Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-orientation hexagonal ferrite thick film and hot-pressing preparation method thereof
The invention belongs to the field of ferrite thick film preparation, and particularly relates to a high-orientation hexagonal ferrite thick film and a hot-pressing preparation method thereof. The invention provides a two-step hot pressing sintering method to improve the orientation degree of the thick film aiming at the problem that high orientation degree and high density of the hexagonal ferrite thick film are difficult to realize at the same time. A low-temperature hot-pressing magnetic field orientation process and a high-temperature hot-pressing sintering process are organically combined to form a high-orientation and compact BaFe12O19 thick film prepared by two-step hot-pressing sintering. Mechanical pressure parallel to the direction of a magnetic field is introduced into the self-built low-temperature hot-pressing magnetic field orientation equipment, so that pores in a thick film before high-temperature sintering are effectively reduced. Therefore, the density of the thick film is improved. An electromagnet and a heating plate in the low-temperature hot-pressing magnetic field orientation equipment adopt a discrete combination mode. The mode effectively improves the stability of the magnetic field. Therefore, the orientation degree of the thick film can be improved.
本发明属于铁氧体厚膜制备领域，具体涉及一种高取向度六角铁氧体厚膜及其热压制备方法。本发明针对六角铁氧体厚膜高取向度和高致密度难以同时实现的难题，提出两步热压烧结法来提高厚膜取向度。将低温热压磁场取向工艺和高温热压烧结工艺有机结合，形成两步热压烧结制备高取向且致密BaFe12O19厚膜。自主搭建的低温热压磁场取向设备中引入了与磁场方向平行的机械压力，有效地降低高温烧结前厚膜中的孔隙。这有利于厚膜密度的提高。低温热压磁场取向设备中的电磁铁和加热板，采用了分立组合的方式。该种方式有效地提高了磁场的稳定性。这有利于提高厚膜的取向度。
High-orientation hexagonal ferrite thick film and hot-pressing preparation method thereof
The invention belongs to the field of ferrite thick film preparation, and particularly relates to a high-orientation hexagonal ferrite thick film and a hot-pressing preparation method thereof. The invention provides a two-step hot pressing sintering method to improve the orientation degree of the thick film aiming at the problem that high orientation degree and high density of the hexagonal ferrite thick film are difficult to realize at the same time. A low-temperature hot-pressing magnetic field orientation process and a high-temperature hot-pressing sintering process are organically combined to form a high-orientation and compact BaFe12O19 thick film prepared by two-step hot-pressing sintering. Mechanical pressure parallel to the direction of a magnetic field is introduced into the self-built low-temperature hot-pressing magnetic field orientation equipment, so that pores in a thick film before high-temperature sintering are effectively reduced. Therefore, the density of the thick film is improved. An electromagnet and a heating plate in the low-temperature hot-pressing magnetic field orientation equipment adopt a discrete combination mode. The mode effectively improves the stability of the magnetic field. Therefore, the orientation degree of the thick film can be improved.
本发明属于铁氧体厚膜制备领域，具体涉及一种高取向度六角铁氧体厚膜及其热压制备方法。本发明针对六角铁氧体厚膜高取向度和高致密度难以同时实现的难题，提出两步热压烧结法来提高厚膜取向度。将低温热压磁场取向工艺和高温热压烧结工艺有机结合，形成两步热压烧结制备高取向且致密BaFe12O19厚膜。自主搭建的低温热压磁场取向设备中引入了与磁场方向平行的机械压力，有效地降低高温烧结前厚膜中的孔隙。这有利于厚膜密度的提高。低温热压磁场取向设备中的电磁铁和加热板，采用了分立组合的方式。该种方式有效地提高了磁场的稳定性。这有利于提高厚膜的取向度。
High-orientation hexagonal ferrite thick film and hot-pressing preparation method thereof
一种高取向度六角铁氧体厚膜及其热压制备方法
TANG RUJUN (Autor:in) / DONG ANJIANG (Autor:in)
10.05.2024
Patent
Elektronische Ressource
Chinesisch
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