Influence of temperature on structure and magnetic properties of powders alloys

• Autorzy: Nowosielski R. , Dobrzański L. A. , Konieczny J.
• Konferencja: 12th International Scientific Conference CAM3S'2006, 27-30th November 2006, Gliwice-Zakopane
• Języki publikacji: EN

Abstrakty

EN

Purpose: The paper presents the research results of nanocrystalline powders obtained by high energetic milling of amorphous ribbons based on cobalt Co77Si11.5B11.5 and Co68Fe4Mo1Si13.5B13.5. Design/methodology/approach: A 8000 SPEX CertiPrep Mixer/Mill high energy ball mill was applied to mill the ribbons both in "as quenched" state and heat treated. Observations of the structure of powders were made on the Opton DSM-940 scanning electron microscope. The change of powder material structure was measured with electron transmitting microscope JEOL JEM 200CX and X-ray analysis. The X-ray tests were realized with the use of the XRD 7 SEIFERT-FPM diffractometer. Findings: The analysis of the magnetic properties test results of the Co77Si11.5B11.5 and Co68Fe4Mo1Si13.5B13.5 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 powders of Co77Si11.5B11.5 and Co68Fe4Mo1Si13.5B13.5 alloys obtained by high-energy ball 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 annealing temperature and parameters of the high-energy ball milling process on structure and magnetic properties of soft magnetic powder materials obtained in this technique. Results and a discussion of the influence of high energy mechanical milling process on particle size and their distribution and annealing temperature of powders as well as structure and magnetic properties of investigated samples is presented. According to achieved results it has been attempted to describe the possibilities of improvement the soft magnetic properties of obtained powder materials.

Słowa kluczowe

EN

nanomaterials; powders; heat treatment; magnetic properties

PL

nanomateriały; proszki; obróbka cieplna; właściwości magnetyczne

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2007
• Tom: Vol. 20, nr 1-2
• Strony: 163--166
• Opis fizyczny: Bibliogr. 15 poz., fot., rys.

Twórcy

autor

Nowosielski R.

autor

Dobrzański L. A.

autor

Konieczny J.

• Division of Nanocrystalline and Functional Materials and Sustainable Pro-ecological Technologies, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18 a, 44-100 Gliwice, Poland

Bibliografia

• [1] T. Bitoh, A. Makino, A. Inoue, The effect of grain-size distribution on coercivity in nanocrystalline soft magnetic alloys, Journal of Magnetism and Magnetic Materials 272-276 (2004) 1445-1446.
• [2] A. Makino, A. Inoue, T. Masumoto, Soft magnetic properties of nanocrystalline Fe-M-B (M=Zr, Hf Nb) alloys with high magnetization, Nanostructured Materials Vol.: 6, 5-8 (1995) 985-988.
• [3] S. Lesz, R. Nowosielski, В. Kostrubiec, Z. Stokłosa, Crystallization kinetics and magnetic properties of Сo-based amorphous alloys, Journal of Achievements in Materials and Manufacturing Engineering, 16, 1-2 (2006) 35-39.
• [4] Y. Naitoh, T. Bitoh, T. Hatanai, A. Makino, A. Inoue, T. Masumoto, Applications of nanocrystalline soft magnetic Fe-M-B (M = Zr, Nb) alloys, Nanostructured Materials, Vol.: 8, Issue: 8, (1997) 987-995.
• [5] A. Inoue, A. Makino, Improvement of soft magnetic properties of nanocrystalline Fe-M-B (M-Zr and Nb) alloys and their applications, Nanostructured Materials, Vol. 9, l-8, (1997) 403-412.
• [6] A. Makino, T. Hatanai, A. Inoue, T. Masumoto, Nanocrystalline soft magnetic Fe-M-B (M=Zr, Hf, Nb) alloys and their applications, Materials Science and Engineering, Vol. 226-228, (1997) 594-602.
• [7] A. Makino, A. Inoue, T. Masumoto, Nanocrystalline soft magnetic Fe-M-B (M = Zr, Hf, Nb), Fe-M-O (M = Zr, Hf, rare earth) alloys and their applications, Nanostructured Materials, Vol.: 12, 5-8 (1999) 825-828.
• [8] G. Bordin, G. Buttino, A. Cecchetti, M. Poppi, Temperature dependence of magnetic properties of a Co-based alloy in amorphous and nanostructured phase, Journal of Magnetism and Magnetic Materials, 195 (1999) s. 583.
• [9] M. Vazquez, M. Knobel, M. L. Sanchez, R. Valenzuela, A. P. Zhukov, Giant magnetoimpedance effect in soft magnetic wires for sensor applications, Sensors and actuators A: Physical, Vol.: 59, Issue: 1-3 (1997) 20-29.
• [10] R. Nowosielski, L.A. Dobrzański, J. Konieczny, Structure and magnetic properties of powders soft magnetic nanocrystalline materials based cobalt, Proc. 11th Intern. Scientific. Conf. AMME'2002, Gliwice- Zakopane, (2002) 363-368.
• [11] R. Nowosielski, L. A. Dobrzański, S. Griner, J. Konieczny, Structure and magnetic properties of powders soft magnetic nanocrystalline materials obtained on combine thermal nanocrystallization and high-energy ball milling, process Proc. 11th Intern. Scientific Conf. AMME'2002, Gliwice-Zakopane, 2002, pp. 369-372.
• [12] P.G. Bercoff, H.R. Bertorello, High-energy ball milling of Ba-hexaferrite/Fe magnetic composite, Journal of Magnetism and Magnetic Materials, 187 (1998), 169-172.
• [13] L.A. Dobrzański, 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 Technolgy 155-156 (2004) 1943-1949.
• [14] R. Kolano, A. Kolano-Burian, Amorphous and nanocrystalline soft magnetic materials - New generation materials for electronics, Electrotechnical Review, 11 (2002) 241-248.
• [15] R. Nowosielski, L.A. Dobrzański, P. Gramatyka. S Griner, J. Konieczny, Magnetic properties of high-energy milled Fe78Si13B9 nanocrystalline powders and powder-based nanocomposites, Journal of Materials Processing Technology 157-158 (2004) 755-760.