Non-oriented electrical steel sheet, production method for non-oriented electrical steel sheet, electric motor and production method for electric motor
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United States of America Patent
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Oct 15, 2024
Grant Date -
Feb 1, 2024
app pub date -
Mar 30, 2022
filing date -
Mar 31, 2021
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Abstract
This non-oriented electrical steel sheet contains a base material having a chemical composition including, in mass %, Si: 3.2 to 4.5%, wherein the tensile strength is 550 MPa or more, and a ratio (P120B/Fe700B)B between a peak-to-peak height Fe700B of Fe at 700 eV and a peak-to-peak height P120B of P at 120 eV when crystal grain boundaries are measured through Auger electron spectroscopy is not more than twice a ratio (P120i/Fe700i)i between a peak-to-peak height Fe700i of Fe at 700 eV and a peak-to-peak height P120i of P at 120 eV when the inside of crystals is measured through Auger electron spectroscopy.
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