Reaction of Si/sub 3/N/sub 4/ and Al/sub 2/O/sub 3/ and Y/sub 2/O/sub 3/
Journal Article
·
· Am. Ceram. Soc. Bull.; (United States)
The reaction of Si/sub 3/N/sub 4/, Al/sub 2/O/sub 3/, and Y/sub 2/O/sub 3/ was studied to determine whether Y/sub 2/O/sub 3/ acts as a densification aid in the formation of sialon (silicon-aluminum oxynitride solid solution). An x-ray diffraction pattern different from that of Si/sub 3/N/sub 4/-Y/sub 2/O/sub 3/, Si/sub 3/N/sub 4/-3Y/sub 2/O/sub 3/, and Al/sub 2/O/sub 3/-Y/sub 2/O/sub 3/ was observed. Hot-pressing tests on the new mixture suggest that its probable composition is 5Y/sub 2/O/sub 3/-Si/sub 3/N/sub 4/-Al/sub 2/O/sub 3/. Sinterability of mixtures containing 2 wt percent Y/sub 2/O/sub 3/ increased with increasing Al/sub 2/O/sub 3/ content to a maximum at 50 wt percent Al/sub 2/O/sub 3/.
- Research Organization:
- Systems Research Labs., Inc., Dayton, OH
- OSTI ID:
- 7360522
- Journal Information:
- Am. Ceram. Soc. Bull.; (United States), Journal Name: Am. Ceram. Soc. Bull.; (United States) Vol. 58; ISSN ACSBA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Pressureless sintered sialons with low amounts of sintering aid. [Si/sub 2/ /sub 6/Al/sub 0/ /sup 3//sub 93/Y/sub 0/ /sub 007/O/sub 0/ /sub 4/N/sub 36/ and Si/sub 2/ /sub 6/Al/sub 0/ /sub 384/ O/sub 0/ /sub 4/N/sub 33/ /sub 0/]
Synthesis of Si/sub 3/N/sub 4/ powder by thermal decomposition of Si(NH)/sub 2/ and sintering properties
Microstructure of Y/sub 2/O/sub 3/ fluxed hot-pressed silicon nitride
Technical Report
·
Thu Jun 01 00:00:00 EDT 1978
·
OSTI ID:6348318
Synthesis of Si/sub 3/N/sub 4/ powder by thermal decomposition of Si(NH)/sub 2/ and sintering properties
Conference
·
Tue Oct 01 00:00:00 EDT 1985
· Ceram. Eng. Sci. Proc.; (United States)
·
OSTI ID:5549392
Microstructure of Y/sub 2/O/sub 3/ fluxed hot-pressed silicon nitride
Journal Article
·
Tue Feb 28 23:00:00 EST 1978
· J. Am. Ceram. Soc.; (United States)
·
OSTI ID:6214533
Related Subjects
36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
DENSITY
FABRICATION
HOT PRESSING
MATERIALS WORKING
NITRIDES
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
PHYSICAL PROPERTIES
PNICTIDES
PRESSING
SILICON COMPOUNDS
SILICON NITRIDES
SINTERED MATERIALS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
DENSITY
FABRICATION
HOT PRESSING
MATERIALS WORKING
NITRIDES
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
PHYSICAL PROPERTIES
PNICTIDES
PRESSING
SILICON COMPOUNDS
SILICON NITRIDES
SINTERED MATERIALS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES