复合吸波材料及其制备方法
By introducing non-lanthanum rare earth elements such as Ce into LaFeO3 nanoparticles, a porous framework structure FeLaxM1-xOy composite microwave absorbing material is formed, which solves the problem of insufficient microwave absorption performance of LaFeO3 in the X-band and realizes efficient broadband electromagnetic wave absorption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BAOTOU RESEARCH INSTITUTE OF RARE EARTHS
- Filing Date
- 2023-11-28
- Publication Date
- 2026-07-17
AI Technical Summary
Existing LaFeO3-based absorbing materials have poor absorption performance in the X-band and insufficient effective absorption width, making it difficult to meet the absorption requirements of high-frequency electromagnetic waves.
By dissolving non-lanthanum rare earth elements such as Ce into LaFeO3 nanoparticles, utilizing lattice distortion to induce defect polarization, and combining annealing with nitrogen-rich compounds to provide a reducing atmosphere, a nano- to submicron porous framework structure is formed, thus preparing FeLaxM1-xOy composite microwave absorbing materials.
It achieves high microwave reflection loss and wide bandwidth absorption in the X-band (8-12GHz), with a reflection loss value of -34dB and an effective absorption bandwidth of 3.12GHz. The process is simple and low cost.
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