摘要：为了改善陶瓷粉体的分散性差、易团聚等缺点,同时赋予陶瓷颗粒新的表面特性,形成满足特定需求的陶瓷复合粉体,对比分析近几十年来广泛应用的粉体颗粒表面包覆改性技术,包括物理气相沉积包覆法、化学气相沉积包覆法、液相化学法、机械改性法等,重点对高速气流冲击改性的设备和原理进行详细论述,指出高速气流冲击改性技术在制备核-壳型复合颗粒时具有成本低、工艺简单、包覆膜致密均匀、对环境危害小等优点,更加适合于制备陶瓷-金属复合粉体。

关键词：陶瓷-金属复合粉体；表面改性；高速气流冲击

Abstract： To overcome the shortcomings of poor dispersion and agglomeration of ceramic powders， and add new surface properties to ceramic particles to produce composite powders meeting special demands， the main surface modification technologies developed in recent decades， including physical vapor deposition （PVD）， chemical vapor deposition （CVD）， liquid phase method and mechano-chemistry method were compared and analyzed. The high speed airflow impact equipment and principle were disscussed detailly. The high-speed airflow technology was pointed to be more suitable for preparing ceramic-metal composite powders due to its advantage of low cost， simple process， compact and uniform coating film， less harmful to the environment in the fabrication of core-shell composite particles. 

Keywords: ceramic-metal composite powder； surface modification； high speed airflowimpact