Electron microscopy of size distribution and growth of small zinc crystals formed by homogeneous nucleation in a flowing inert‐gas system
作者:
J. D. Eversole,
H. P. Broida,
期刊:
Journal of Applied Physics
(AIP Available online 1974)
卷期:
Volume 45,
issue 2
页码: 596-602
ISSN:0021-8979
年代: 1974
DOI:10.1063/1.1663290
出版商: AIP
数据来源: AIP
摘要:
Homogeneous nucleation of small Zn particles has been observed in a flowing inert‐gas system. Zn vapor was produced by heating the bulk metal near 700 K in flowing N2at pressures near 15 Torr. Nucleation of small Zn particles took place in a cooler region downstream from the furnace. Cooling occurred by gas conduction to room‐temperature walls. Particle sizes measured by electron microscopy were from 5 to 5000 nm. Samples were obtained with varying metal temperature, gas flow rate, pressure, and position in the collection chamber. Particles grew with time and had a predominant shape characterized as a regular hexagonal prism.
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