Phase transformation and bonding of ceramic nanoparticles in a TEM

Bing She Xu, Shunichiro Tanaka

Research output: Contribution to journalArticlepeer-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 languageEnglish
Pages (from-to)727-730
Number of pages4
JournalNanostructured Materials
Volume6
Issue number5-8
DOIs
Publication statusPublished - 1995 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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