Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Permanent magnetic ferrite material with high magnetic conductivity and preparation method thereof
The invention discloses a permanent magnetic ferrite material with high magnetic conductivity and a preparation method thereof. The preparation method comprises the following steps: mixing barium nitrate, ferric nitrate and strontium carbonate; adding an equimolar sodium hydroxide solution; performing a hydrothermal reaction for 2-3 hours at a temperature of 150-200 DEG C, adding a mixture of silicon dioxide, calcium carbonate and stearic acid, wherein the mixture has been subjected to an ultrasonic treatment, performing a hydrothermal reaction for 1-2 hours at a temperature of 210-230 DEG C,sintering the obtained hydrothermal reaction product, heating to 450-600 DEG C, keeping the temperature for 1-2 hours, and cooling to obtain the permanent magnetic ferrite material with high magneticconductivity. The prepared permanent magnetic ferrite material is small in particle size and narrow in particle size distribution range, through an ultrasonic treatment, a secondary hydrothermal processing technology and a sintering technology, the uniformity of components among all crystalline phases is high, the permanent magnetic ferrite material has a very high room-temperature magnetic performance and high magnetization intensity, and the magnetic conductivity of the ferrite material is jointly improved through the synergistic effect of additives.
本发明公开了一种高磁导率永磁铁氧体材料及其制备方法，将硝酸钡、硝酸铁和碳酸锶混合，加入等摩尔的氢氧化钠溶液，150~200℃下水热反应2~3小时，加入超声处理的二氧化硅、碳酸钙和硬脂酸混合物，在210~230℃下水热反应1~2小时，得到的水热反应产物进行烧结，加热至450~600℃保温1~2小时，冷却后得高磁导率永磁铁氧体材料。本发明制备的高磁导率永磁铁氧体粒度小，粒度分布范围窄，通过超声、二次水热加工工艺及烧结工艺，各晶相之间成分均匀性较高，具有很高的室温磁性能，磁化强度高，与其它添加剂复合协同作用共同提高了铁氧体材料的磁导率。
Permanent magnetic ferrite material with high magnetic conductivity and preparation method thereof
The invention discloses a permanent magnetic ferrite material with high magnetic conductivity and a preparation method thereof. The preparation method comprises the following steps: mixing barium nitrate, ferric nitrate and strontium carbonate; adding an equimolar sodium hydroxide solution; performing a hydrothermal reaction for 2-3 hours at a temperature of 150-200 DEG C, adding a mixture of silicon dioxide, calcium carbonate and stearic acid, wherein the mixture has been subjected to an ultrasonic treatment, performing a hydrothermal reaction for 1-2 hours at a temperature of 210-230 DEG C,sintering the obtained hydrothermal reaction product, heating to 450-600 DEG C, keeping the temperature for 1-2 hours, and cooling to obtain the permanent magnetic ferrite material with high magneticconductivity. The prepared permanent magnetic ferrite material is small in particle size and narrow in particle size distribution range, through an ultrasonic treatment, a secondary hydrothermal processing technology and a sintering technology, the uniformity of components among all crystalline phases is high, the permanent magnetic ferrite material has a very high room-temperature magnetic performance and high magnetization intensity, and the magnetic conductivity of the ferrite material is jointly improved through the synergistic effect of additives.
本发明公开了一种高磁导率永磁铁氧体材料及其制备方法，将硝酸钡、硝酸铁和碳酸锶混合，加入等摩尔的氢氧化钠溶液，150~200℃下水热反应2~3小时，加入超声处理的二氧化硅、碳酸钙和硬脂酸混合物，在210~230℃下水热反应1~2小时，得到的水热反应产物进行烧结，加热至450~600℃保温1~2小时，冷却后得高磁导率永磁铁氧体材料。本发明制备的高磁导率永磁铁氧体粒度小，粒度分布范围窄，通过超声、二次水热加工工艺及烧结工艺，各晶相之间成分均匀性较高，具有很高的室温磁性能，磁化强度高，与其它添加剂复合协同作用共同提高了铁氧体材料的磁导率。
Permanent magnetic ferrite material with high magnetic conductivity and preparation method thereof
一种高磁导率永磁铁氧体材料及其制备方法
YANG YONGHUA (Autor:in)
29.05.2020
Patent
Elektronische Ressource
Chinesisch
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