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    • 6. 发明授权
    • Sintered magnet and rotating machine equipped with the same
    • 烧结磁体和旋转机配备相同
    • US07800271B2
    • 2010-09-21
    • US12361238
    • 2009-01-28
    • Matahiro KomuroYuichi SatsuYutaka MatsunobuTakashi Yasuhara
    • Matahiro KomuroYuichi SatsuYutaka MatsunobuTakashi Yasuhara
    • H02K1/27H01F1/057B05D5/00
    • H01F41/0293
    • The sintered magnet and the rotating machine equipped with the same are disclosed. The sintered magnet includes crystal grains of a ferromagnetic material consisting mainly of iron, and a fluoride compound or oxyfluoride compound layer containing at least one element selected from an alkali metal element, an alkali earth metal element, and a rare earth element. The layer is formed inside some of the crystal grains or in a part of a grain boundary part. An oxyfluoride compound or fluoride compound layer containing carbon in a stratified form is formed on an outermost surface of the crystal grains. The fluoride compound or oxyfluoride compound layer has a concentration gradient of carbon, contains at least one light rare earth element and at least one heavy rare earth element. The heavy rare earth element has a concentration lower than that of the light rare earth element.
    • 公开了烧结磁体和配备有烧结磁体的旋转机械。 烧结磁体包括主要由铁组成的铁磁材料的晶粒和含有选自碱金属元素,碱土金属元素和稀土元素中的至少一种元素的氟化合物或氟氧化物化合物层。 该层形成在一些晶粒内部或部分晶界部分中。 在晶粒的最外表面上形成含有分层形式的碳的氟氧化物化合物或氟化物化合物层。 氟化合物或氟氧化物化合物层具有碳的浓度梯度,含有至少一种轻稀土元素和至少一种重稀土元素。 重稀土元素的浓度低于轻稀土元素。
    • 7. 发明申请
    • Sintered Magnet Motor
    • 烧结磁铁
    • US20100007232A1
    • 2010-01-14
    • US12472130
    • 2009-05-26
    • Matahiro KomuroYuichi SatsuYutaka MatsunobuTakashi Yasuhara
    • Matahiro KomuroYuichi SatsuYutaka MatsunobuTakashi Yasuhara
    • H02K21/12
    • H02K1/02H01F1/0577H01F41/0293H02K1/2766
    • Disclosed herein is a sintered magnet motor having a sintered magnet rotor, the rotor comprising: a ferromagnetic material comprising iron as a main ingredient to be sintered; a fluorine compound or an oxyfluoride compound formed in the inside of a crystal grain or to a portion of a grain boundary of the ferromagnetic material; and at least one of alkalis, alkaline earth elements, and rare earth elements contained in the fluorine compound or the oxyfluoride compound; a portion of the fluorine compound or the oxyfluoride compound being distributed with a concentration gradient established from the surface to the inside of the ferromagnetic material, and a rare earth element being distributed with a concentration gradient established between the grain boundary surface and the parent phase of the ferromagnetic material, wherein the concentration distribution of the fluorine compound is asymmetrical when viewed from the pole center of the sintered magnet rotor. The amount of use of a fluorine compound can be decreased in this sintered magnet motor.
    • 本发明公开了一种具有烧结磁体转子的烧结磁体电动机,该转子包括:铁磁材料,其包含铁作为要烧结的主要成分; 形成在晶粒内部或铁磁材料的晶界部分的氟化合物或氟氧化合物; 和氟化合物或氟氧化物中含有的碱,碱土元素和稀土元素中的至少一种; 氟化合物或氟氧化合物的一部分以从铁磁材料的表面到内部建立的浓度梯度分布,并且稀土元素以在晶界表面和母相之间建立的浓度梯度分布 所述铁磁材料,其中当从所述烧结磁体转子的磁极中心观察时,所述氟化合物的浓度分布是不对称的。 在该烧结磁体电动机中,氟化合物的使用量可以降低。