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Preparation method of high-performance nano rare earth doped strontium ferrite permanent magnet material
The invention discloses a preparation method of a high-performance nano rare earth doped strontium ferrite permanent magnet material, wherein the chemical composition formula of the rare earth doped strontium ferrite is Sr1-xLnxFe12-xAxO19, the element Ln in the compound is rare earth elements such as La, Yb and the like, the element A is a divalent transition metal element such as Co and the like, and x is greater than or equal to 0 and less than or equal to 0.2. According to the invention, a Sr1-xLnxFe12-xAxO19 precursor is prepared through a coprecipitation method of a Taylor reactor, thenmagnetic field orientation and sintering under a magnetic field are carried out to obtain the rare earth doped strontium ferrite, the preparation method can obtain the precursor with good crystallinity and the size of 100-200 nm, the strontium ferrite obtained after co-doping and sintering of rare earth elements and metal elements is higher in magnetic performance, and the preparation method can effectively reduce high-temperature sintering temperature and time and save energy consumption.
本发明公开了一种高性能纳米稀土掺杂锶铁氧体永磁材料的制备方法。本发明的稀土掺杂锶铁氧体的化学组成式为Sr1‑xLnxFe12‑xAxO19,所述化合物中元素Ln为La、Yb等稀土元素，元素A为Co等二价过渡族金属元素，0≤x≤0.2。本发明通过泰勒反应器的共沉淀法制备Sr1‑xLnxFe12‑xAxO19前驱体，之后进行磁场取向，磁场下烧结得到稀土掺杂锶铁氧体，该制备方法能够得到结晶度好，大小为100‑200nm的前驱体,通过稀土元素和金属元素共掺杂，烧结后得到的锶铁氧体磁性能更高，该制备方法能够有效降低高温烧结温度与时间，节约能耗。
Preparation method of high-performance nano rare earth doped strontium ferrite permanent magnet material
The invention discloses a preparation method of a high-performance nano rare earth doped strontium ferrite permanent magnet material, wherein the chemical composition formula of the rare earth doped strontium ferrite is Sr1-xLnxFe12-xAxO19, the element Ln in the compound is rare earth elements such as La, Yb and the like, the element A is a divalent transition metal element such as Co and the like, and x is greater than or equal to 0 and less than or equal to 0.2. According to the invention, a Sr1-xLnxFe12-xAxO19 precursor is prepared through a coprecipitation method of a Taylor reactor, thenmagnetic field orientation and sintering under a magnetic field are carried out to obtain the rare earth doped strontium ferrite, the preparation method can obtain the precursor with good crystallinity and the size of 100-200 nm, the strontium ferrite obtained after co-doping and sintering of rare earth elements and metal elements is higher in magnetic performance, and the preparation method can effectively reduce high-temperature sintering temperature and time and save energy consumption.
本发明公开了一种高性能纳米稀土掺杂锶铁氧体永磁材料的制备方法。本发明的稀土掺杂锶铁氧体的化学组成式为Sr1‑xLnxFe12‑xAxO19,所述化合物中元素Ln为La、Yb等稀土元素，元素A为Co等二价过渡族金属元素，0≤x≤0.2。本发明通过泰勒反应器的共沉淀法制备Sr1‑xLnxFe12‑xAxO19前驱体，之后进行磁场取向，磁场下烧结得到稀土掺杂锶铁氧体，该制备方法能够得到结晶度好，大小为100‑200nm的前驱体,通过稀土元素和金属元素共掺杂，烧结后得到的锶铁氧体磁性能更高，该制备方法能够有效降低高温烧结温度与时间，节约能耗。
Preparation method of high-performance nano rare earth doped strontium ferrite permanent magnet material
一种高性能纳米稀土掺杂锶铁氧体永磁材料的制备方法
YANG HANGFU (Autor:in) / HUANG XIANI (Autor:in) / FANG QINGWEI (Autor:in) / WU QIONG (Autor:in) / PAN MINXIANG (Autor:in) / GE HONGLIANG (Autor:in) / YU YUNDAN (Autor:in)
02.03.2021
Patent
Elektronische Ressource
Chinesisch
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