Effect of Oxygen Contamination on Densification of TiB2

Effect of Oxygen Contamination on Densification of TiB2

In order to identify the mechanisms behind the adverse effect of oxygen contamination on the densification of TiB2 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 obs...

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Veröffentlicht in:Journal of the American Ceramic Society 1987-08, Vol.70 (8), p.527-530
Hauptverfasser: BAIK, SUNGGI, BECHER, PAUL F.
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Exact sciences and technology
Technical ceramics
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Zusammenfassung:In order to identify the mechanisms behind the adverse effect of oxygen contamination on the densification of TiB2 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.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.1987.tb05699.x