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Preparation method of high-performance permanent magnetic ferrite
The invention discloses a preparation method of a high-performance permanent magnetic ferrite, which comprises the following steps: placing permanent magnetic ferrite pre-sintering material powder in a ball milling tank, respectively adding calcium carbonate, sodium bicarbonate, tungsten oxide, barium carbonate and silica powder, uniformly mixing to prepare a mixed material, adding water into the mixed material, carrying out ball milling to prepare mixed slurry, and drying the mixed slurry to obtain the high-performance permanent magnetic ferrite. Precipitating and filtering the mixed slurry to prepare molded slurry, performing injection molding on the molded slurry to prepare a molded green body, and sintering the molded green body to prepare a permanent magnetic ferrite magnet blank. According to the preparation method of the high-performance permanent magnetic ferrite, the residual magnetism of the permanent magnetic ferrite is improved, and high intrinsic coercive force is kept.
本发明公开了一种高性能永磁铁氧体的制备方法，该方法包括以下步骤：取永磁铁氧体预烧料粉置于球磨罐中，分别加入碳酸钙、碳酸氢钠、氧化钨、碳酸钡以及硅微粉，混合均匀后制成混合物料，混合物料中加水，经球磨制备得混合浆料，混合浆料经沉淀过滤制备得成型料浆，成型料浆经注模成型后制备得成型生坯，成型生坯经烧结后，制备得永磁铁氧体磁体毛坯。本发明提供一种高性能永磁铁氧体的制备方法，既提高永磁铁氧体剩磁又保持较高内禀矫顽力。
Preparation method of high-performance permanent magnetic ferrite
The invention discloses a preparation method of a high-performance permanent magnetic ferrite, which comprises the following steps: placing permanent magnetic ferrite pre-sintering material powder in a ball milling tank, respectively adding calcium carbonate, sodium bicarbonate, tungsten oxide, barium carbonate and silica powder, uniformly mixing to prepare a mixed material, adding water into the mixed material, carrying out ball milling to prepare mixed slurry, and drying the mixed slurry to obtain the high-performance permanent magnetic ferrite. Precipitating and filtering the mixed slurry to prepare molded slurry, performing injection molding on the molded slurry to prepare a molded green body, and sintering the molded green body to prepare a permanent magnetic ferrite magnet blank. According to the preparation method of the high-performance permanent magnetic ferrite, the residual magnetism of the permanent magnetic ferrite is improved, and high intrinsic coercive force is kept.
本发明公开了一种高性能永磁铁氧体的制备方法，该方法包括以下步骤：取永磁铁氧体预烧料粉置于球磨罐中，分别加入碳酸钙、碳酸氢钠、氧化钨、碳酸钡以及硅微粉，混合均匀后制成混合物料，混合物料中加水，经球磨制备得混合浆料，混合浆料经沉淀过滤制备得成型料浆，成型料浆经注模成型后制备得成型生坯，成型生坯经烧结后，制备得永磁铁氧体磁体毛坯。本发明提供一种高性能永磁铁氧体的制备方法，既提高永磁铁氧体剩磁又保持较高内禀矫顽力。
Preparation method of high-performance permanent magnetic ferrite
一种高性能永磁铁氧体的制备方法
YAO ZHISHENG (author) / YU DAODE (author) / WANG ZHENHUA (author) / XU KAI (author)
2024-03-22
Patent
Electronic Resource
Chinese
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