Effect of Atmosphere on Synthesizing Hollow Ceramic Microspheres by Self-reactive Flame Quenching Technology

摘要

In order to obtain high comprehensive performance hollow ceramic microspheres (HCMs), used Al-Cr2O3 as the main reaction system, HCMs were prepared by Self-reactive flame quenching technology in Ar2 and N2 atmosphere respectively. Effects of the two different atmospheres on synthesizing HCMs were studied. Results show that in Ar2 atmosphere, because of incomplete reaction of agglomerate powders, porous particles with hollow structure and smooth-faced HCMs constitute the products. However in N2 atmosphere, because agglomerate powders react completely, all of them become smooth-faced HCMs. Results above show that experiment atmosphere is a important parameter to synthesize HCMs and to a great extent influences reaction process of agglomerate powders in the flame field.