A new method for preparing powders for transmission electron microscopy examination.

Autor: Montone A; ENEA, Unità Materiali e Nuove Tecnologie, C.R. Casaccia, C.P. 2400, 00100 Roma AD, Italy., Antisari MV
Jazyk: angličtina
Zdroj: Micron (Oxford, England : 1993) [Micron] 2003; Vol. 34 (2), pp. 79-83.
DOI: 10.1016/s0968-4328(03)00019-2
Abstrakt: In this paper we describe a novel method to prepare powder specimens for transmission electron microscopy examination. The powder samples are embedded in a metallic matrix by a route based on the plastic flow of a soft metal, using a small laboratory type hand driven hydraulic press. The resulting composites are processed with the conventional procedure based on grinding polishing and ion beam milling. The resulting TEM specimens have a self-supporting structure, good thermal and electrical conductivity while showing a well-polished surface resulting from the ion milling process. The method can be applied to a large variety of samples with sufficiently strong mechanical properties; a few examples are reported. The limits, mainly due to the mechanical toughness of the powder, are discussed.
Databáze: MEDLINE