Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Nickel-zinc ferrite wave absorbing plate for microwave anechoic chamber and preparation method thereof
The invention discloses a nickel-zinc ferrite wave absorbing plate for a microwave anechoic chamber and a preparation method thereof. The ferrite wave absorbing plate is prepared from raw materials including Fe2O3, NiO, ZnO and CuO and additives including TiO2 and ZrO2. The mass percent of the raw materials is 55-70 wt% of Fe2O3; 10-20 wt% of NiO, 15 -25 wt% of ZnO and 2-4 wt% of CuO; the mass of the additives TiO2 and ZrO2 accounts for 0.2-0.5 wt% of the total mass of the raw materials. The preparation method comprises the following steps: (1) burdening and ball milling; (2) drying and pre-sintering; (3) vibration milling and secondary ball milling; (4) drying and granulating; and (5) profiling and sintering. The thickness of the nickel-zinc ferrite wave absorbing plate for the microwave anechoic chamber is 6.7 mm, the wave absorbing performance can reach -15dB in a P wave band, the wave-absorbing performance can reach -20dB in a 50-500MHz wave band, the peak value is achieved at 227 MHz, the maximum peak value is -31.72 dB, and the the index performance of the ferrite wave absorbing material for the anechoic chamber is achieved; the preparation method is simple.
一种微波暗室用镍锌铁氧体吸波片及其制备方法，该铁氧体吸波片由原料Fe2O3、NiO、ZnO和CuO，添加剂TiO2和ZrO2制成；所述原料的质量百分比为：Fe2O355~70 wt%。NiO10~20 wt%，ZnO15~25 wt%，CuO2~4 wt%；所述添加剂TiO2和ZrO2的质量为原料总质量的0.2~0.5 wt%。其制备方法，包括以下步骤：（1）配料、球磨；（2）干燥、预烧；（3）振磨、二次球磨；（4）干燥、造粒；（5）压型，烧结。本发明微波暗室用镍锌铁氧体吸波片的厚度为6.7mm，在P波段的吸波性能达到‑15dB，在50~500MHz波段内，吸波性能达到‑20dB，在227MHz处达到峰值，最大的峰值为‑31.72dB，达到暗室用铁氧体吸波材料的指标性能；其制备方法简单。
Nickel-zinc ferrite wave absorbing plate for microwave anechoic chamber and preparation method thereof
The invention discloses a nickel-zinc ferrite wave absorbing plate for a microwave anechoic chamber and a preparation method thereof. The ferrite wave absorbing plate is prepared from raw materials including Fe2O3, NiO, ZnO and CuO and additives including TiO2 and ZrO2. The mass percent of the raw materials is 55-70 wt% of Fe2O3; 10-20 wt% of NiO, 15 -25 wt% of ZnO and 2-4 wt% of CuO; the mass of the additives TiO2 and ZrO2 accounts for 0.2-0.5 wt% of the total mass of the raw materials. The preparation method comprises the following steps: (1) burdening and ball milling; (2) drying and pre-sintering; (3) vibration milling and secondary ball milling; (4) drying and granulating; and (5) profiling and sintering. The thickness of the nickel-zinc ferrite wave absorbing plate for the microwave anechoic chamber is 6.7 mm, the wave absorbing performance can reach -15dB in a P wave band, the wave-absorbing performance can reach -20dB in a 50-500MHz wave band, the peak value is achieved at 227 MHz, the maximum peak value is -31.72 dB, and the the index performance of the ferrite wave absorbing material for the anechoic chamber is achieved; the preparation method is simple.
一种微波暗室用镍锌铁氧体吸波片及其制备方法，该铁氧体吸波片由原料Fe2O3、NiO、ZnO和CuO，添加剂TiO2和ZrO2制成；所述原料的质量百分比为：Fe2O355~70 wt%。NiO10~20 wt%，ZnO15~25 wt%，CuO2~4 wt%；所述添加剂TiO2和ZrO2的质量为原料总质量的0.2~0.5 wt%。其制备方法，包括以下步骤：（1）配料、球磨；（2）干燥、预烧；（3）振磨、二次球磨；（4）干燥、造粒；（5）压型，烧结。本发明微波暗室用镍锌铁氧体吸波片的厚度为6.7mm，在P波段的吸波性能达到‑15dB，在50~500MHz波段内，吸波性能达到‑20dB，在227MHz处达到峰值，最大的峰值为‑31.72dB，达到暗室用铁氧体吸波材料的指标性能；其制备方法简单。
Nickel-zinc ferrite wave absorbing plate for microwave anechoic chamber and preparation method thereof
一种微波暗室用镍锌铁氧体吸波片及其制备方法
GAO YIN (Autor:in) / TAN CHUNLIN (Autor:in) / CHEN KEN (Autor:in) / LI YUDONG (Autor:in) / YAO RUI (Autor:in)
08.02.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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