Original scientific paper

Evidence of Mechanical Alloying in Bali Milled ZrO₂-Y₂O₃ System Based on HRTEM Image Processing Analysis

Anđelka Tonejc ; Department of Physics, Faculty of Science, University of Zagreb, Bijenička c. 32, 10000 Zagreb, Croatia
Antun Tonejc ; Department of Physics, Faculty of Science, University of Zagreb, Bijenička c. 32, 10000 Zagreb, Croatia
George W. Farrants ; Calidris, Sollentuna, Svueden
Sven Hovmöller ; Department of Structural Chemistry, Stockholm University, Stockholm, Sweden

Abstract

We investigated, using high resolution electron microscopy and image processing, the early stages of the mechanical alloying process of a mixture of zirconia and yttrium oxide powders. Molar fraction of yttrium oxide was 0.10. We focused our investigation on the grain boundary region and the region of overlapping layers of zirconia and yttria. Fourier filtering revealed, at the atomic level, one possible sequence of alloying, which occurred in the grain boundary and in the overlapping layers.

Keywords

HRTEM; image processing; ceramics; mechanical alloying; ball milling

Hrčak ID:

132174

URI

https://hrcak.srce.hr/132174

Publication date:

1.9.1999.

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