Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-performance strontium permanent magnetic ferrite preparation method
The invention discloses a high-performance strontium permanent magnetic ferrite preparation method. The method comprises 1, adding nanometer bismuth oxide, nanometer cobaltous oxide, nanometer zinc oxide and nanometer germanium oxide into nanometer strontium carbonate, nanometer ferric oxide, nanometer calcium carbonate and nanometer silica as raw materials, and carrying out sanding, 2, carrying out pre-sintering, 3, adding nanometer lanthana oxide, nanometer cerium oxide, nanometer gadolinium oxide, nanometer bismuth oxide, nanometer cobalt oxide, nanometer germanium oxide, nanometer zinc oxide, a grain boundary modifier, a dispersant, a coupling agent, nanometer cesium carbonate, nanometer aluminum oxide, nanometer calcium carbonate and nanometer silica into the pre-sintered product, carrying out mixing to obtain a uniform mixture, replacing strontium by lanthanum, cerium, gadolinium and bismuth, replacing iron ions by cobalt, zinc or germanium and carrying out sanding, 4, carrying cooling molding, and 5, carrying out sintering in a combustion furnace. The method greatly improves permanent magnetic ferrite saturation magnetization, magnet coercive force, remanent magnetism and stability.
High-performance strontium permanent magnetic ferrite preparation method
The invention discloses a high-performance strontium permanent magnetic ferrite preparation method. The method comprises 1, adding nanometer bismuth oxide, nanometer cobaltous oxide, nanometer zinc oxide and nanometer germanium oxide into nanometer strontium carbonate, nanometer ferric oxide, nanometer calcium carbonate and nanometer silica as raw materials, and carrying out sanding, 2, carrying out pre-sintering, 3, adding nanometer lanthana oxide, nanometer cerium oxide, nanometer gadolinium oxide, nanometer bismuth oxide, nanometer cobalt oxide, nanometer germanium oxide, nanometer zinc oxide, a grain boundary modifier, a dispersant, a coupling agent, nanometer cesium carbonate, nanometer aluminum oxide, nanometer calcium carbonate and nanometer silica into the pre-sintered product, carrying out mixing to obtain a uniform mixture, replacing strontium by lanthanum, cerium, gadolinium and bismuth, replacing iron ions by cobalt, zinc or germanium and carrying out sanding, 4, carrying cooling molding, and 5, carrying out sintering in a combustion furnace. The method greatly improves permanent magnetic ferrite saturation magnetization, magnet coercive force, remanent magnetism and stability.
High-performance strontium permanent magnetic ferrite preparation method
WANG CHENGHONG (Autor:in) / DENG DAOLU (Autor:in)
13.01.2016
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
strontium permanent magnetic ferrite preparation method
| Europäisches Patentamt | 2021
High performance strontium-calcium permanent magnetic ferrite magnet and preparation method thereof
| Europäisches Patentamt | 2015
Preparation method of high-performance La-Co strontium permanent magnetic ferrite material
| Europäisches Patentamt | 2021
Calcium-barium-strontium permanent magnetic ferrite and preparation method thereof
| Europäisches Patentamt | 2024
Preparation method of high-performance permanent magnetic ferrite
| Europäisches Patentamt | 2024