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Effect of Bismuth of Oxide Content on the Sintering of Zinc Oxide
Author(s) -
Kim Jinho,
Kimura Toshio,
Yamaguchi Takashi
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.tb07703.x
Subject(s) - materials science , sintering , eutectic system , bismuth , microstructure , grain boundary , zinc , oxide , phase (matter) , doping , liquid phase , metallurgy , chemical engineering , chemistry , thermodynamics , physics , optoelectronics , organic chemistry , engineering
Densification and microstructure de velopment in Bi 2 O 3 ‐doped ZnO have been studied with a special emphasis on the effect of the Bi 2 O 3 content. A small amount of Bi 2 O 3 in ZnO (0.1 mol%) retarded densification, but the addition of Bi 2 O 3 to more than 0.5 mol% promoted densification by the formation of a liquid phase above the eutectic temperature (∼740°C). The liquid phase increased grain‐boundary mobility, which was responsible for the formation of intragrain pores and the decrease in the sintered density. The increase in the Bi 2 O 3 content increased the probability of the formation of skeleton structure, which reduced the grain growth rate and the sintered density.