Aluminate/cobalt composites developing for elevated-temperature and high-efficiency electromagnetic absorbing (EMA) materials.

ABSTRACT: It is increasingly urgent to develop EMA materials that combine elevated-temperature and high-efficiency absorbing performances. Herein, aluminate/Co composites were prepared through mechanical mixing and hydration hardening. The microstructures of the specimens were controlled by adjusting the shape of Co particles, and cordierite particles were added to further regulate the distribution of Co particles. Flake-shaped Co particles exhibit superior electromagnetic parameters, while the excessively high conductivity of Co flakes filled specimens leads to a significant degradation in their impedance matching, resulting in a rapid attenuation of the electromagnetic performances. The temperature-dependent ionic conductivity plays an important role in controlling the elevated-temperature conduct

SUBMITTER: Guan ZJ 

PROVIDER: S-EPMC12549385 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature