Process optimization of in situ magnetic-anisotropy spark plasma sintering of m-type-based barium hexaferrite bafe12o19

Mohammed, H.G. and Albarody, T.M.B. and Susilawati, S. and Gohari, S. and Doyan, A. and Prayogi, S. and Bilad, M.R. and Alebrahim, R. and Saeed, A.A.H. (2021) Process optimization of in situ magnetic-anisotropy spark plasma sintering of m-type-based barium hexaferrite bafe12o19. Materials, 14 (10). ISSN 19961944

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Abstract

This paper introduces a new spark plasma sintering technique that is able to order crystalline anisotropy by in-series/in situ DC electric coupled magnetic field. The process control parameters have been investigated on the production of anisotropic BaFe12O19 magnets based on re-sulted remanence (Mr). Sintering holding time (H.T.), cooling rate (C.R.), pressure (P), and sintering temperature (S.T.) are optimized by Taguchi with L9 orthogonal array (OA). The remanent magnet-ization of nanocrystalline BaFe12O19 in parallel (Mr�) and perpendicular (Mr�) to the applied magnetic field was regarded as a measure of performance. The Taguchi study calculated optimum process parameters, which significantly improved the sintering process based on the confirmation tests of BaFe12O19 anisotropy. The magnetic properties in terms of Mr� and Mr� were greatly affected by sintering temperature and pressure according to ANOVA results. In addition, regression models were developed for predicting the Mr� as well as Mr� respectively. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Item Type: Article
Additional Information: cited By 4
Uncontrolled Keywords: Barium; Barium compounds; Electric sparks; Ferrite; Iron compounds; Magnetic anisotropy; Magnetic fields; Magnets; Nanocrystals; Optimization; Process control; Regression analysis; Spark plasma sintering, Applied magnetic fields; Barium hexaferrites; Coupled magnetic fields; Crystalline anisotropy; L9 orthogonal arrays; Measure of performance; Sintering temperatures; Spark plasma sintering techniques, Magnetoplasma
Depositing User: Mr Ahmad Suhairi UTP
Date Deposited: 10 Nov 2023 03:29
Last Modified: 10 Nov 2023 03:29
URI: https://khub.utp.edu.my/scholars/id/eprint/14958

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