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Synthesis, Sintering, and Microstructure of Nasicons
Author(s) -
KURIAKOSE A. K.,
WHEAT T. A.,
AHMAD A.,
DIROCCO J.
Publication year - 1984
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.1151-2916.1984.tb19737.x
Subject(s) - sintering , cubic zirconia , microstructure , materials science , liquid phase , phase (matter) , characterization (materials science) , chemical engineering , kinetics , mineralogy , metallurgy , ceramic , chemistry , nanotechnology , thermodynamics , physics , organic chemistry , quantum mechanics , engineering
The preparation and characterization of Hong and von Alpen types of Nasicons are described. When highly reactive gel‐processed powders are heated at about 1000°C, Nasicons are formed in a finely divided state. Sintering of compacts requires 1125° to 1325°C, depending on the composition. Observed sintering kinetics suggest a liquid‐phase mechanism; SEM reveals the Hong Nasicons to contain two (when zirconia‐free) or three phases. The von Alpen materials are zirconia‐free, but consist of two phases. A glass phase is common to both materials, and its presence is attributed to the liquid‐phase sintering mechanism.