Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
METHOD FOR MANUFACTURING CALCIUM-LANTHANUM-COBALT BASED FERRITE SINTERED MAGNET, AND CALCIUM-LANTHANUM-COBALT BASED FERRITE SINTERED MAGNET
PROBLEM TO BE SOLVED: To enhance the magnetic property of a Ca-La-Co based ferrite sintered magnet.SOLUTION: A method for manufacturing a Ca-La-Co based ferrite sintered magnet comprises: a step for preparing powder of a raw material given by the general formula, CaLaAFeCo, showing atomic proportions of Ca, La, an element "A" representing Ba and/or Sr, metal elements Fe and Co, provided that the subscripts "1-x-y", "x", "y" and "z", and "n" representing a mole ratio satisfy the following conditions, 0.3≤1-x-y≤0.6, 0.3≤x≤0.7, 0≤y≤0.2, 0.2≤z≤0.5, and 4≤n≤7; a preliminary baking step for preliminarily baking the raw material powder to obtain preliminarily baked material; a pulverizing step for pulverizing the preliminarily baked material into powder; a compacting step for compacting the powder into a compact; a sintering step for sintering the compact to obtain a sintered compact; and a thermal treatment step for performing a thermal treatment on the sintered compact at 350-475°C after the sintering step.SELECTED DRAWING: Figure 1
【課題】Ｃａ−Ｌａ−Ｃｏ系フェライト焼結磁石の磁気特性を向上させることを可能にする。【解決手段】Ｃａ、Ｌａ、Ｂａ及び／又はＳｒであるＡ元素、Ｆｅ及びＣｏの金属元素の原子比率を示す一般式：Ｃａ１−ｘ−ｙＬａｘＡｙＦｅ２ｎ−ｚＣｏｚにおいて、前記１−ｘ−ｙ、ｘ、ｙ及びｚ、並びにモル比を表わすｎが、０．３≦１−ｘ−ｙ≦０．６、０．３≦ｘ≦０．７、０≦ｙ≦０．２、０．２≦ｚ≦０．５、及び４≦ｎ≦７を満足するように原料粉末を準備する工程、前記原料粉末を仮焼し、仮焼体を得る仮焼工程、前記仮焼体を粉砕し、粉末を得る粉砕工程、前記粉末を成形し、成形体を得る成形工程、及び前記成形体を焼成し、焼結体を得る焼成工程を含み、前記焼結工程の後、前記焼結体を３５０℃以上４７５℃以下で熱処理する熱処理工程を含む、Ｃａ−Ｌａ−Ｃｏ系フェライト焼結磁石の製造方法。【選択図】図１
METHOD FOR MANUFACTURING CALCIUM-LANTHANUM-COBALT BASED FERRITE SINTERED MAGNET, AND CALCIUM-LANTHANUM-COBALT BASED FERRITE SINTERED MAGNET
PROBLEM TO BE SOLVED: To enhance the magnetic property of a Ca-La-Co based ferrite sintered magnet.SOLUTION: A method for manufacturing a Ca-La-Co based ferrite sintered magnet comprises: a step for preparing powder of a raw material given by the general formula, CaLaAFeCo, showing atomic proportions of Ca, La, an element "A" representing Ba and/or Sr, metal elements Fe and Co, provided that the subscripts "1-x-y", "x", "y" and "z", and "n" representing a mole ratio satisfy the following conditions, 0.3≤1-x-y≤0.6, 0.3≤x≤0.7, 0≤y≤0.2, 0.2≤z≤0.5, and 4≤n≤7; a preliminary baking step for preliminarily baking the raw material powder to obtain preliminarily baked material; a pulverizing step for pulverizing the preliminarily baked material into powder; a compacting step for compacting the powder into a compact; a sintering step for sintering the compact to obtain a sintered compact; and a thermal treatment step for performing a thermal treatment on the sintered compact at 350-475°C after the sintering step.SELECTED DRAWING: Figure 1
【課題】Ｃａ−Ｌａ−Ｃｏ系フェライト焼結磁石の磁気特性を向上させることを可能にする。【解決手段】Ｃａ、Ｌａ、Ｂａ及び／又はＳｒであるＡ元素、Ｆｅ及びＣｏの金属元素の原子比率を示す一般式：Ｃａ１−ｘ−ｙＬａｘＡｙＦｅ２ｎ−ｚＣｏｚにおいて、前記１−ｘ−ｙ、ｘ、ｙ及びｚ、並びにモル比を表わすｎが、０．３≦１−ｘ−ｙ≦０．６、０．３≦ｘ≦０．７、０≦ｙ≦０．２、０．２≦ｚ≦０．５、及び４≦ｎ≦７を満足するように原料粉末を準備する工程、前記原料粉末を仮焼し、仮焼体を得る仮焼工程、前記仮焼体を粉砕し、粉末を得る粉砕工程、前記粉末を成形し、成形体を得る成形工程、及び前記成形体を焼成し、焼結体を得る焼成工程を含み、前記焼結工程の後、前記焼結体を３５０℃以上４７５℃以下で熱処理する熱処理工程を含む、Ｃａ−Ｌａ−Ｃｏ系フェライト焼結磁石の製造方法。【選択図】図１
METHOD FOR MANUFACTURING CALCIUM-LANTHANUM-COBALT BASED FERRITE SINTERED MAGNET, AND CALCIUM-LANTHANUM-COBALT BASED FERRITE SINTERED MAGNET
Ｃａ−Ｌａ−Ｃｏ系フェライト焼結磁石の製造方法及びＣａ−Ｌａ−Ｃｏ系フェライト焼結磁石
ODA ETSUSHI (Autor:in) / TAKAMI TAKASHI (Autor:in)
06.04.2017
Patent
Elektronische Ressource
Japanisch
Preparation method of high-performance calcium lanthanum cobalt ferrite sintered magnet
| Europäisches Patentamt | 2024
FERRITE SINTERED MAGNET, AND MANUFACTURING METHOD OF FERRITE SINTERED MAGNET
| Europäisches Patentamt | 2019
| Europäisches Patentamt | 2024
MANUFACTURING METHOD OF FERRITE SINTERED MAGNET AND FERRITE SINTERED MAGNET
| Europäisches Patentamt | 2018
FERRITE SINTERED MAGNET AND METHOD FOR MANUFACTURING FERRITE SINTERED MAGNET
| Europäisches Patentamt | 2022