Physical properties of Al–R melts

Сидоров, В. Е.; Gornov, O.; Быков, В. А.; Son, L.; Ryltsev, R. E.; Упоров, С. А.; Shevchenko, V.; Кононенко, В. И.; Shunyaev, K. Yu.; Ilynykh, N.; Moiseev, G. K.; Kulikova, T. V.; Sordelet, D. J.

doi:10.1016/j.msea.2006.02.437

Cited by 38 publications

(22 citation statements)

References 7 publications

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“…This result agrees with the conjecture concerning the electronic structure and chemical short-range order of Al-RE-based alloys which was suggested in [23][24][25]. The detailed investigation of this issue is the matter of separate work.…”

Section: Resultssupporting

confidence: 91%

Crystallization kinetics of Al86Ni8Gd6 amorphous alloy

Kulikova

Быков

Belozerova

et al. 2013

Journal of Non-Crystalline Solids

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We study structure and crystallization kinetics of melt-spun Al 86 Ni 8 Gd 6 amorphous alloy. The X-ray diffraction and transmission electron microscopy detect pronounced nanoscale clusters in the structure of the amorphous state. Differential scanning calorimetry analysis shows complex three-stage crystallization of the amorphous alloy at different heating rates. The high temperature X-ray diffraction analysis reveals crystallization mechanism with competing reactions of intermetallic compounds formation. Summarizing the experimental data, we introduce multiversion non-linear kinetic model that describes the crystallization process completely and allows us to determine kinetic parameters with high accuracy. The activation energies obtained reveal relatively stable amorphous state.

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Section: Resultssupporting

confidence: 91%

Crystallization kinetics of Al86Ni8Gd6 amorphous alloy

Kulikova

Быков

Belozerova

et al. 2013

Journal of Non-Crystalline Solids

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“…It means that in these compounds rare earth atoms exist not in form R 3+ , as it was previously thought [8,9,11], but create some directed 01023-p.3 EPJ Web of Conferences bonds of covalent type with aluminum atoms. The situation is similar to described in [1,4]. 4f-electrons are involved into bonds formation and that is why their partial delocalization from REM atoms takes place.…”

Section: Discussionsupporting

confidence: 53%

“…to formation of global nets and chains that provide high glass forming ability of the melt. Our previous experimental and theoretical investigations showed that in liquid dilute Al-REM alloys and first intermetallic compounds Al 11 REM 3 or Al 3 REM, associates Al 2 REM exist even at high overheating above liquidus [1,4]. From thermodynamics modeling results it comes that they can exist in melts even at temperatures higher than 2000 K [5].…”

Section: Introductionmentioning

confidence: 99%

“…According to contemporary views, the main cluster forming element for Al-REM melts is the so-called "quasimolecules" Al 2 REM [1][2][3][4]. These associates have a tendency to polymerization, i.e.…”

Section: Introductionmentioning

confidence: 99%

“…For dilute Al-REM alloys and first intermetallic compounds an important fact was discovered -the value of effective magnetic moment per rare earth atom is substantially lower than for the free ion R 3 + [1,3,4]. The idea was suggested that in alloys and compounds with aluminum REM atoms exist not in trivalent ion form, but create chemical bonds of covalent -metallic type with the participation of 4f-electrons.The involvement of 4f-electrons into chemical bonds formation affects significantly the effective magnetic moment per REM atom.…”

Section: Introductionmentioning

confidence: 99%

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Magnetic susceptibility and parameters of electronic structure of Al₂R (R = La, Ce, Sm, Gd, Dy, Ho, Yb) intermetallic compounds at high temperatures.

Uporova

Упоров

Сидоров

et al. 2011

EPJ Web of Conferences

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Abstract. Magnetic properties of intermetallic compounds Al 2 R (R = La, Ce, Sm, Gd, Dy, Ho, Yb) are investigated in a wide temperature (20-1650 0 C) and magnetic fields (0,3-1,3 T) ranges. For all the samples the increase of magnetic susceptibility with temperature growth was found in liquid state. From experimental data several parameters of electronic structure of the compounds were obtained. In particular, it was shown that the values of effective magnetic moment per rare earth atom in compounds are lower than for ion R 3+ .

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