National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Nanočástice Fe a Fe3O4 v matrici ZrO2
Roupcová, Pavla ; Schneeweiss, Oldřich
Changes in the phase composition and the mean particles size of nanocrystalline Zr-Fe powdered prepared by mixing of pure ZrO2 and iron oxides were investigated in dependence of the heat treatment in vacuum and hydrogen atmosphere.
Fázové přechody v nanokrystalické slitině Zr-Fe indukované vodíkem
Roupcová, Pavla ; Schneeweiss, Oldřich ; Pizúrová, Naděžda ; Zhu, Min
Nanocrystalline composite based on Zr-Fe alloy is investigated. In the as-prepared powder composite ZrO2, Zr3FeH7, alpha-Fe, Fe2Zr and amorphous phases were recognized. During an annealing in vacuum crystalline and a few manner of amorphous phases transforms to ZrO2. The attempts to hydrogenate the same sample by annealing in hydrogen of the ambient pressure were successful at temperatures above - 673 K.

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