Effect Of Heat-Treatment On Microstructure And Magnetic Properties Of Nanocrystallized Mn-Zn Ferrite Powders

• Autorzy: Lee W. H. , Hong C. S. , Chang S. Y.

Identyfikatory

DOI

10.1515/amm-2015-0128

Warianty tytułu

PL

Wpływ obróbki cieplnej na mikrostrukturę i właściwości magnetyczne nanokrystalicznych proszków ferrytu Mn-Zn

• Języki publikacji: EN

Abstrakty

EN

The initial ferrite powders were subjected to high energy ball milling at 300rpm for 3h, and subsequently heat-treated at 573-1273K for 1h. Based on the observation of microstructure and measurement of magnetic properties, the heat-treatment effect was investigated. The size of initial powders was approximately 70μm. After milling, the powders with approximately 230nm in size were obtained, which were composed of the nano-sized particles of approximately 15nm in size. The milled powders became larger to approximately 550nm after heat-treatment at 973K. In addition, the size of particles increased to approximately 120nm with increasing temperature up to 973K. The coercivity of initial powders was almost unchanged after milling, whereas the saturation magnetization increased. As the heat-treatment temperature increased, the saturation magnetization gradually increased and the maximum coercivity was obtained at 773K.

Słowa kluczowe

EN

high energy ball milling; nanosized particles; crystallite size; magnetic properties

PL

frezowanie kulowe; nanocząstki; wielkości krystalitów; właściwości magnetyczne

• 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: 2015
• Tom: Vol. 60, iss. 2B
• Strony: 1347--1350
• Opis fizyczny: Bibliogr. 10 poz., rys.

Twórcy

autor

Lee W. H.

• Department of Advanced Materials Engineering, Sejong University, Seoul 143-747, Korea

autor

Hong C. S.

• Department of Materials Engineering, Korea Aerospace University, Gyeonggi-Do, 412-791, Korea

autor

Chang S. Y.

• Department of Materials Engineering, Korea Aerospace University, Gyeonggi-Do, 412-791, Korea

Bibliografia

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• [8] S. M. Hong, E. K. Park, K. Y. Kim, J. J. Park, M. K. Lee, C. K. Rhee, J. K. Lee, Y. S. Kwon, J. Kor. Powd. Met. Inst. 19, 32-39 (2012).
• [9] H. P. Klug, L. E. Alexander, Joohn Wiley and Sons, X-ray Diffraction Procedures for Polycrystalline and Amorphous Materials, New York 1997.
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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.