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    Wyświetlanie 1-3 z 3
    Tytuł:
    The Influence of Heat Treatment on Soft Magnetic Properties of the $Fe_{60}Co_{10}Mo_{2}Y_{8}B_{20}$ Alloy
    Autorzy:
    Garus, S.
    Nabiałek, M.
    Garus, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1375479.pdf
    Data publikacji:
    2014-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.-y
    75.50.Kj
    75.30.Ds
    75.20.En
    75.47.Np
    75.50.Bb
    75.60.Ej
    Opis:
    This paper presents the results of studies on the magnetic properties of the $Fe_{60}Co_{10}Mo_{2}Y_{8}B_{20}$ alloy. The samples were fabricated in the form of plates by the injection-casting method. The structure of the investigated alloy, in the as-quenched state and after annealing, was verified by using X-ray diffractometry. The magnetization curves as a function of temperature were measured by a force magnetometer. From thermomagnetic curves the Curie temperature of the alloy was determined. As a critical parameter β was chosen to be equal to 0.36 for these calculations, it confirmed that the alloys may be considered as ferromagnetic of the Heisenberg type. Additionally, using a vibrating sample magnetometer the magnetization and coercivity field were studied (in magnetic field up to 2 T).
    Źródło:
    Acta Physica Polonica A; 2014, 126, 4; 960-962
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microstructure and magnetic properties of the classical amorphous alloys: Fe₆₁Co₁₀Y₈Me₁B₂₀ (where Me = W, Mo)
    Autorzy:
    Pietrusiewicz, P.
    Nabiałek, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1113170.pdf
    Data publikacji:
    2016-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Kj
    75.50.Bb
    75.50.Lk
    75.50.-y
    61.43.Dq
    61.43.-j
    68.37.Hk
    75.70.Ak
    Opis:
    A study has been conducted into the effects of substituting small quantities of alloying elements (tungsten and molybdenum) on the structure and magnetic properties of classical amorphous alloys that are based on the formula: Fe₆₁Co₁₀Y₈Me₁B₂₀. The structure of the resulting alloy samples was examined using X-ray diffraction, Mössbauer spectroscopy, and scanning electron microscopy. Based on the results of these studies, it was found that the obtained alloys were amorphous. Images from the scanning electron microscope were typical for amorphous materials. Cross-sectional images were homogeneous and did not contain "vein- and scale-type" precipitations. Studies examining the magnetic properties of the samples were carried out using a vibrating sample magnetometer. It was found that the alloy featuring the addition of tungsten exhibited a significantly greater saturation of magnetization and a substantially lower coercivity. This resulted from the fact that the atomic radius of tungsten is much larger than that of molybdenum, resulting in increased difference between the atomic constituents of the alloy; This, in turn, improves the glass-forming ability.
    Źródło:
    Acta Physica Polonica A; 2016, 130, 4; 920-922
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influences of Production Method and Minor Chemical Composition Changes on the Microstructure of the Alloy: $Fe_{62-x} Co_{10} Y_8 Mo_x B_{20}$ (where x=1 or 2)
    Autorzy:
    Nabiałek, M.
    Garus, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1398367.pdf
    Data publikacji:
    2016-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.-y
    75.50.Kj
    75.30.Ds
    75.20.En
    75.47.Np
    75.50.Bb
    75.60.Ej
    Opis:
    In this work, the results of studies concerning the structure of polycrystalline and amorphous alloys are presented. The samples were produced in a single-step production process, using two different production methods, and under a protective argon atmosphere. The quenching speed of the molten alloy was different for each of the production methods. Samples were subjected to analysis using X-ray diffractometry, scanning electron microscopy, and computer tomography. It has been shown that the samples manufactured with a higher cooling rate feature an amorphous structure; On the other hand, the samples obtained using the method with the lower cooling speed consist of crystallites of three crystalline phases with sizes of the order of μm. The amorphous samples exhibited a varied fracture surface as well as an increase in the contribution of pores to their volume, in comparison to the samples obtained at the lower cooling speed.
    Źródło:
    Acta Physica Polonica A; 2016, 130, 4; 1010-1012
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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