MICROSTRUCTURAL STUDIES OF ULTRAFINE IRON PARTICLES

Abstract

Abstract: The constitution,structure and surface state of the ultrafine iron particles prepared by gas evaporation technique have been investigated by means of X-ray analysis,high-reasolution electron microscopy(HREM)and electron spectroscopy for chemical analysis(ESCA).The results showed that the fine particles are spherical ones of～20 nm in diameter with α-Fe cores and covered by Fe_3O_4 fine crystalline layers of～4 nm thickness.

Key words: ultrafine particle, microstructure, high-resolution lattice image

WANG Shuhe CAI Yuling AN Gang WEN Lishi ZHUANG Yuzhi Institute of Metal Research,Academia Sinica,Shenyang,China WANG Shuhe,Associate Professor,Institute of Metal Research,Academia Sinica,Shenyang 110015,China. MICROSTRUCTURAL STUDIES OF ULTRAFINE IRON PARTICLES[J]. Acta Metallurgica Sinica (English Letters), 1990, 3(8): 136-139.

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MICROSTRUCTURAL STUDIES OF ULTRAFINE IRON PARTICLES

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