Phase transformation and bonding of ceramic nanoparticles in a TEM

Bing She Xu; Shunichiro Tanaka

doi:10.1016/0965-9773(95)00161-1

Phase transformation and bonding of ceramic nanoparticles in a TEM

Bing She Xu, Shunichiro Tanaka

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

Abstract

Remarkable nanoscopic changes were observed in-situ in metastable oxide particles on the room temperature stage of a TEM under as electron beam intensity of 10¹⁹ e/cm²sec. Particles of 10-15 nm diameter α-Al₂O₃ and 5nm diameter Al metal were obtained from 100nm metastable θ-Al₂O₃ particles by a process dependent on the electron beam intensity. Al nanoparticles were bonded by continuous irradiation via surface 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.

Original language	English
Pages (from-to)	727-730
Number of pages	4
Journal	Nanostructured Materials
Volume	6
Issue number	5-8
DOIs	https://doi.org/10.1016/0965-9773(95)00161-1
Publication status	Published - 1995 Jan 1
Externally published	Yes

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics

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abstract = "Remarkable nanoscopic changes were observed in-situ in metastable oxide particles on the room temperature stage of a TEM under as electron beam intensity of 1019 e/cm2sec. Particles of 10-15 nm diameter α-Al2O3 and 5nm diameter Al metal were obtained from 100nm metastable θ-Al2O3 particles by a process dependent on the electron beam intensity. Al nanoparticles were bonded by continuous irradiation via surface 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.",

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AB - Remarkable nanoscopic changes were observed in-situ in metastable oxide particles on the room temperature stage of a TEM under as electron beam intensity of 1019 e/cm2sec. Particles of 10-15 nm diameter α-Al2O3 and 5nm diameter Al metal were obtained from 100nm metastable θ-Al2O3 particles by a process dependent on the electron beam intensity. Al nanoparticles were bonded by continuous irradiation via surface 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.

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