Properties of intermetallic Ni–Al coatings deposited by high-velocity air–fuel spraying

Evdokimenko, Yu. I.; Kisel, V. M.; Buchakov, S. V.; Rogozinskaya, A. A.; Yurchenko, D. Z.; Litvín, Radek

doi:10.1007/s11106-011-9284-2

Cited by 2 publications

(1 citation statement)

References 4 publications

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“…Thermal spraying technologies are widely used to deposit intermetallic compounds [17,18]. The typical methods are atmospheric plasma spraying (APS), high-velocity oxygen fuel (HVOF) or detonation spraying.…”

Section: Introductionmentioning

confidence: 99%

Heat-Treatment of Aluminium-Nickel Composite Cold Sprayed Coating

et al. 2020

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Intermetallic compounds, especially aluminides, show good high-temperature strength, oxidation resistance, high melting points, and thus have received considerable attention as potential substitutes for superalloys in high-temperature applications. Aluminides are especially interesting because they are stable up to the critical temperature of ordering, which is close to the melting temperature. In the Al-Ni system, the most studied intermetallics are Ni3Al, NiAl and NiAl3. In the presented study, Al and Ni powders were mixed together with Al2O3 in various proportions to produce dense coatings by low-temperature cold spraying. Two types of post-deposition treatments were applied to produce aluminides, namely furnace heating and resistance spot welding. The former caused a long time diffusion while the latter a self-propagating high temperature synthesis. Both heating methods enabled formations of intermetallic phases. However, the furnace heating provides high porosity. The microstructure of the samples was analyzed by SEM (scanning electron microscope), EDS (energy dispersive X-ray spectroscopy) and XRD (X-ray diffraction) together with microhardness measurements.

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Section: Introductionmentioning

confidence: 99%

Heat-Treatment of Aluminium-Nickel Composite Cold Sprayed Coating

et al. 2020

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Magnetron-Sputtered Ni-Cr and Ti-Si Layers to Protect Ti-46Al-8Nb (at.%) Substrates Against Gas Absorption

Mitoraj-Królikowska

Godlewska

2019

J. of Materi Eng and Perform

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Ni-Cr and Ti-Si layers were deposited by magnetron sputtering on Ti-46Al-8Nb (at.%) substrates to suppress penetration of gases, which brings about undesirable changes in mechanical properties. Alloy samples with and without surface protection were subjected to interrupted oxidation at elevated temperature (700 and 800°C) for up to 300 h. Selected mechanical properties as well as adhesion of surface layers were examined in the as-received and oxidized state. Analytical techniques used to characterize surfaces and cross sections of the samples included scanning electron microscopy and light microscopy, energydispersive x-ray spectroscopy, x-ray photoelectron spectroscopy and x-ray diffraction. Both investigated layers were sufficiently adherent and effective in hindering gas absorption at 700°C; however, only Ni-Cr showed promising properties for higher-temperature applications.

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Properties of intermetallic Ni–Al coatings deposited by high-velocity air–fuel spraying

Cited by 2 publications

References 4 publications

Heat-Treatment of Aluminium-Nickel Composite Cold Sprayed Coating

Heat-Treatment of Aluminium-Nickel Composite Cold Sprayed Coating

Magnetron-Sputtered Ni-Cr and Ti-Si Layers to Protect Ti-46Al-8Nb (at.%) Substrates Against Gas Absorption

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