Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for producing nickel-zinc-cobalt spinel ferrite in ceramic form
The invention relates to a method for obtaining a nickel-zinc-cobalt spinel ferrite in ceramic form, comprising the following steps: obtaining a precipitate (1) of iron, nickel, zinc and cobalt hydroxides by co-precipitation, rinsing the precipitate (2), drying and grinding (3) the rinsed precipitate in order to obtain a powder, forming (4) a compact by pressing the powder, and sintering (5) the compact. The sintering step (5) comprises gradually increasing the temperature from the ambient temperature to a maximum temperature between 950 DEG C and 1010 DEG C at a rate of 2 DEG C to 4 DEG C/min, maintaining the maximum temperature for 45 minutes to 3 hours, and gradually decreasing the temperature to the ambient temperature at a rate of 2 DEG C to 4 DEG C/min. These steps, and in particular the sintering step, make it possible to obtain a material that is particularly well adapted for the manufacture of antennas configured for frequencies less than one gigahertz.
本发明涉及一种获得呈陶瓷形式的镍锌钴尖晶石铁氧体的方法，其包括以下步骤：通过共沉淀获得铁、镍、锌和钴氢氧化物的沉淀物(1)，冲洗该沉淀物(2)，干燥并研磨(3)经冲洗的沉淀物以便获得粉末，通过压制该粉末形成(4)压坯，以及烧结(5)该压坯。烧结步骤(5)包括从环境温度以2℃至4℃/分钟逐渐升温达到包括在950℃与1010℃之间的最高温度，在该最高温度下维持四十五分钟至三小时，以2℃至4℃/分钟逐渐降温达到环境温度。这些步骤、并且特别是烧结步骤，使能够获得特别良好地适配用于制造配置用于小于一千兆赫的频率的天线的材料。
Method for producing nickel-zinc-cobalt spinel ferrite in ceramic form
The invention relates to a method for obtaining a nickel-zinc-cobalt spinel ferrite in ceramic form, comprising the following steps: obtaining a precipitate (1) of iron, nickel, zinc and cobalt hydroxides by co-precipitation, rinsing the precipitate (2), drying and grinding (3) the rinsed precipitate in order to obtain a powder, forming (4) a compact by pressing the powder, and sintering (5) the compact. The sintering step (5) comprises gradually increasing the temperature from the ambient temperature to a maximum temperature between 950 DEG C and 1010 DEG C at a rate of 2 DEG C to 4 DEG C/min, maintaining the maximum temperature for 45 minutes to 3 hours, and gradually decreasing the temperature to the ambient temperature at a rate of 2 DEG C to 4 DEG C/min. These steps, and in particular the sintering step, make it possible to obtain a material that is particularly well adapted for the manufacture of antennas configured for frequencies less than one gigahertz.
本发明涉及一种获得呈陶瓷形式的镍锌钴尖晶石铁氧体的方法，其包括以下步骤：通过共沉淀获得铁、镍、锌和钴氢氧化物的沉淀物(1)，冲洗该沉淀物(2)，干燥并研磨(3)经冲洗的沉淀物以便获得粉末，通过压制该粉末形成(4)压坯，以及烧结(5)该压坯。烧结步骤(5)包括从环境温度以2℃至4℃/分钟逐渐升温达到包括在950℃与1010℃之间的最高温度，在该最高温度下维持四十五分钟至三小时，以2℃至4℃/分钟逐渐降温达到环境温度。这些步骤、并且特别是烧结步骤，使能够获得特别良好地适配用于制造配置用于小于一千兆赫的频率的天线的材料。
Method for producing nickel-zinc-cobalt spinel ferrite in ceramic form
用于生产呈陶瓷形式的镍锌钴尖晶石铁氧体的方法
MATHAY JEAN-LUC (Autor:in) / SORRIOU DIDIER (Autor:in)
16.05.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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