采用化学镀方法在空心玻璃微球表面复合磁性金属钴,制备了镀钴空心玻璃微球,并对其进行了真空退火热处理.经过化学镀的空心玻璃微球表面包覆了一层均匀、致密的金属镀层;镀钴空心玻璃微球(2.5g/cm3)镀层晶体结构对其电磁性能产生影响.当镀层Co含量为95%时,介电常数实部在11GHz处达到35,虚部在13GHz处达到22;在经过热处理后,镀层发生晶相转变,介电常数实部和虚部均得到提高.另外,热处理能降低钴镀层的矫顽力,改善其软磁性能.
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