纳米远红外陶瓷粉体的制备工艺与性能研究

本研究分别采用固相合成法和液相共沉淀法制备远红外陶瓷粉体，采用X光小角散射法测试其颗粒分布和平均粒度，采用XRD分析其物相和SEM观察其显微结构形貌，结果表明，液相共沉淀法制备的远红外陶瓷粉体的平均粒度达到95纳米，且颗粒大小分布窄，而固相合成法制备的远红外陶瓷粉体颗粒粗大且不均匀，经中国计量科学研究院测试，液相共沉淀法制备的远红外陶瓷粉体的法向全辐射发射率为93％，固相合成法制备的远红外陶瓷粉体的法向全辐射发射率仅为82％。

STUDIES ON THE PROCESSING TECHNIQUES AND PROPERTIES OF NANOMETRE FAR-INFRARED CERAMIC POWDERS

Liquid phase codeposition method and solid phase synthesis are adopted separately to prepare far-infrared radiating ceramic powders in this study.Particle size distribution and average diameter are tested by small-angle X-ray scattering.Phase composition is analyzed by XRD and microstructure is observed by SEM.The results show that far-infrared ceramic powders average diameter by liquid phase codeposition method is 95.nm and narrow distribution.While the granules of far-infrared powders by solid phase synthesis are gross and particle size difference long adds.After the installed test by China Meterage Research Institute,the emissivity of far-infared ceramic powders by liquid phase codeposition method achieves 93% and the emissivity of far-infared ceramic powder by solid phase synthesis is merely 82%.