SOFT MAGNETIC IRON ALLOY PLATE, IRON CORE USING THE SOFT MAGNETIC IRON ALLOY PLATE, AND ROTATING ELECTRIC MACHINE
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United States of America
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Jan 30, 2025
app pub date -
Nov 18, 2022
filing date -
Nov 18, 2022
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Provided are a soft magnetic iron alloy plate that can suppress an excessive increase in Pi while exhibiting Bs higher than that of an electromagnetic pure iron plate and reduce the cost as compared with permendur, an iron core using the soft magnetic iron alloy plate, and a rotating electric machine. The soft magnetic iron alloy plate according to the present invention includes a chemical composition containing Co by 1 to 30 atom %, N by 0.2 to 10 atom %, an M component that can form an MN-type nitride by 0.5 to 5 atom %, with the balance being Fe and impurities, and when a cross section of the soft magnetic iron alloy plate is observed, nitride particles of the M component are deposited with an average particle size of 0.5 μm or less and a number density of 50 particles/100 μm2 or less.
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