Properties of Soft Magnetic Composite with Evaporated MgO Insulation Coating for Low Iron Loss

Gakuji Uozumi; Muneaki Watanabe; Ryoji Nakayama; Kazunori Igarashi; Koichiro Morimoto

doi:10.4028/www.scientific.net/MSF.534-536.1361

Paper Titles

Magnetic Properties of Amorphous FeSiB and Nanocrystalline Fe₇₃Si₁₆B₇Nb₃Cu₁ Soft Magnetic Sheets
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Microstructure and Magnetic Properties of Nd₂Fe₁₄B/α-Fe Nanocomposite Prepared by HDDR Combined with Mechanical Milling
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Magnetic Properties Obtained for Fe-50Co Alloy Produced by MIM with Elemental Powders
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Polyamine Group Assembled Silica Coated Ferrite Nanoparticle or Lambda DNA Detection
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Properties of Soft Magnetic Composite with Evaporated MgO Insulation Coating for Low Iron Loss
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Sm₂Fe₁₇ Prepared by Calciothermic Reduction-Diffusion Using Different Iron Powders
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Test Results of SMC Cores as Some Types of Motor Cores
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Cold and Detonation Spraying of TiB₂-Cu Nanocomposites
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Dispersion of Alloy 625 Nanoparticles in Ethanol
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HomeMaterials Science ForumMaterials Science Forum Vols. 534-536Properties of Soft Magnetic Composite with...

Properties of Soft Magnetic Composite with Evaporated MgO Insulation Coating for Low Iron Loss

Abstract:

MgO insulation coating with thickness of ca. 50nm was evaporated on the surface of iron powder and fabricated soft magnetic composite(SMC) with low iron loss. The MgO insulation coating had greater heat resistance than conventional phosphate insulation coating, which enabled stress relieving annealing at higher temperature (600C). Electrical and magnetic properties of SMC was examined. The electrical resistivity of the SMC annealed at 700C was 21μΩm. The iron loss at 50Hz for Bm = 1.5T was 5.34W, which was 40% of conventional SMC and was at the same level with laminated steel plate (t0.35). These results show that MgO insulation coating has enough heat resistance and adhesiveness to powder surface to obtain SMC with low iron loss.