Temat: 64.70.pe - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Thermal Stability and Mechanism of Thermally Induced Crystallization of $Fe_{73.5}Cu_1Nb_3Si_{15.5}B_7$ Amorphous Alloy
Autorzy:: Vasić, M.
Minić, D.
Blagojević, V.
Žák, T.
Pizúrová, N.
David, B.
Powiązania:: https://bibliotekanauki.pl/articles/1402117.pdf
Data publikacji:: 2015-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 64.70.dg
64.70.kd
64.70.pe
Opis:: Investigation of thermal stability of the alloy revealed stepwise crystallization process, manifested by two distinct complex exothermic peaks in differential scanning calorimetry curves. Kinetic parameters of individual crystallization steps were found using the Kissinger and Vyazovkin methods. Structural characterization of thermally treated samples showed formation of different iron-based phases including α-Fe(Si), Fe₂B, Fe₁₆Nb₆Si₇ and Fe₂Si and some metastable intermediary species. Morphology characterization of the surface and cross-section of the thermally treated samples showed granulated structure composed of several different phases and indicated occurrence of impingement effects during crystal growth. Value of estimated lifetime suggested very high stability against crystallization at room temperature and abrupt decrease of lifetime with temperature increase.
Źródło:: Acta Physica Polonica A; 2015, 128, 4; 657-660
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Relaxation in Metallic Glass $Ni_{36.5}Zr_{63.5}$
Autorzy:: Sulejmanović, S.
Mihać, T.
Bikić, S.
Bajrović, N.
Powiązania:: https://bibliotekanauki.pl/articles/1537960.pdf
Data publikacji:: 2010-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 64.70.dg
64.70.pe
72.15.Cz
Opis:: The metallic glass ribbons of $Ni_{36.5}Zr_{63.5}$ were prepared by melt spinning. The samples have a large frozen-in structural disorder and in comparison with their crystalline state, a very high electrical resistivity. They are metastable and they relax structurally towards more stable state whenever atoms attain noticeable mobility. As the most structurally sensitive property the electrical resistivity of these samples was used to follow the relaxation process from room temperature to 673 K. To complete the investigation of structural relaxation the electrical resistance of as-quenched, annealed and about twenty years aged $Ni_{36.5}Zr_{63.5}$ samples was measured in the temperature range from 77 K to 275 K. The obtained results were presented graphically.
Źródło:: Acta Physica Polonica A; 2010, 117, 5; 817-819
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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