Mechanosynthesized and ultra-fast quenched AgI-Ag2O-B2O3 materials with high AgI contents
PBN-AR
Instytucja
Wydział Fizyki (Politechnika Warszawska)
Informacje podstawowe
Główny język publikacji
en
Czasopismo
Solid State Ionics
ISSN
0167-2738
EISSN
Wydawca
Elsevier BV - North-Holland
DOI
Rok publikacji
2013
Numer zeszytu
Strony od-do
55-58
Numer tomu
251
Identyfikator DOI
Liczba arkuszy
0.5
Streszczenia
Język
en
Treść
The 78AgI, 16.5Ag2O, and 5.5B2O3 mol% powder mixture, ultra-fast quenched 78AgI-16.5Ag2O-5.5B2O3 glass containing α-AgI crystalline precipitates and pristine AgI were ball-milled at a high rotation speed. For all the materials, the processing did not cause formation of α-AgI phase, in contrary, it prompted α to β phase transition of the α-AgI precipitates in the glass. Nanosize scale β/γ-AgI grains were detected both in the milled powder mixture and in the glass but not in the pristine AgI powder. The decrease of α to β phase transition temperature was observed for the milled materials during cooling from 170 °C, ca. 10 °C, 60 °C and 75 °C respectively for the AgI powder, the powder mixture and the glass. Stabilization of the α-AgI to low temperatures was related to the nanosize scale β/γ-AgI grains. The work demonstrates, that although it is not possible to stabilize α-AgI in pure silver iodide powder by ball-milling, nevertheless it is achievable for mixtures with high AgI contents. © 2013 Elsevier B.V. All rights reserved.
Inne
System-identifier
WUT266753
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