Accession Number:

ADA058807

Title:

The Role of Additives in the Densification of Nitrogen Ceramics.

Descriptive Note:

Final technical rept. Apr-Oct 77,

Corporate Author:

NEWCASTLE-UPON-TYNE UNIV (ENGLAND)

Personal Author(s):

Report Date:

1977-11-01

Pagination or Media Count:

123.0

Abstract:

The role of additives magnesia, yttria, ceria and zirconia in the densification of silicon nitride and b-sialon is investigated with the objective of improving the high-temperature mechanical and chemical properties of these nitrogen ceramics. Each of the oxide additions reacts with surface silica and some of the nitride to give an oxynitride liquid that promotes densification by the successive stages of particle rearrangement and solution-precipitation.

Subject Categories:

  • Ceramics, Refractories and Glass

Distribution Statement:

APPROVED FOR PUBLIC RELEASE