18.97.14.90
18.97.14.90
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SCIE SCOPUS
가스응축법에 의해 제조된 초미분 주석산화물의 크기 및 형상에 미치는 증발속도 및 가스압력의 영향
Research Paper - Physical Chemistry - : Effect of Evaporation Rate and Gas Pressure on the Size and Morphology of Ultrafine Tin Oxide Powder Produced by Gas Condensation Method
안재평(Jae Pyoung Ahn), 박종구(Jong Ku Park), 허무영(Moo Young Huh)
UCI I410-ECN-0102-2009-580-007397130

The effects of evaporation rate and pressure of helium gas on the size of ultrafine tin oxide powder were studied in a gas condensation method. The velocity and size of convection current of helium gas were regulated by varying gas pressure in the chamber and temperature of an evaporation source. As the convection current became slow in velocity and reduced in size, the average size of the synthesized tin oxide powder increased. The respective effects of evaporation rate and gas pressure were analyzed by computer simulation of convection currents at a steady state condition, based on the experimental results. Oxygen gas flown into a condensation chamber filled with constant helium gas provided a proper condition for synthesis of ultrafine tin oxide powder having a narrow size distribution.

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