Results 181 to 190 of about 3,789 (233)
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Metallurgical Transactions A, 1986
A gas phase aluminum deposition was developed for Ni by CVD process. The specimen surface quickly came to equilibrium and remained close to equilibrium for the duration of the coating runs. The kinetics of the process was governed by a combination of solid and gas diffusion rates, and a steady-state appeared to exist at the gas phase-coating interface.
Wen-Pin Sun, H. J. Lin, Min-Hsiung Hon
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A gas phase aluminum deposition was developed for Ni by CVD process. The specimen surface quickly came to equilibrium and remained close to equilibrium for the duration of the coating runs. The kinetics of the process was governed by a combination of solid and gas diffusion rates, and a steady-state appeared to exist at the gas phase-coating interface.
Wen-Pin Sun, H. J. Lin, Min-Hsiung Hon
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Materials Science and Engineering: A, 1998
A processing route comprising of air induction melting (AIM) with protective cover and electroslag remelting (ESR) for production of iron aluminide $(Fe_3Al)$ alloys has been developed. The use of protective cover during AIM results in the minimization of hydrogen gas porosity and a significant reduction in the impurity levels (S, O and N).
R.S. Sundar +3 more
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A processing route comprising of air induction melting (AIM) with protective cover and electroslag remelting (ESR) for production of iron aluminide $(Fe_3Al)$ alloys has been developed. The use of protective cover during AIM results in the minimization of hydrogen gas porosity and a significant reduction in the impurity levels (S, O and N).
R.S. Sundar +3 more
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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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Nanostructured titanium aluminides
Materials Science and Engineering: A, 1994Abstract Binary TiAl and ternary TiAlNb alloys were mechanically alloyed in a Szegvari attritor or in a SPEX mill, to produce an amorphous phase and a B2/b.c.c. phase respectively. Consolidation of these powders by hot pressing, explosive compaction or hot isostatic pressing resulted in transformation of the as-milled phases; however, the product ...
C. Suryanarayana, F.H. Froes
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1996
Intermetallic compounds of nickel, iron, and titanium with aluminum have been studied extensively. Research on these materials has been published in the proceedings of several symposia and in journal articles. Detailed articles describing the development of nickel aluminides (Liu 1994; Noebe, Bowman, and Nathal 1994), iron aluminides (McKamey 1994 ...
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Intermetallic compounds of nickel, iron, and titanium with aluminum have been studied extensively. Research on these materials has been published in the proceedings of several symposia and in journal articles. Detailed articles describing the development of nickel aluminides (Liu 1994; Noebe, Bowman, and Nathal 1994), iron aluminides (McKamey 1994 ...
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Physical Metallurgy of Nickel Aluminides
ChemInform, 2003AbstractFor Abstract see ChemInform Abstract in Full Text.
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Hydrogenation Of The Titanium Aluminides
MRS Proceedings, 2008AbstractThe hydrogen absorption properties of the Ti-Al-Nb system intermetallics subjected by ball milling were studied. It was found that the hydrogenation of the titanium aluminides during ball milling in hydrogen atmosphere could occur at room temperature without any special requirements to the quality of hydrogen.
Nataiya Kazantseva +4 more
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Transition-metal aluminide formation: Ti, V, Fe, and Ni aluminides
Physical Review B, 1998The heats of formation for binary and ternary 3d transition-metal (Ti, V, Fe, and Ni) aluminides are calculated from first principles within the local density approximation. The calculated heats for Ti and Ni aluminides are typically within {approximately}0.02 eV/atom of the experimental values, while the Fe aluminides heats appear to be overestimated ...
R. E. Watson, M. Weinert
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Journal of Phase Equilibria and Diffusion, 2017
Iron aluminides form an interesting class of materials which combine excellent corrosion and oxidation resistance with good mechanical properties at moderate to high temperature (up to 500 °C). These materials, however, suffer from low room-temperature ductility (under 5% elongation in tension), which is mostly due to environmental effects.
Bruna N. Ramirez, Cláudio G. Schön
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Iron aluminides form an interesting class of materials which combine excellent corrosion and oxidation resistance with good mechanical properties at moderate to high temperature (up to 500 °C). These materials, however, suffer from low room-temperature ductility (under 5% elongation in tension), which is mostly due to environmental effects.
Bruna N. Ramirez, Cláudio G. Schön
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