Results 191 to 200 of about 746,875 (274)
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Thin Solid Films, 1977
Abstract The kinetics of phase layer growth during the aluminization of Fe and during subsequent heat treatment (homogenization) were investigated. Pack processing was employed for aluminization; the variables studied were temperature, time, amount of Al powder in the pack and the Al powder particle size.
R.W. Heckel +3 more
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Abstract The kinetics of phase layer growth during the aluminization of Fe and during subsequent heat treatment (homogenization) were investigated. Pack processing was employed for aluminization; the variables studied were temperature, time, amount of Al powder in the pack and the Al powder particle size.
R.W. Heckel +3 more
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Solidification of PTA aluminide coatings
International Journal of Materials Research, 2012Abstract Components can be protected with coatings tailored using plasma transferred arc to meet specific demands as mixtures of powders with an almost unlimited chemical composition can be processed. In this study, Ni, Fe and Nb aluminide coatings were processed from mixtures of elemental powders on steel substrates and on a Cu ...
Ana Sofia C. M. D'Oliveira +3 more
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Aluminide coatings on TiAl compound
Scripta Metallurgica, 1989Etude du depot de revetements d'aluminure sur le compose TiAl par des techniques de cementation en caisse et determination des phases formees dans les revetements.
Hiroshi Mabuchi +2 more
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Corrosion resistant modified aluminide coatings
Journal of Materials Engineering, 1988The requirements for increasing operating temperatures in gas turbines and fuel fired energy systems is linked to the use of protective coatings able to improve oxidation and corrosion resistance of structural materials. MCrA1Y-type overlay coatings have been especially designed to protect airfoils and other hot gas component superalloys against hot ...
R. Streiff, D. H. Boone
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Diffusion Model of Aluminide Coatings
CORROSION 2016, 2016Abstract The deleterious effects of corrosion can be mitigated by the application of coatings that can form a protective oxide layer. Halide Activated Pack Cementation (HAPC) is one such coating method in which a halide vapor is generated within a pack and undergoes reactions that ultimately result in the coating element, e.g., Al, being
Cory Gaines +4 more
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Surface morphology of diffusion aluminide coatings
Thin Solid Films, 1984Abstract The surface structure and morphology of aluminide coatings can be important in their performance both in oxidation or hot corrosion resistance and in their mechanical behavior. However, little information is available on the effects of aluminide coating deposition conditions on the coating surface.
R. Streiff +2 more
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Coatings
The slurry aluminizing process is widely employed to enhance the oxidation and corrosion resistance of nickel-based superalloys used in high-temperature environments such as gas turbines and aerospace engines.
Giulia Pedrizzetti +6 more
semanticscholar +1 more source
The slurry aluminizing process is widely employed to enhance the oxidation and corrosion resistance of nickel-based superalloys used in high-temperature environments such as gas turbines and aerospace engines.
Giulia Pedrizzetti +6 more
semanticscholar +1 more source
Aluminide Coatings on Superalloys
1984Nickel and cobalt superalloys currently used in advanced gas turbines are almost always protected by coatings against high temperature oxidation and hot corrosion. Aluminide coatings are generally obtained by low or high activity pack cementation processes.
C. Duret, R. Mevrel, R. Pichoir
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Aluminide Coatings for Nickel Based Superalloys
Surface Engineering, 2004A number of aluminide coatings have been developed which are modified by additional elements (noble metals, Cr and reactive elements such as Y and Hf). This results in a marked improvement in their corrosion resistance. In the present paper, aluminide coatings are reviewed. The hot corrosion and oxidation resistance of these coatings in laboratory and
M.R. Khajavi, M.H. Shariat, A. Pasha
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Nanoparticles in hafnium-doped aluminide coatings
Materials Letters, 2015Abstract The microstructure of the zirconium doped aluminide coating deposited on the nickel substrate by the CVD method is presented. TEM analysis proved that the s-NiAl and the γ′-Ni3Al are the main phases of the deposited coating. Some dislocations in the nickel substrate and in the coating were observed.
Jolanta Romanowska +3 more
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