Cluster structure in Al-Si eutectic melt with solid Ni particles

Mudry, S.; Shtablavyi, I.

doi:10.30970/cma1.0051

Cited by 9 publications

(4 citation statements)

References 17 publications

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“…Concurrently, Al oxidation might have played a similar role. The melting temperatures for pure Al and the Al-Si eutectic system are 660.35 • C and 577 • C, respectively [29]. Al 2 O 3 formation can occur above 500 • C at the CVD chamber pressure (0.01 Torr).…”

Section: Resultsmentioning

confidence: 99%

The effect of barrier layer-mediated catalytic deactivation in vertically aligned carbon nanotube growth

Patole¹,

Yu²,

Shin³

et al. 2010

J. Phys. D: Appl. Phys.

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The effect of Al-barrier layer-mediated Fe-catalytic deactivation in vertically aligned carbon nanotube (CNT) growth was studied. The substrate surface morphology, catalytic diffusion and barrier layer oxidation were found to be dependent on the annealing temperature of the barrier layer, which ultimately affects CNT growth. The annealed barrier layer without complete oxidation was found to be suitable for top to bottom super aligned CNT arrays. The highest average CNT growth rate of up to 3.88 µm s −1 was observed using this simple approach. Details of the analysis are also presented.

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Section: Resultsmentioning

confidence: 99%

The effect of barrier layer-mediated catalytic deactivation in vertically aligned carbon nanotube growth

Patole¹,

Yu²,

Shin³

et al. 2010

J. Phys. D: Appl. Phys.

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“…Consequently, competition between aluminum and silicon atoms in their interaction with nickel can affect the process of structure formation in ternary melts. It was shown in Mudry and Shtablavyi (2008) that Al-Ni and Al 3 Ni-like chemical ordering mainly determines the structure features in (Al-Si) 1 − x Ni x alloys. Moreover, the chemically ordered structure groups can become the nuclei of intermetallic phases during crystallization.…”

Section: Introductionmentioning

confidence: 99%

Structure and phase transformations of amorphous-nanocrystalline Al-based alloy

et al. 2020

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Structure evolutions of rapidly quenched Al 65 Ni 10 Si 25 alloy were investigated using DTA, X-ray diffraction, SEM, and EDX methods. The processes of structural transformation from the as-quenched state into a nanocrystalline state were studied. The common and distinctive features of structural transformation processes induced by heating, isothermal annealing, and laser irradiation were observed. The formation of the nanoscale structure was observed in all ways of treatment. Two metastable phases that were formed at different temperatures were observed: hexagonal H-phase and Al 9 Ni 2 . The phase composition in the equilibrium state was observed as Al + Si + Al 3 Ni. A high-temperature phase of Al 6 Ni 3 Si was found in the alloy after laser heating that shows the possibility of "freezing" the high-temperature phases in the ribbon structure using laser treatment. The fractal structure was observed on the ribbon surface after irradiation.

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“…Investigation of the dependence of the value of structural parameter in liquid on the copper content in the alloy and temperature showed that the alloy eutectic composition (Al83Cu17) reduces the structural parameter in liquid in the temperature range 1023 -1253 K, and the presence of sharp peak indicates an ordered structure [9]. In [10], the peak was observed in the range of temperatures 835 -935 K. The authors of [9][10][11][12] notes, that slight overheating of alloys above the liquidus line leads to a significant reduction of complexes in a liquid. It is known that an increase in the cooling rate to 10 4 -10 5 K/s leads to the formation of a supersaturated solid solution and an increase in the content of the Al2Cu phase in a nonequilibrium eutectic [13][14].…”

Section: Introductionmentioning

confidence: 99%

Influence of Overheating and Cooling Rate on the Structure and Physicochemical Properties of Al-Cu Alloys

Filonenko

Бабаченко

Bartashevska

et al. 2019

SSP

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The effect of overheating of the melt and cooling rate of alloys of the Al-Cu system with a copper content of 25.0 – 36.0% ( mass.), the rest of the aluminum is investigated. It is shown that an overheating of the liquid at 50 – 100 K above the liquid-liquid line leads to the formation of a fine-dispersed eutectic structure and the inhibition of the formation of primary aluminum crystals in the pre-evacuation of alloys and the Al2Cu phase in hypereuvtectic alloys, in accordance. An increase in the melt overheating temperature by 150 K above the liquid-liquid line and the subsequent cooling at 103 – 104 K/s leads to the complete inhibition of the formation of primary crystals. An overheating of the melt on 100 – 150 K alloys above the liquid line and subsequent cooling with a velocity of 103 – 104 K /s reduces the rate of corrosion by 30 – 45% and increases the numerical value in 1.3 – 1.45 times the relative wear resistance, and the brittleness of alloys decreases in 1.2 – 1.35 times in comparison with the samples after casting.

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Cluster structure in Al-Si eutectic melt with solid Ni particles

Cited by 9 publications

References 17 publications

The effect of barrier layer-mediated catalytic deactivation in vertically aligned carbon nanotube growth

The effect of barrier layer-mediated catalytic deactivation in vertically aligned carbon nanotube growth

Structure and phase transformations of amorphous-nanocrystalline Al-based alloy

Influence of Overheating and Cooling Rate on the Structure and Physicochemical Properties of Al-Cu Alloys

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