Premium
Impedance Spectroscopy Study of Sintering in Bi‐Doped ZnO
Author(s) -
Kirkpatrick Kelly S.,
Mason Thomas O.,
Balachandran Uthamalingam,
Poeppel Roger B.
Publication year - 1994
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.1151-2916.1994.tb09747.x
Subject(s) - sintering , eutectic system , materials science , solidus , dielectric spectroscopy , phase diagram , doping , solubility , analytical chemistry (journal) , solid solution , solid state , phase (matter) , mineralogy , chemical engineering , metallurgy , microstructure , chemistry , electrochemistry , chromatography , optoelectronics , organic chemistry , alloy , electrode , engineering
Solid‐ and liquid‐state sintering kinetics in the (1 – x)ZnO‐xBi 2 O 3 system with 0 ≤ x ≤ 0.05 over the range 600 ≤ T (°C) ≤ 1100 were investigated by impedance spectroscopy. Compositions with x < 0.002 retarded sintering, whereas compositions with x ≥ 0.004 accelerated sintering above the eutectic temperature of 740°C. The results could be interpreted in terms of limited solid solubility of Bi 2 O 3 in ZnO ( x ≃ 0.004 ± 0.002), solid‐state sintering in the subsolidus, and liquid‐state sintering above the solidus. A phase diagram for the ZnO‐rich end of the system is proposed, based on these results.