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Liquid doping preparation method of hexagonal system M-type strontium ferrite block
The invention discloses a liquid doping preparation method of a hexagonal system M-type strontium ferrite block, relates to the technical field of preparation of permanent magnetic ferrites, and aims to solve the problems of nonuniform dopant distribution, impure phase formation or complex sintering and high energy consumption caused by solid direct doping. The preparation method comprises the following steps: taking Fe (NO3). 9H2O, Sr (NO3) 2 and NaOH as raw materials, and preparing strontium ferrite powder by a hydrothermal method; the preparation method comprises the following steps: adding a C8H20O4Si-absolute ethyl alcohol dispersion liquid into nano strontium ferrite powder, uniformly grinding to finish doping, carrying out compression molding and sintering, and cooling to obtain a strontium ferrite block product; liquid C8H20O4Si is adopted for doping, the dosage is smaller than that of direct doping of solid silicon dioxide, cost reduction is facilitated, strontium ferrite powder is prepared through a hydrothermal method, crystal grains are fine and uniform, the activity is better, and the strontium ferrite powder can be sintered into a compact block at a lower temperature; the prepared product is free of impurity components, good in grain dispersity and excellent in magnetic performance.
本发明公开了一种六角晶系M型锶铁氧体块体的液态掺杂制备方法，涉及永磁铁氧体的制备技术领域，为解决固态直接掺杂会带来掺杂物分布不均匀、形成杂相或烧结复杂能耗高的问题；本发明包括以Fe(NO3)·9H2O、Sr(NO3)2和NaOH为原料，水热法制备锶铁氧体粉末；在纳米锶铁氧体粉末中加入C8H20O4Si‑无水乙醇分散液，研磨均匀完成掺杂后，压制成型并烧结，冷却得到锶铁氧体块体产品；本发明采用液态C8H20O4Si掺杂，用量相比直接掺杂固态二氧化硅更少，利于减少成本，锶铁氧体粉末采用水热法制备，晶粒细小均匀活性更好，可以在更低温度下烧结成致密块体；本发明制得的产品无杂质成分，晶粒分散性好，磁性能优秀。
Liquid doping preparation method of hexagonal system M-type strontium ferrite block
The invention discloses a liquid doping preparation method of a hexagonal system M-type strontium ferrite block, relates to the technical field of preparation of permanent magnetic ferrites, and aims to solve the problems of nonuniform dopant distribution, impure phase formation or complex sintering and high energy consumption caused by solid direct doping. The preparation method comprises the following steps: taking Fe (NO3). 9H2O, Sr (NO3) 2 and NaOH as raw materials, and preparing strontium ferrite powder by a hydrothermal method; the preparation method comprises the following steps: adding a C8H20O4Si-absolute ethyl alcohol dispersion liquid into nano strontium ferrite powder, uniformly grinding to finish doping, carrying out compression molding and sintering, and cooling to obtain a strontium ferrite block product; liquid C8H20O4Si is adopted for doping, the dosage is smaller than that of direct doping of solid silicon dioxide, cost reduction is facilitated, strontium ferrite powder is prepared through a hydrothermal method, crystal grains are fine and uniform, the activity is better, and the strontium ferrite powder can be sintered into a compact block at a lower temperature; the prepared product is free of impurity components, good in grain dispersity and excellent in magnetic performance.
本发明公开了一种六角晶系M型锶铁氧体块体的液态掺杂制备方法，涉及永磁铁氧体的制备技术领域，为解决固态直接掺杂会带来掺杂物分布不均匀、形成杂相或烧结复杂能耗高的问题；本发明包括以Fe(NO3)·9H2O、Sr(NO3)2和NaOH为原料，水热法制备锶铁氧体粉末；在纳米锶铁氧体粉末中加入C8H20O4Si‑无水乙醇分散液，研磨均匀完成掺杂后，压制成型并烧结，冷却得到锶铁氧体块体产品；本发明采用液态C8H20O4Si掺杂，用量相比直接掺杂固态二氧化硅更少，利于减少成本，锶铁氧体粉末采用水热法制备，晶粒细小均匀活性更好，可以在更低温度下烧结成致密块体；本发明制得的产品无杂质成分，晶粒分散性好，磁性能优秀。
Liquid doping preparation method of hexagonal system M-type strontium ferrite block
一种六角晶系M型锶铁氧体块体的液态掺杂制备方法
XIA AILIN (author) / LI SIYUAN (author) / CHEN XIANGLING (author) / LIU ZIXIAN (author) / ZHANG HUIYAN (author) / LI HAILING (author) / LIU ZHIYUAN (author) / GU WEIHUA (author) / LIU JUAN (author) / JIN CHUANGUI (author)
2024-07-05
Patent
Electronic Resource
Chinese
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