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Microstructures of Simulated Nuclear Waste
Author(s) -
Chan Hing Wah,
Howitt David G.,
Harker Alan B.
Publication year - 1989
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1989.tb06266.x
Subject(s) - materials science , ceramic , microstructure , aluminosilicate , amorphous solid , phase (matter) , albite , mineralogy , mullite , hot isostatic pressing , metallurgy , hot pressing , tetragonal crystal system , silicate , cubic zirconia , composite material , chemical engineering , geology , chemistry , crystallography , catalysis , biochemistry , quartz , organic chemistry , engineering
The microstructures of simulated tailored ceramic forms for the Idaho Chemical Processing Plant (ICPP) high‐level waste were characterized by TEM. The ceramic forms were consolidated from simulated ICPP waste calcines with either silicayttria‐based or silica–lithia‐based additives by hot isostatic pressing. The hot isostatically pressed ceramic waste forms are composed of cubic CaF 2 , monoclinic ZrO 2 , stabilized cubic ZrO 2 , tetragonal ZrSiO 4 , and amorphous silicate phases which can be phase separated. The phaseseparated glass is a result of phase immiscibility in the soda aluminosilicate glass to the compositions of albite and mullite.