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Preparation method of high-performance calcium lanthanum cobalt ferrite sintered magnet
The invention discloses a preparation method of a high-performance calcium-lanthanum-cobalt ferrite sintered magnet, and particularly relates to the field of magnetic materials, the preparation method comprises a burdening process, burdening is carried out according to an atomic general formula of Ca (1-x-y) SryLaxFe2n-zCoz, x, y, z and n representing a molar ratio are limited to 0.4 < = x < = 0.65, 0.05 < = y < = 0.2, 0.25 < = z < = 0.3, and 5.0 < = n < = 5.5; adding a lithium compound and boric acid; the preparation method comprises a pre-sintering procedure, a coarse crushing procedure, a fine crushing procedure, a tempering procedure, a vibration grinding procedure, an infiltration procedure, a forming procedure and a sintering procedure, powder obtained after fine crushing is subjected to tempering treatment, superfine powder is eliminated, meanwhile, adhesion caused by tempering is scattered through a vibration ball mill, the superfine powder is not generated, the proportion of the superfine powder in slurry for forming is reduced, and the forming quality is improved. And the orientation degree of a molded body is improved, so that the magnet performance is remarkably improved.
本发明公开了一种高性能钙镧钴铁氧体烧结磁体的制备方法，具体涉及磁性材料领域，包括配料工序，按照原子通式：Ca1‑x‑ySryLaxFe2n‑zCoz进行配料，其中x、y、z以及表示摩尔比的n限定在0.4≤x≤0.65、0.05≤y≤0.2、0.25≤z≤0.3、和5.0≤n≤5.5；添加锂化合物、硼酸；以及预烧工序、粗粉碎工序、细粉碎工序、回火工序、振磨工序、浸润工序、成型工序、烧结工序，通过对细粉碎后的粉末进行回火处理，消除超细粉，同时通过振动球磨机打散因回火导致的粘连且不产生超细粉，降低成型用的料浆中超细粉的比例，提高成型体的取向度，从而显著提升磁体性能。
Preparation method of high-performance calcium lanthanum cobalt ferrite sintered magnet
The invention discloses a preparation method of a high-performance calcium-lanthanum-cobalt ferrite sintered magnet, and particularly relates to the field of magnetic materials, the preparation method comprises a burdening process, burdening is carried out according to an atomic general formula of Ca (1-x-y) SryLaxFe2n-zCoz, x, y, z and n representing a molar ratio are limited to 0.4 < = x < = 0.65, 0.05 < = y < = 0.2, 0.25 < = z < = 0.3, and 5.0 < = n < = 5.5; adding a lithium compound and boric acid; the preparation method comprises a pre-sintering procedure, a coarse crushing procedure, a fine crushing procedure, a tempering procedure, a vibration grinding procedure, an infiltration procedure, a forming procedure and a sintering procedure, powder obtained after fine crushing is subjected to tempering treatment, superfine powder is eliminated, meanwhile, adhesion caused by tempering is scattered through a vibration ball mill, the superfine powder is not generated, the proportion of the superfine powder in slurry for forming is reduced, and the forming quality is improved. And the orientation degree of a molded body is improved, so that the magnet performance is remarkably improved.
本发明公开了一种高性能钙镧钴铁氧体烧结磁体的制备方法，具体涉及磁性材料领域，包括配料工序，按照原子通式：Ca1‑x‑ySryLaxFe2n‑zCoz进行配料，其中x、y、z以及表示摩尔比的n限定在0.4≤x≤0.65、0.05≤y≤0.2、0.25≤z≤0.3、和5.0≤n≤5.5；添加锂化合物、硼酸；以及预烧工序、粗粉碎工序、细粉碎工序、回火工序、振磨工序、浸润工序、成型工序、烧结工序，通过对细粉碎后的粉末进行回火处理，消除超细粉，同时通过振动球磨机打散因回火导致的粘连且不产生超细粉，降低成型用的料浆中超细粉的比例，提高成型体的取向度，从而显著提升磁体性能。
Preparation method of high-performance calcium lanthanum cobalt ferrite sintered magnet
一种高性能钙镧钴铁氧体烧结磁体的制备方法
LIU HUI (author) / WEI HANZHONG (author) / QUAN XIAOKANG (author) / XIE GUANGHUAN (author) / WANG JIQUAN (author)
2024-07-09
Patent
Electronic Resource
Chinese
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