Autor: Wysłocki, J. J. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Phase constitution of an LaFe11.0Co0.8(Si0.4Al0.6)1.2 alloy investigated by Mössbauer spectroscopy
Autorzy:: Gębara, P.
Pawlik, P.
Wysłocki, J. J.
Szwaja, M.
Powiązania:: https://bibliotekanauki.pl/articles/147912.pdf
Data publikacji:: 2013
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: magnetocaloric materials
Mössbauer spectroscopy
Opis:: In the present work the phase constitution and magnetic ordering of the magnetocaloric LaFe11.0Co0.8(Si0.4Al0.6)1.2 alloy in the as-cast state and after annealing at 1323 K for 1 h (in case of ribbons) and 49 days (in case of bulk) were studied. For bulk and ribbon samples in as-cast state three crystalline phases were identified: dominant ferromagnetic alfa-Fe, minor ferromagnetic La(Fe,Co)Si and traces of paramagnetic La(Fe,Si)13 phase. Appropriate heat treatment resulted in the evolution of phase constitution of the alloy, where two crystalline phases were developed: the dominant paramagnetic La(Fe,Si)13 phase and a minor fraction of the ferromagnetic alfa-Fe for both bulk and ribbon samples.
Źródło:: Nukleonika; 2013, 58, 1; 113-116
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Phase structure of the nanocrystalline Nd2Fe14B/alfa-Fe magnets with different grain
Autorzy:: Wnuk, I.
Wysłocki, J.
Przybył, A.
Powiązania:: https://bibliotekanauki.pl/articles/148342.pdf
Data publikacji:: 2007
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: Nd2Fe14B + alfa-Fe nanocrystalline magnets
Mössbauer spectroscopy
magnetic properties
Opis:: The effect of the contents of the magnetically hard and magnetically soft phases on the magnetic properties of Nd2Fe14B + alfa-Fe nanocrystalline magnets, as produced by the method of mechanical alloying, has been established. The phase composition of specimens was determined using X-ray diffractometry and Mössbauer spectroscopy. The Mössbauer examination showed that as the powder milling times increased, the content of the Nd2Fe14B phase increased from 42.8% (after the milling time of 10 h, with a grain size of 44.8 nm) to 66.3% (after the milling time of 48 h, with a grain size of 37.3 nm) and then decreased to 40.3% after 120 h of milling. On the other hand, the content of the magnetically soft phase alfa-Fe initially decreased (from 27.7%), reaching a minimum after the milling time of 48 h (17.4%) and then increasing to 36.9% after 120 h of milling.
Źródło:: Nukleonika; 2007, 52, supl. 1; 85-88
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Phase composition investigations of the Nd-Fe alloys processed by various methods
Autorzy:: Pawlik, K.
Wysłocki, J.
Olszewski, J.
Bodak, O.
Pawlik, P.
Powiązania:: https://bibliotekanauki.pl/articles/147201.pdf
Data publikacji:: 2004
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: Nd-Fe binary system
intermetallic compounds
Mössbauer spectroscopy
phase composition
Opis:: Abstract In the paper, the phase composition changes for the series of Nd10+xFe90 x (x = 0; 0.5; 1; 1.5; 2; 2.5; 3; 3.5; 4) binary alloys, produced by long time annealing and rapid solidification methods were investigated. X-ray diffractometry and Mössbauer spectroscopy were used to determine the phase composition of the alloys. These structural investigations revealed the existence of two crystalline phases in the long time annealed samples: bcc á-Fe and rhombohedral Nd2Fe17 of the Th2Zn17-type structure. Furthermore, the single phase region was observed for the Nd concentration above 12 at.%. For the rapidly solidified ribbon samples, a low volume fraction of the alfa-Fe and the crystalline phase of hexagonal symmetry were detected.
Źródło:: Nukleonika; 2004, 49,suppl.3; 27-31
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Ordering of alfa-FeCo phase in the nanocrystalline Fe83-xCoxNb3B13Cu1 (x = 6, 25 or 41.5) alloy
Autorzy:: Zbroszczyk, J.
Młyńczyk, A.
Olszewski, J.
Ciurzyńska, W.
Wysłocki, B.
Perduta, K.
Lelątko, J.
Nabiałek, M.
Powiązania:: https://bibliotekanauki.pl/articles/148219.pdf
Data publikacji:: 2007
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: nanocrystalline alloys
microstructure
ordering
Mössbauer spectroscopy
Opis:: The microstructure and ordering of alfa-FeCo phase of the nanocrystalline Fe83 xCoxNb3B13Cu1 (x = 6, 25 or 41.5) alloys were investigated. We have stated that á-FeCo phase is atomically ordered in the Fe83 xCoxNb3B13Cu1 (x = 25 or 41.5) samples crystallized by the heat treatment in a furnace. However, after flash annealing (by current or laser) that phase is disordered. Moreover, we have found that Co concentration in the crystalline alfa-FeCo phase strongly depends on Co content in the as-quenched ribbons. The annealing conditions influence also the grain diameter of the crystalline phase. In the nanocrystalline alloys obtained by a flash annealing of the amorphous ribbons finer grains are present.
Źródło:: Nukleonika; 2007, 52, supl. 1; 29-32
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

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