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Preparation method of rare earth-doped nanometer strontium ferrite permanent magnet material
The invention discloses a preparation method of a rare earth-doped nanometer strontium ferrite permanent magnet material. The chemical composition formula of rare earth-doped strontium ferrite is Sr<1-x>LnFe<12-x>AO<19>, wherein the element Ln in the formula is a rare earth element such as La and Yb, the element A is a divalent transition metal element such as Co, and x is greater than or equal to 0 and less than or equal to 0.2. According to the preparation method, a Sr<1-x>LnFe<12-x>AO<19> precursor is continuously prepared through a Taylor reactor, and then grinding and high-temperature sintering are carried out to obtain the rare earth-doped strontium ferrite; the precursor with good crystallinity and a size of 100-200 nm can be obtained through the preparation method; thestrontium ferrite obtained after co-doping and sintering of the rare earth element and the metal element is higher in magnetic performance and better in performance; and the preparation method can effectively reduce high-temperature sintering temperature and time, saves energy consumption, and is suitable for industrial production.
本发明公开了一种稀土掺杂纳米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连续制备Sr1‑xLnxFe12‑xAxO19前驱体，之后进行研磨，高温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，适合工业化生产。
Preparation method of rare earth-doped nanometer strontium ferrite permanent magnet material
The invention discloses a preparation method of a rare earth-doped nanometer strontium ferrite permanent magnet material. The chemical composition formula of rare earth-doped strontium ferrite is Sr<1-x>LnFe<12-x>AO<19>, wherein the element Ln in the formula is a rare earth element such as La and Yb, the element A is a divalent transition metal element such as Co, and x is greater than or equal to 0 and less than or equal to 0.2. According to the preparation method, a Sr<1-x>LnFe<12-x>AO<19> precursor is continuously prepared through a Taylor reactor, and then grinding and high-temperature sintering are carried out to obtain the rare earth-doped strontium ferrite; the precursor with good crystallinity and a size of 100-200 nm can be obtained through the preparation method; thestrontium ferrite obtained after co-doping and sintering of the rare earth element and the metal element is higher in magnetic performance and better in performance; and the preparation method can effectively reduce high-temperature sintering temperature and time, saves energy consumption, and is suitable for industrial production.
本发明公开了一种稀土掺杂纳米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连续制备Sr1‑xLnxFe12‑xAxO19前驱体，之后进行研磨，高温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，适合工业化生产。
Preparation method of rare earth-doped nanometer strontium ferrite permanent magnet material
一种稀土掺杂纳米锶铁氧体永磁材料的制备方法
YANG HANGFU (Autor:in) / FANG QINGWEI (Autor:in) / HUANG XIANI (Autor:in) / WU QIONG (Autor:in) / PAN MINXIANG (Autor:in) / GE HONGLIANG (Autor:in)
05.03.2021
Patent
Elektronische Ressource
Chinesisch
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