Ultra-Fast Current Aided Sintering of High Coercive Magnetic Powders and Composites

• Autorzy: Granek K. , Ziółkowski G. , Chrobak A. , Klimontko J. , Rak J. , Zivotsky O. , Gembalova L.

Identyfikatory

DOI

10.24425/amm.2019.127615

• Języki publikacji: EN

Abstrakty

EN

The paper refers to pulverization and sintering of the (Fe₈₀ Nb₆ B₁₄ )_0.88 Tb_0.12 high coercive alloy. The powder was sintered using the ultra-fast current aided method. It turned out that too long discharge time leads to appearing of a soft magnetic phase and simultaneously, decrease in coercivity of the compacted powder. Nevertheless, it was possible to establish preference technology parameters, preserving magnetic hardness of the alloy. As a final test, an impact of Co-powder addition on magnetic properties was studied. The introduced soft magnetic phase (about 20 wt. %) caused about 30% increase of magnetic remanence, which is a resultof direct exchange interactions between the two phases.

Słowa kluczowe

EN

magnetic composites; ultra-fast current sintering; high coercive alloys

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2019
• Tom: Vol. 64, iss. 2
• Strony: 791--796
• Opis fizyczny: Bibliogr. 11 poz., fot., rys., tab.

Twórcy

autor

Granek K.

• University of Silesia, Institute of Physics, 75 Pułku Piechoty 1a, 41-500 Chorzów, Poland

autor

Ziółkowski G.

• University of Silesia, Institute of Physics, 75 Pułku Piechoty 1a, 41-500 Chorzów, Poland

autor

Chrobak A.

• University of Silesia, Institute of Physics, 75 Pułku Piechoty 1a, 41-500 Chorzów, Poland

autor

Klimontko J.

• University of Silesia, Institute of Physics, 75 Pułku Piechoty 1a, 41-500 Chorzów, Poland

autor

Rak J.

• University of Silesia, Institute of Materials Science, 75 Pułku Piechoty 1a, 41-500 Chorzów, Poland

autor

Zivotsky O.

• VŠB - Technical University of Ostrava, Department of Physics, 17. Listopadu 15/2172, 708 33 Ostrava-Poruba, Czech Republic

autor

Gembalova L.

• VŠB - Technical University of Ostrava, Department of Physics, 17. Listopadu 15/2172, 708 33 Ostrava-Poruba, Czech Republic

Bibliografia

• [1] F. E. Luborsky, J. Appl. Phys. 37, 1091-1094 (1966).
• [2] [5] J.M.D. Coey, Scr. Mater. 67, 524-529 (2012).
• [3] J. J. Croat, J. F. Herbst, R. W. Lee, F. E. Pinkerton, J. Appl. Phys. 55, 2078-2081 (1984).
• [4] O. Gutfleisch, J. Phys. D: Appl. Phys. 33, R157-R172 (2000).
• [5] M. Sagawa, S. Fujimura, H. Yamamoto, Y. Matsuura, IEEE. Trans. Magn. 20 (5), 1584-1589 (1984).
• [6] N. Poudyal, J. Ping Liu, J. Phys. D: Appl. Phys. 46, 043001 (23pp) (2013).
• [7] [8] T. Kulik, J. Non-Cryst. Solids 287, 145-161 (2001).
• [8] A. Chrobak, G. Ziółkowski, N. Randrianantoandro, J. Alloys Comp. 583, 48-54 (2014). DOI: 10.1016/j.jallcom.2013.08.169
• [9] A. Chrobak, G. Ziółkowski, N. Randrianantoandro, J. Klimontko, D. Chrobak, K. Prusik, J. Rak. Acta Materialia 98 318-326 (2015). DOI:10.1016/j.actamat.2015.07.056
• [10] K. Granek, G. Ziółkowski, A. Chrobak, J. Klimontko, E. Talik, Acta Physica Polonica A 133 (3), 645, DOI:10.12693/APhy-sPolA.133.645
• [11] A. Chrobak, M. Karolus, G. Haneczok, Solid State Phenom. 163, 233-238 (2010).

Uwagi

EN

1. This work was supported by the Polish National Science Center by the grant 2015/19/B/ST8/02636.

PL

2. Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).