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Tempering process for reducing loss of high-frequency ferrite core
The invention relates to a tempering process for reducing the loss of a high-frequency ferrite magnetic core, which comprises the following steps: tempering the high-frequency ferrite magnetic core at 200-400 DEG C for 0.5-5 hours, and then cooling in an inert atmosphere at the cooling speed of 0.1-0.5 DEG C/min to prepare the high-frequency low-loss ferrite magnetic core. The prepared ferrite magnetic core is tempered under the technological parameters, the internal stress of the magnetic core is eliminated, meanwhile, the loss of the high-frequency ferrite magnetic core is remarkably reduced, the power loss of the ferrite magnetic core (phi 12 * 7 * 5) prepared by the method under the conditions of 2MHz, 50mT and 100 DEG C is below 500kW/m < 3 >, the performance is excellent, and the cost is low. The method is suitable for large-scale application in the technical field of high-frequency low-power-loss soft magnetic ferrites.
本发明涉及一种降低高频铁氧体磁芯损耗的回火工艺，将高频铁氧体磁芯在200~400℃下回火0.5~5 h，随后在惰性气氛下降温冷却，冷速为0.1℃~0.5℃/min，制得高频低损耗铁氧体磁芯。本发明将制备得到的铁氧体磁芯在上述工艺参数下进行回火，消除磁芯内部应力的同时，显著降低了高频铁氧体磁芯的损耗，用该方法制得的铁氧体磁芯（Ф12×7×5）在2MHz、50mT、100℃下的功率损耗在500kW/m3以下，性能优异，适应于高频低功率损耗软磁铁氧体技术领域的大规模应用。
Tempering process for reducing loss of high-frequency ferrite core
The invention relates to a tempering process for reducing the loss of a high-frequency ferrite magnetic core, which comprises the following steps: tempering the high-frequency ferrite magnetic core at 200-400 DEG C for 0.5-5 hours, and then cooling in an inert atmosphere at the cooling speed of 0.1-0.5 DEG C/min to prepare the high-frequency low-loss ferrite magnetic core. The prepared ferrite magnetic core is tempered under the technological parameters, the internal stress of the magnetic core is eliminated, meanwhile, the loss of the high-frequency ferrite magnetic core is remarkably reduced, the power loss of the ferrite magnetic core (phi 12 * 7 * 5) prepared by the method under the conditions of 2MHz, 50mT and 100 DEG C is below 500kW/m < 3 >, the performance is excellent, and the cost is low. The method is suitable for large-scale application in the technical field of high-frequency low-power-loss soft magnetic ferrites.
本发明涉及一种降低高频铁氧体磁芯损耗的回火工艺，将高频铁氧体磁芯在200~400℃下回火0.5~5 h，随后在惰性气氛下降温冷却，冷速为0.1℃~0.5℃/min，制得高频低损耗铁氧体磁芯。本发明将制备得到的铁氧体磁芯在上述工艺参数下进行回火，消除磁芯内部应力的同时，显著降低了高频铁氧体磁芯的损耗，用该方法制得的铁氧体磁芯（Ф12×7×5）在2MHz、50mT、100℃下的功率损耗在500kW/m3以下，性能优异，适应于高频低功率损耗软磁铁氧体技术领域的大规模应用。
Tempering process for reducing loss of high-frequency ferrite core
一种降低高频铁氧体磁芯损耗的回火工艺
ZHANG WEI (author) / WANG YUWEI (author) / CUI FENGXING (author) / GAO PANG (author) / ZHANG XIANG (author) / BU JIAN (author)
2024-07-30
Patent
Electronic Resource
Chinese
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