Affiliation:
1. Mitsubishi Material Corp.
2. Mitsubishi Material PMG Corp.
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.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Cited by
50 articles.
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