Effects of sintering and pressing conditions on the properties of manganese ferrite

Aida Faeghinia

doi:10.53063/synsint.2025.53260

Aida Faeghinia ¹

¹ Ceramics Department, Materials and Energy Research Center (MERC), P.O. Box 31779-83634, Karaj, Iran

https://doi.org/10.53063/synsint.2025.53260

Abstract

In the present work, zinc-manganese ferrite powder with stoichiometric composition Fe2O3-0.5ZnO-0.5Mn3O4 was prepared by mixing the constituent oxides and sintering them. The samples were shaped by two methods: dry powder pressing and slurry pressing with 10% water by weight (after drying), with a pressure of 50 MPa. The samples were sintered in a tube furnace in different oxidizing, neutral, and reducing atmospheres at 1050 °C. Under a neutral argon atmosphere, the porosity was reduced by about 2%, compared to the sintering samples in the oxide state. In order to achieve zero porosity, pressing using a slurry is more effective in small-sized parts. Samples sintered in nitrogen atmosphere, at the same temperature and sintering conditions, had smaller grain sizes compared to those sintered in hydrogen and oxide atmospheres. Based on microstructure comparison, sintering in a hydrogen atmosphere probably led to the formation of the gamma phase in ferrite. The change in magnetic permeability of the samples made by slurry and pressing methods was not significant; with increasing frequency, the permeability increased by about 20% in both cases.

Downloads

Download data is not yet available.

Keywords: Ferrite, Pressing, Sintering, Furnace atmosphere

References

[1] S. Bid, S.K. Pradhan, Preparation of zinc ferrite by high-energy ball-milling and microstructure characterization by Rietveld’s analysis, Mater. Chem. Phys. 82 (2003) 27–37. https://doi.org/10.1016/S0254-0584(03)00169-X.

[2] K. Masters, Spray drying handbook, George Godwin Ltd., London. (1985).

[3] J.T. Fell, J.M. Newton, Determination of tablet strength by the diametral-Compression test, J. Pharmacol. Sci. 59 (1970) 688–691. https://doi.org/ 10.1002/jps.2600590523.

[4] A.S. James, W.M. Dawson, T.J. Daviese, Compaction and Green Strength of Ferrite Powders, Powder Metall. 30 (1987) 267. https://doi.org/10.1179/pom.1987.30.4.267.

[5] N. Özkan, B.J. Briscoe, Characterization of die-pressed green compacts J. Eur. Ceram. Soc. 17 (1997) 697–711. https://doi.org/10.1016/S0955-2219(96)00090-8.

[6] R.C. Kambale, P.A. Shaikh, S.S. Kamble, Y.D. Koleka, Effect of cobalt substitution on structural, magnetic and electric properties of nickel ferrite. J. Alloys Compd. 478 (2009) 599–603. https://doi.org/10.1016/j.jallcom.2008.11.101.

[7] A.A. Hossain, S.T. Mahmud, M. Seki, T. Kawai, H. Tabata, Structural, electrical transport, and magnetic properties of Ni1−xZn xFe2O4. J. Magn. Magn. Mater. 312 (2007) 210–219. https://doi.org/10.1016/j.jmmm.2006.09.030.

[8] H. J. Glass, G. de With, M.J.M. de Graaf, R. J. A. van der Drift, Compaction of homogeneous (Mn, Zn)-ferrite potcores, J. Mater. Sci. 30 (1995) 3162–3170. https://doi.org/10.1007/BF01209232.

[9] J.M Heintz, F Weill, J.C Bernier, Characterization of agglomerates by ceramic powder compaction, Mater. Sci. Eng: A. 109, (1989) 271–277. https://doi.org/10.1016/0921-5093(89)90599-6.

[10] R.L.K. Matsumoto, Generation of Powder Compaction Response Diagrams, J. Amer. Ceram. Soc. 69 (1986) C-246– C-246. https://doi.org/10.1111/j.1151-2916.1986.tb07351.x.

[11] K.G. Webber, O. Clemens, V. Buscaglia, B. Malič, R.K. Bordia, et al., Review of the opportunities and limitations for powder-based high-throughput solid-state processing of advanced functional ceramics, J. European Ceramic Society, 44 (2024) 116780. https://doi.org/10.1016/j.jeurceramsoc.2024.116780.

[12] G. Kogias, Improvement of the properties of MnZn ferrite power cores through improvements on the microstructure of the compacts, J. Magn. Magn. Mater. 324 (2012) 235–241. https://doi.org/10.1016/j.jmmm.2011.07.055.

[13] P. Thakur, D. Chahar, S. Taneja, N. Bhalla, A. Thakur, A review on MnZn ferrites: Synthesis, characterization and applications, Ceram. Int. 46 (2020) 15740–15763. https://doi.org/10.1016/j.ceramint.2020.03.287.

[14] D.T. Gethin, N. Solimanjad, P. Doremus, D. Korachkin, Friction and its Measurement in Powder Compaction Processes, Modelling of Powder Die Compaction, Springer, London. (2008) 105–129. https://doi.org/10.1007/978-1-84628-099-3_8.

[15] H.J. Glass, Compaction Behavior of (MnZn)-Ferrite Granulate, Ph.D Thesis, Eindhoven University of Technology, the Netherlands, (1994). https://doi.org/10.6100/IR415055.

[16] M. Mirshekari, A. Ghasemi, B. Shokrollahi, Glycine-nitrate auto-combustion synthesis and magnetic properties of Mn-Zn ferrites, J. Magn. Magn. Mater. 650 (2024) 43–53. https://doi.org/10.1016/j.jmmm.2023.167089.

[17] A.K. Singh, S.K. Sharma, P.K. Sahoo, R.N. Basu, Preparation and magnetic properties of MnZn ferrite powder compacts by pressing and sintering, J. Magn. Magn. Mater. 536 (2024) 168193. https://doi.org/10.1016/j.jmmm.2024.168193.

[18] G. Rana, P. Dhiman, A. Kumar, D.-V.N. Vo, G. Sharma, et al., Recent advances on nickel nano-ferrite: A review on processing techniques, properties and diverse applications, Chem. Eng. Res. Des. 175 (2021) 182–208 https://doi.org/10.1016/j.cherd.2021.08.040.

[19] US20050098760A1Process for producing granules for being molded into ferrite, granules for being molded into ferrite, green body and sintered body US20050098760A1.

[20] H.J. Glass, G. de With, M.J.M. de Graaf, R.J.A. van der Drift, Compaction of homogeneous (Mn, Zn)-ferrite potcores, J. Mater. Sci. 30 (1995) 3162–3170. https://doi.org/10.1007/BF01209232.

[21] A. Rafferty, T. Prescott, D. Brabazon, Sintering behaviour of cobalt ferrite ceramic. Ceram. Int. 34 (2008) 15–21. https://doi.org/10.1016/j.ceramint.2006.07.012.

View more references

Cited By