Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of yttrium iron garnet ferrite material with high dielectric constant and small line width
The invention discloses a preparation method of a high-dielectric-constant small-line-width yttrium iron garnet ferrite material, and belongs to the technical field of ferrite material preparation. The yttrium iron garnet ferrite material is prepared by substituting dodecahedron Y < 3 + > and octahedron Fe < 3 + > in a garnet structure, adopting a two-time pre-sintering process and a three-time ball milling process with a low rotating speed and a high rotating speed in sequence, and only needing three-time ball milling, one-time granulation and one-time sintering. According to the preparation method, a secondary pre-sintering preparation process is adopted, so that the activity of powder is better, the solid-phase reaction completion degree in the sintering stage is higher, and the material performance is more excellent; the process of first low rotating speed and then high rotating speed is adopted for third-time ball milling, and the particle size uniformity of the powder obtained through third-time ball milling is enhanced; the prepared ferrite has high dielectric constant epsilon'greater than 20, low ferromagnetic resonance line width delta H less than or equal to 25Oe and low dielectric loss tan delta epsilon less than 1 * 10 <-4 >.
一种高介电常数小线宽钇铁石榴石铁氧体材料制备方法，属于铁氧体材料制备技术领域。本发明通过对石榴石结构中十二面体Y3+、八面体Fe3+的取代，采用二次预烧工艺和先低转速后高转速的三次球磨工艺，仅需三次球磨、一次造粒、一次烧结制得了钇铁石榴石铁氧体材料。本发明采用二次预烧的制备工艺，粉料的活性更好，烧结阶段固相反应完成程度更高，材料性能更优异；三次球磨采用先低转速后高转速的工艺，增强三次球磨粉料的粒度均匀性；制得的铁氧体具有较高的介电常数ε'＞20、较低的铁磁共振线宽ΔH≤25Oe和较低的介电损耗tanδε＜1×10‑4。
Preparation method of yttrium iron garnet ferrite material with high dielectric constant and small line width
The invention discloses a preparation method of a high-dielectric-constant small-line-width yttrium iron garnet ferrite material, and belongs to the technical field of ferrite material preparation. The yttrium iron garnet ferrite material is prepared by substituting dodecahedron Y < 3 + > and octahedron Fe < 3 + > in a garnet structure, adopting a two-time pre-sintering process and a three-time ball milling process with a low rotating speed and a high rotating speed in sequence, and only needing three-time ball milling, one-time granulation and one-time sintering. According to the preparation method, a secondary pre-sintering preparation process is adopted, so that the activity of powder is better, the solid-phase reaction completion degree in the sintering stage is higher, and the material performance is more excellent; the process of first low rotating speed and then high rotating speed is adopted for third-time ball milling, and the particle size uniformity of the powder obtained through third-time ball milling is enhanced; the prepared ferrite has high dielectric constant epsilon'greater than 20, low ferromagnetic resonance line width delta H less than or equal to 25Oe and low dielectric loss tan delta epsilon less than 1 * 10 <-4 >.
一种高介电常数小线宽钇铁石榴石铁氧体材料制备方法，属于铁氧体材料制备技术领域。本发明通过对石榴石结构中十二面体Y3+、八面体Fe3+的取代，采用二次预烧工艺和先低转速后高转速的三次球磨工艺，仅需三次球磨、一次造粒、一次烧结制得了钇铁石榴石铁氧体材料。本发明采用二次预烧的制备工艺，粉料的活性更好，烧结阶段固相反应完成程度更高，材料性能更优异；三次球磨采用先低转速后高转速的工艺，增强三次球磨粉料的粒度均匀性；制得的铁氧体具有较高的介电常数ε'＞20、较低的铁磁共振线宽ΔH≤25Oe和较低的介电损耗tanδε＜1×10‑4。
Preparation method of yttrium iron garnet ferrite material with high dielectric constant and small line width
一种高介电常数小线宽钇铁石榴石铁氧体材料制备方法
SUN KE (Autor:in) / GUO ZHIQIANG (Autor:in) / LIAO YANG (Autor:in) / WU CHUANJIAN (Autor:in) / ZHANG XIAOFENG (Autor:in) / JIANG XIAONA (Autor:in) / LI QIFAN (Autor:in) / YU ZHONG (Autor:in) / LAN ZHONGWEN (Autor:in)
07.06.2024
Patent
Elektronische Ressource
Chinesisch
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