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Effect of Oxygen Contamination on Densification of TiB 2
Author(s) -
BAIK SUNGGI,
BECHER PAUL F.
Publication year - 1987
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.1151-2916.1987.tb05699.x
Subject(s) - contamination , oxygen , sintering , materials science , ceramic , grain size , pressureless sintering , metallurgy , hot pressing , pressing , mineralogy , chemical engineering , chemistry , composite material , ecology , organic chemistry , engineering , biology
In order to identify the mechanisms behind the adverse effect of oxygen contamination on the densification of TiB 2 ceramics, densification and grain growth behavior during pressureless sintering (1700° to 2050°C) were examined as a function of oxygen content of the powder and compared with those observed during hot‐pressing (1400° to 1700°C). Marked difference in the grain size‐density relations was observed between the two processing methods. Specific roles of oxygen in various kinetic processes were analyzed and the likely oxygen‐bearing species were also identified.