Synthesis of millimeter-scale Al2O3 ceramic hollow spheres by an improved emulsion microencapsulation method
Source abstract
Abstract
Abstract Millimeter-scale Al 2 O 3 ceramic hollow spheres have been successfully prepared by an improved emulsion microencapsulation method. That is: Firstly, stable oil-in-water emulsion droplets, using alumina sol as continuous phases (water phase) and dimethicone as dispersion phase (oil phase), are prepared in advance by using self-made T-shape micro-emulsion channel as an emulsion droplet generator. Then, the prepared droplets suffer rotating process for 12 h at 100 °C in a rotary evaporator, and Al 2 O 3 gel hollow spheres are produced. Finally, Al 2 O 3 ceramic hollow spheres with wall thickness of 30~100 μm and diameter of 600~2500 μm are successfully prepared through calcining the produced gel hollow spheres at 1200 °C for 4 h. The main crystalline of the prepared Al 2 O 3 ceramic hollow spheres is α -Al 2 O 3 . This method provides a novel synthesizing method for preparing millimeter-scale ceramic hollow spheres which have great potential application in Inertial Confined Fusion (ICF) required hollow pellet.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Innovative Microfluidic and Catalytic Techniques Innovation · Fluid Dynamics and Heat Transfer · Electrohydrodynamics and Fluid Dynamics
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