Nanosized mechanocomposites and solid solution in immiscible metal systems

Lyakhov, N. Z.; Grigorieva, Tatiana F.; Barinova, A. P.; Lomayeva, S.F.; Yelsukov, E. P.; Ul’yanov, A. L.

doi:10.1023/b:jmsc.0000039258.56606.55

Cited by 21 publications

(6 citation statements)

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“…For the Bi-Fe 78 B 13 Si 9 system, the mixing enthalpies of Bi-Fe [17], Bi-B [18], and Bi-Si [19] are all positive, implying lacking of chemical affinity between Bi and the components in the Fe 78 B 13 Si 9 alloy. Therefore, only physical interaction was developed at the interface and molten Bi cannot spread on the Fe 78 B 13 Si 9 surfaces, regardless of the changes in their structures, phases and grain sizes as a function of T a .…”

Section: Resultsmentioning

confidence: 99%

Wettability of amorphous and nanocrystalline Fe78B13Si9 substrates by molten Sn and Bi

et al. 2011

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The wettability of amorphous and annealing-induced nanocrystalline Fe 78 B 13 Si 9 ribbons by molten Sn and Bi at 600 K was measured using an improved sessile drop method. The results demonstrate that the structural relaxation and crystallization in the amorphous substrates do not substantially change the wettability with molten Bi because of their invariable physical interaction, but remarkably deteriorate the wettability and interfacial bonding with molten Sn as a result of changing a chemical interaction to a physical one for the atoms at the interface.

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Section: Resultsmentioning

confidence: 99%

Wettability of amorphous and nanocrystalline Fe78B13Si9 substrates by molten Sn and Bi

et al. 2011

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“…Over the last years it has become apparent that compounds ground or synthesized by high-energy ball milling often show a change in their properties, e.g., an enhanced ionic conductivity, compared to their micro- or monocrystalline counterparts prepared by conventional solid state synthesis routines. − Furthermore, the synthesis of compounds conducted by mechanical treatment of the starting materials, the so-called mechanosynthesis, is known to be a very efficient technique for the preparation of metastable, partly new, compounds. − A well-known specialty of this technique is the preparation of solid solutions of normally immiscible or hardly miscible phases. − In this respect, the BaF 2 –LaF 3 system is of particular interest. Ba 1– x La x F 2+ x crystallizes in the fluorite structure (space group Fm 3̅ m ) for compositions x ≲ 0.55 , and in the tysonite structure (space group P 3̅ c 1) for x ≳ 0.85 , .…”

Section: Introductionmentioning

confidence: 99%

Mechanosynthesis of the Fast Fluoride Ion Conductor Ba_1–xLa_xF_2+x: From the Fluorite to the Tysonite Structure

et al. 2014

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Ba 1−x La x F 2+x covering the whole range of compositions was synthesized by high-energy ball milling of mixtures of BaF 2 and LaF 3 at ambient temperature. The compounds obtained in this way crystallize in the cubic fluorite structure in the range from 0 ≤ x ≲ 0.775 which extends the range for the fluorite-type Ba 1−x La x F 2+x covered up to now (0 ≤ x ≤ 0.55) considerably. By employing 19 F NMR spectroscopy and X-ray (total) scattering, indications for a continuous change from the fluorite (BaF 2) to the tysonite structure (LaF 3) were found. The mechanosynthesized samples showed slightly higher fluoride ion conductivities for the samples with x ≤ 0.40 and clearly smaller conductivities in the case of the samples with x ≥ 0.85 than reported for their monocrystalline counterparts. Two conductivity maxima at x ≈ 0.40 and x ≈ 0.85 and a conductivity minimum at x ≈ 0.75 were observed for the mechanosynthesized Ba 1−x La x F 2+x. For the samples with 0.10 ≤ x ≤ 0.50, exhibiting a dc conductivity in the order of 10 −5 S/cm at 400 K, all fluoride ions seem to be highly mobile at temperatures beyond 453 K. The decrease of the ionic conductivity observed for Ba 1−x La x F 2+x with increasing x in the range from x ≈ 0.50 to x ≈ 0.75 is accompanied by a change of the diffusion behavior and a decrease of the ratio of highly mobile to nonmobile or slow fluoride ions.

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“…This phenomenon has also been observed in the decomposed Co-Cu solid solution [25]. Lyakhov et al [26] have also observed by Mössbauer spectrum that the Fe-Bi sample firstly formed nanosized mechanocomposite even the XRD peaks of bismuth became invisible in the diffraction patterns. These lead us to give a more careful analysis of the structure for the asmilled sample.…”

Section: Resultsmentioning

confidence: 53%

W–Sn solid solution synthesized by mechanical alloying at room temperature

Xia

Shen

et al. 2008

Journal of Alloys and Compounds

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Nanosized mechanocomposites and solid solution in immiscible metal systems

Cited by 21 publications

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Wettability of amorphous and nanocrystalline Fe78B13Si9 substrates by molten Sn and Bi

Wettability of amorphous and nanocrystalline Fe78B13Si9 substrates by molten Sn and Bi

Mechanosynthesis of the Fast Fluoride Ion Conductor Ba_1–xLa_xF_2+x: From the Fluorite to the Tysonite Structure

W–Sn solid solution synthesized by mechanical alloying at room temperature

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Nanosized mechanocomposites and solid solution in immiscible metal systems

Cited by 21 publications

References 0 publications

Wettability of amorphous and nanocrystalline Fe78B13Si9 substrates by molten Sn and Bi

Wettability of amorphous and nanocrystalline Fe78B13Si9 substrates by molten Sn and Bi

Mechanosynthesis of the Fast Fluoride Ion Conductor Ba1–xLaxF2+x: From the Fluorite to the Tysonite Structure

W–Sn solid solution synthesized by mechanical alloying at room temperature

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Mechanosynthesis of the Fast Fluoride Ion Conductor Ba_1–xLa_xF_2+x: From the Fluorite to the Tysonite Structure