Structure and properties of the powder obtained from the amorphous ribbon

• Autorzy: Konieczny J. , Dobrzański L. A. , Frąckowiak J. E.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The aim of the work is to investigate the magnetic properties of the cobalt based Co68Fe4Mo 1Si13.5 B13.5 amorphous alloy subjected to the isothermal annealing, high-energy milling and to a combination of these two technologies. Design/methodology/approach: The powder test piece obtained from the input amorphous ribbon in high-energy ball milling. Distributions of the magnetic hyperfine P(H) fields were determined for spectra smoothed in this way, by using the HFQS program, employing the Hesse-Rübartsch method. The diffraction examinations and examinations of thin foils were made on the JEOL JEM 200CX transmission electron microscope. Observations of the structure of powders were made on the Opton DSM-940 scanning electron microscope. Findings: The analysis of the magnetic properties test results of the of the Co68Fe4Mo 1Si13.5B13.5 powders obtained in the high-energy ball of milling process proved that the process causes significant decrease in the magnetic properties. The structure and magnetic properties of this material may be improved by means of a proper choice of parameters of this process as well as the final thermal treatment. Research limitations/implications: For the powders, further magnetical, structure and composition examinations are planed. Practical implications: The amorphous and nanocrystalline metal powders obtained by milling of metallic glasses feature an alternative to solid alloys and make it possible to obtain the ferromagnetic nanocomposites, whose shape and dimensions can be freely formed. Originality/value: The paper presents influence of parameters of the high-energy ball milling process on structure and magnetic properties of soft magnetic powder materials obtained in this technique. The paper compares structure and magnetic properties of the Co 68Fe4Mo 1Si13.5B13.5 alloy obtained in high-energy ball milling process and melt spinning technique.

Słowa kluczowe

EN

nanomaterials; Mössbauer spectrum; magnetic properties; high energy ball milling

PL

nanomateriały; zjawisko Mössbauera; właściwości magnetyczne; mielenie kulowe wysokoenergetyczne

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2006
• Tom: Vol. 18, nr 1-2
• Strony: 143--146
• Opis fizyczny: Bibliogr. 15 poz., rys., wykr.

Twórcy

autor

Konieczny J.

• Division of Materials Processing Technology and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland

autor

Dobrzański L. A.

• Division of Materials Processing Technology and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland

autor

Frąckowiak J. E.

• Institute of Material Science, University of Silesia, ul. Bankowa 12, 40-007 Katowice, Poland

Bibliografia

• [1] Y. Yoshizawa, S. Fujii, Microstructure and magnetic properties of FeCoMoBC alloys, Journal of Magnetism and Magnetic Materials 290–291 (2005) 1543–1546.
• [2] Y. Yoshizawa, Magnetic properties and applications of nanostructured soft magnetic materials, Scripta mater. 44 (2001) 1321–1325.
• [3] Gehrmann, Nickel-iron alloys with special soft magnetic properties for specific applications, Journal of Magnetism and Magnetic Materials 290–291 (2005) 1419–1422.
• [4] T. Kulik, Nanocrystaline magnetic soft materials obtained by crystallisation of metalic, Oficyna Wydawnicza Politechniki Warszawskiej, W-wa 1998. (in Polish).
• [5] A. Serebryakov, L. Voropaeva, Yu. Levin, N. Novokhatskaya, G. Abrosimova, Nanocrystallization of amorphous Co-Si-B alloys: effect of Fe+Nb additions, NanoStruct. Mater. 4, (1994) pp. 851.
• [6] V. Stelmukh , A. Gurov, L. Voropaeva, N. Novokhatskaya, A. Serebryakov, Nanocrystallization of amorphous Co-Si-B alloys with strong compound forming additions, Journal of Non-Crystalline Solids 192&193 (1995) pp. 570.
• [7] S.S. Sikder, M.A. Asgar, The kinetics of atomic and magnetic ordering of Co-based amorphous ribbons as affected by iron substitution, Termohimica Acta, 326 (1999) pp. 119.
• [8] L.A. Dobrzanski,; R. Nowosielski, J.Konieczny, The structure and magnetic properties of magnetically soft cobalt base nanocrystalline powders and nanocomposites with silicon binding, Journal of Materials Processing Technology, vol. 155-156, November 30, 2004, pp. 1943-1949.
• [9] R.Nowosielski, L.A. Dobrzanski, .; P. Gramatyka, S.Griner; J. Konieczny., Magnetic properties of high-energy milled Fe78Si13B9 nanocrystalline powders and powder-based nanocomposites, Journal of Materials Processing Technology, vol. 157-158, December 20, 2004, pp. 755-760.
• [10] D. Nuetzel, G. Rieger, J. Wecker, J. Petzold, M. Mueller, Nanocrystalline soft magnetic composite-cores with ideal orientation of the powder-flakes, Journal of Magnetism and Magnetic Materials, 196-197 (1999) pp. 323.
• [11] V. Leger, C. Ramiarinjaona, R. Barrue, R. Lebourgeois, Composite magnetic materials based on nanocrystalline powders for middle- and high-frequency applications up to 1MHz, Journal of Magnetism and Magnetic Materials., 191 (1999) pp. 169.
• [12] G.M. Jenkins, D.G. Watts, Spectral Analysis and its Applications, HOLDEN-DAY, Cambridge, 1969.
• [13] R.W. Hamming, Numerical Methods for Scientists and Engineers, Mc Graw-Hill Book Company, Inc, London, 196
• [14] Z. Bojarski and J. Frackowiak in: Proc. Conf. On Applied Cryst., Cieszyn, Ed. Z. Bojarski, J. Paduch, H. Krztoń, 1990, s. 114-119.
• [15] J. Hesse, A.J. Rubartsch, Model independent evaluation of overlapped Mossbauer spectra, Journal of Physics E (1974) 526.