GRADIENT RING-SHAPED BONDED MAGNET AND PREPARATION METHOD THEREFOR, AND MOTOR
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United States of America Patent
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Issued Date -
Jun 27, 2024
app pub date -
Oct 13, 2023
filing date -
Dec 27, 2022
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Abstract
Disclosed are a gradient ring-shaped bonded magnet and a preparation method therefor, and a motor. The gradient ring-shaped bonded magnet includes: a magnet body and at least one reinforcement layer. The magnet body is a ring-shaped cylinder; the reinforcement layer is in pressing fit with a surface of the magnet body; a material of the magnet body is a first permanent magnet, and a material of the reinforcement layer is a second permanent magnet; and the coercivity property, the remanence property and/or the maximum working temperature of the second permanent magnet are/is higher than those of the first permanent magnet.
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