PHASE-TRANSFORMATION AND BONDING OF CERAMIC NANOPARTICLES IN A TEM

Authors
XU BS TANAKA S
Citation
Bs. Xu et S. Tanaka, PHASE-TRANSFORMATION AND BONDING OF CERAMIC NANOPARTICLES IN A TEM, Nanostructured materials, 6(5-8), 1995, pp. 727-730
Citations number
1
Categorie Soggetti
Material Science
Journal title
Nanostructured materials → ACNP
ISSN journal
09659773
Volume
6
Issue
5-8
Year of publication
1995
Pages
727 - 730
Database
ISI
SICI code
0965-9773(1995)6:5-8<727:PABOCN>2.0.ZU;2-N
Abstract
Remarkable nanoscopic changes were observed in-situ in metastable oxid e particles on the room temperature stage of a TEM under an electron b eam intensity of 10(19)e/cm(2)sec. Particles of 10-15 nm diameter alph a-Al2O3 and 5nm diameter Al metal were obtained from 100nm metastable theta-Al2O3 particles by a process dependent on the electron beam inte nsity. Al nanoparticles were bonded by continuous irradiation via surf ace diffusion of Al atom and the formation of 2 nm sized Al clusters. The effects of the electron beam are the irradiation induced increase of the oxygen mobility and localized heating.