, Wen Jun Dai, and Fu Hui Wang. "Influence of NiCoCrAlY and Diffusion Aluminide Coating on Oxidation and Hot Corrosion of a Ni-Based Superalloy." In Materials Science Forum, 1739–46. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-432-4.1739.

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Rudolph, Stephan. "Boron Nitride Release Coatings." In Aluminium Cast House Technology, 163–70. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118806364.ch16.

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Ranganathan, Rajesh, Olga Vayena, Teiichi Ando, Charalabos C. Doumanidis, and Craig A. Blue. "In-Situ Processing of Nickel Aluminide Coatings on Steel Substrates." In Elevated Temperature Coatings, 171–80. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118787694.ch13.

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Kremitzl, Hans-Jörg. "3. Characterisation of aluminium pigments." In Colour Technology of Coatings, 198–202. Hannover, Germany: Vincentz Network, 2019. http://dx.doi.org/10.1515/9783748600282-028.

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Andrews, P. R., and J. S. Crompton. "Analysis of Surface Coating on Aluminium." In Adhesion 14, 36–50. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0759-1_3.

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Conference papers on the topic "Aluminide Coating"

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McConnell, Jeffrey J., Thomas A. Kircher, and Bruce G. McMordie. "Vapor-Phase Slurry Aluminide Coating for Gas Turbine Components." In ASME Turbo Expo 2005: Power for Land, Sea, and Air. ASMEDC, 2005. http://dx.doi.org/10.1115/gt2005-68132.

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Diffusion aluminide coatings have long been used to protect gas turbine components made of nickel, steel, and cobalt alloys from oxidation and corrosion at high temperatures. The most common method for producing aluminide coatings is to “pack” parts within a powdered mixture of aluminum metal, halide compounds and inert oxide. When this mixture is heated, the halide reacts with the aluminum to form aluminum-rich vapor that migrates to the part and forms protective intermetallic aluminide layers. Similar aluminide coatings can be produced from “vapor-phase” slurries that incorporate aluminum pigments and halide activators. Unlike slurries long used to locally repair pack aluminides via a liquid-phase reaction with molten (or semi-molten) aluminum, the thickness of an aluminide formed from a vapor-phase slurry depends primarily upon the diffusion cycle used, not upon the amount of slurry applied to the surface. By eliminating the need for a powder pack, the vapor-phase slurry reduces thermal mass of the furnace load, increases batch flexibility and simplifies masking. Examples of aluminide coatings that may be produced by this method are presented. It is also shown that the oxidation resistance of an aluminide produced from a vapor-phase slurry is comparable to that of a coating of similar composition formed by pack aluminization. Consequently, the properties and advantages of vapor-phase slurry aluminization make this method an attractive option for coating the entire gas path surfaces of many components.
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Dust, M. W., P. Deb, D. H. Boone, and S. Shankar. "Hot Corrosion Resistance of Chromium Modified Platinum-Aluminide Coating." In ASME 1986 International Gas Turbine Conference and Exhibit. American Society of Mechanical Engineers, 1986. http://dx.doi.org/10.1115/86-gt-291.

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The addition of elements such as Cr or Pt to the diffusion aluminide coatings has been reported to provide increased protectivity under hot corrosion and oxidation environments. Although the structure and corresponding corrosion resistance of Cr or Pt modified aluminides are reasonably understood there is, however, little information available on the combined additions of Cr and Pt or the processing sequences involved. The effects of both Cr and Pt additions to aluminide coatings on the IN-100 nickel-base superalloy substrate under low temperature (700°C) hot corrosion conditions have been studied. In this investigation, it was found that the structure of the Cr modified platinum-aluminide coatings is most dependent on the sequence of modifying element addition which affects the surface composition and resulting LTHC resistance. The optimum Cr-Pt coating is obtained by the Cr-Pt-Al deposition sequence which results in a continuous single PtAl2 phase layer backed up with a high level of Cr at the surface.
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Cheruvu, N. S., K. S. Chan, and G. R. Leverant. "Cyclic Oxidation Behavior of Aluminide, Platinum Modified Aluminide, and MCrAlY Coatings on GTD-111." In ASME 1998 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/98-gt-468.

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Cyclic oxidation behavior of aluminide, platinum modified aluminide, and MCrAlY coatings has been investigated at three temperatures. Aluminide and platinum modified coatings were deposited on GTD 111 material using an outward diffusion process. CoCrAlY coating was applied on GTD-111 by Electron Beam Physical Vapor Deposition (EB-PVD). The oxidation behavior of these coatings is characterized by weight change measurements and by the variation of β phase present in the coating. The platinum modified aluminide coating exhibited the highest resistance to oxide scale spallation (weight loss) during cyclic oxidation testing. Metallographic techniques were used to determine the amount of β phase and the aluminum content in a coating as a function of cycles. Cyclic oxidation life of these coatings is discussed in terms of the residual β and aluminum content present in the coating after exposure. These results have been used to calibrate and validate a coating life model (COATLIFE) developed at the Material Center for Combustion Turbines (MCCT).
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Connor, Jeffrey A. "Evaluation of Simple Aluminide and Platinum Modified Aluminide Coatings on High Pressure Turbine Blades After Factory Engine Testing-Round II." In ASME 1992 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1992. http://dx.doi.org/10.1115/92-gt-140.

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This paper presents results of factory engine testing of simple aluminide and platinum modified aluminide coatings. Simple aluminide coatings were produced using pack cementation processes. Platinum modified aluminide coatings were produced using three aluminiding processes; pack cementation, above-the-pack or out-of-contact processing, and chemical vapor deposition. These coatings were evaluated on both directionally solidified and single crystal nickel base superalloy turbine blades. These high pressure turbine blades were tested in a commercial high bypass turbofan engine operating predominantly in a high temperature oxidation environment. Included in this paper are discussions of coatings phase stability, coating growth due to diffusion during engine operation, comparison of coating performance and assessment of remaining coating life after engine testing.
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Chan, Kwal S., N. Sastry Cheruvu, and Gerald R. Leverant. "Coating Life Prediction Under Cyclic Oxidation Conditions." In ASME 1997 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/97-gt-389.

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The hot gas path section components of land based turbines require materials with superior mechanical properties and good hot corrosion and oxidation resistance. These components are generally coated with either a diffusion coating (aluminide or platinum aluminide) or with an overlay coating (MCrAlY) to provide additional hot corrosion and/or oxidation protection. These coatings degrade due to inward and outward diffusion of elements during service. Outward diffusion of aluminum results in formation of a protective oxide layer on the surface. When the protective oxide spalls, aluminum in the coating diffuses out to reform the oxide layer. Accelerated oxidation and failure of coating occur when the Al content in the coating is insufficient to reform a continuous alumina film. This paper describes development of a coating life prediction model that accounts for both oxidation and oxide spallation under thermal mechanical loading, as well as diffusion of elements that dictate the end of useful life. Cyclic oxidation data for aluminide and platinum aluminide coatings were generated to determine model constants. Applications of this model for predicting cyclic oxidation life of coated materials are demonstrated. Work is underway to develop additional material data and to qualify the model for determining actual blade and vane coating refurbishment intervals.
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Warnes, Bruce Michael. "Improved Pt Aluminide Coatings Using CVD and Novel Platinum Electroplating." In ASME 1998 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/98-gt-391.

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Chemical vapor deposition (CVD) is an old coating technology, but it was not successfully utilized to aluminize gas turbine hardware until recently (1989). In CVD aluminizing, the use of multiple, independently controlled, low temperature, external, metal halide generators combined with computer control of all process variables gives flexibility and consistent quality that is not possible with any other aluminizing process. It has been shown that harmful coating impurities (such as sulfur and boron etc.) can be transported to a coating from a high temperature aluminum source in the coating chamber during aluminizing. Representative processes include: pack cementation, above the pack, SNECMA, and high activity CVD. In contrast, it has also been demonstrated that CVD low activity aluminizing removes harmful impurities (S, P, B & W etc.) from the coating during deposition. Furthermore, clean, low activity coatings (simple aluminide MDC-210 or platinum modified MDC-150L) have been shown to exhibit superior oxidation resistance compared to similar coatings made by other aluminizing processes. A second significant source of impurities in platinum modified aluminide diffusion coatings is electroplating, that is, plating bath components (S, P, CI, K, Ca etc.) are codeposited with the platinum, and these impurities can have either a beneficial (K&Ca) or a detrimental (S,P&Cl) influence upon the oxidation resistance of the product coating. The results of investigations on the transport of impurities during aluminizing and electroplating, plus the influence of these impurities on oxidation resistance of the product coatings will be presented and discussed.
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Korinko, Paul S., Michael J. Barber, and Malcolm Thomas. "Coating Characterization and Evaluation of Directionally Solidified CM 186 LC® and Single Crystal CMSX-4®." In ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-gt-426.

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Hot corrosion and long-time dynamic oxidation tests were conducted on several alloy (equiaxed MM-0011 and IN738. SX CMSX-4. and DS CM186LC) and coating (Simple aluminide, Pt-aluminide, and NiCoCrAlY) combinations. The coating performance in both hot corrosion and oxidation testing was, in most cases, influenced by the substrate composition. An overlay NiCoCrAlY on either CMSX-4 or CM186LC appeared unaffected visually, but there were indications during metallographic examination that this coating substrate combination was beginning to degrade after a 1000 hour hot corrosion test. The results of the oxidation test indicated that several of the alloy/coating combinations that were superior in the hot corrosion test were inferior in oxidation. After 6000 hours of dynamic oxidation testing at 1038°C (1900°F) two of the alloy/coating combinations had not yet reached negative weight changes. Metallographic results from the oxidation test show a significant reaction layer in the CMSX-4 coated with either simple or modified aluminides or NiCoCrAlY overlay coatings.
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Prasad, B. Durga, Sankara N. Sankaran, Karl E. Wiedemann, and David E. Glass. "Platinum Substitutes and Two-Phase-Glass Overlayers as Low Cost Alternatives to Platinum Aluminide Coatings." In ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-gt-521.

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The feasibility of processing less-expensive alternative coatings to platinum aluminide was examined. Three approaches were followed: 1) enhancement of nickel-aluminide coatings by application of sol-gel derived two-phase-glass (TPG) overlayers, 2) evaluation of TPG coatings on bare IN 738LC, and 3) substitution of Pt with a less expensive platinum group metal (palladium). Accordingly, IN 738LC coupons were tested with several coatings including TPG, aluminide coatings (platinum aluminide, palladium aluminide, and conventional nickel aluminide), and TPG overlayers on the aluminide coatings. Isothermal-oxidation, cyclic-oxidation, and hot-corrosion tests were conducted at 900°C for 500 hours to evaluate the coatings. The results showed that the TPG by itself provided superior protection compared to the platinum-aluminide coatings under both oxidation and hot-corrosion conditions. The TPG coating also showed promise as an overcoat on aluminide coatings.
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Smith, J. S., and D. H. Boone. "Platinum Modified Aluminides-Present Status." In ASME 1990 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1990. http://dx.doi.org/10.1115/90-gt-319.

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Since their development in the early 1970’s, platinum modified aluminide diffusion coatings have been recognized for their superior oxidation and hot corrosion resistance on nickel based superalloys. More recently, advances in gas phase aluminizing have been utilized to afford coating protection to the internal as well as external surfaces of hollow gas turbine airfoils. This paper presents a brief review of the development history of the platinum aluminide coating system and discusses the various coating morphologies observed. The results of recent work in applying the low pressure chemical vapor deposition process for the production of platinum modified aluminide gas phase coatings on gas turbine components are highlighted.
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Chan, Kwai S., N. Sastry Cheruvu, and Gerald R. Leverant. "Coating Life Prediction for Combustion Turbine Blades." In ASME 1998 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/98-gt-478.

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A life prediction method for combustion turbine blade coatings has been developed by modeling coating degradation mechanisms including oxidation, spallation, and aluminum loss due to inward diffusion. Using this model, the influence of cycle time on coating life is predicted for GTD-111 coated with an MCrAlY, PtAl, or aluminide coating. The results are used to construct a coating life diagram that depicts failure and safe regions for the coating in a log-log plot of number of startup cycles versus cycle time. The regime where failure by oxidation, spallation, and inward diffusion dominates is identified and delineated from that dominated by oxidation and inward diffusion only. A procedure for predicting the remaining life of a coating is developed. The utility of the coating life diagram for predicting the failure and useful life of MCrAlY, aluminide, or PtAl coatings on the GTD-111 substrate is illustrated and compared against experimental data.
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Reports on the topic "Aluminide Coating"

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Sassi, Michel JPC, and David Senor. Tritium Diffusion in Fe-Al Aluminide Coating Bulk Phases. Office of Scientific and Technical Information (OSTI), September 2021. http://dx.doi.org/10.2172/1983611.

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Zhang, Ying. A Novel Low-Temperature Fiffusion Aluminide Coating for Ultrasupercritical Coal-Fried Boiler Applications. Office of Scientific and Technical Information (OSTI), December 2009. http://dx.doi.org/10.2172/1000505.

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Sassi, Michel JPC, Anne Chaka, David Senor, and Andrew Casella. First-Principles Study of Tritium Trapping by Point Defects in Fe-Al Aluminide Coating Phases. Office of Scientific and Technical Information (OSTI), September 2022. http://dx.doi.org/10.2172/1986035.

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Zhang, Y. Aluminide Coatings for Power-Generation Applications. Office of Scientific and Technical Information (OSTI), November 2003. http://dx.doi.org/10.2172/885900.

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Tortorelli, P. F., J. H. DeVan, B. A. Pint, I. G. Wright, and S. R. J. Saunders. High-temperature corrosion behavior of iron-aluminide alloys and coatings. Office of Scientific and Technical Information (OSTI), July 1995. http://dx.doi.org/10.2172/86958.

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Tortorelli, P. F., G. M. Goodwin, M. Howell, and J. H. DeVan. Weld-overlay iron-aluminide coatings for use in high-temperature oxidizing/sulfidizing environments. Office of Scientific and Technical Information (OSTI), September 1995. http://dx.doi.org/10.2172/102150.

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Kameda, J., T. E. Bloomer, Y. Sugita, A. Ito, and S. Sakurai. Mechanical properties of aluminized CoCrAlY coatings in advanced gas turbine blades. Office of Scientific and Technical Information (OSTI), July 1997. http://dx.doi.org/10.2172/505288.

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Yanar, N. M., G. H. Meier, and F. S. Pettit. The Effects of Oxidation-Induced Failures on Thermal Barrier Coatings with Platinum Aluminide and NiCoCrAlY Bond Coats. Fort Belvoir, VA: Defense Technical Information Center, December 2001. http://dx.doi.org/10.21236/ada397801.

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Regina, J. R. Evaluation of Iron Aluminide Weld Overlays for Erosion-Corrosion Resistant Boiler Tube Coatings in Low NOx Boilers. Office of Scientific and Technical Information (OSTI), May 2000. http://dx.doi.org/10.2172/814460.

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Regina, J. R., M. Lim, N. ,. DuPont, J. N. Barbosa, and A. R. Marder. Evaluation of Iron Aluminide Weld Overlays for Erosion-Corrosion Resistant Boiler Tube Coatings in Low NOx Boilers. Office of Scientific and Technical Information (OSTI), April 2000. http://dx.doi.org/10.2172/757303.

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