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/]
Technical Report
·
OSTI ID:6348318
Two ..beta..' - Sialons of composition Si/sub 2/./sub 6/Al/sub 0/ /sub 393/Y/sub 0/./sub 007/O/sub 0/ /sub 4/N/sub 3/ /sub 6/ and Si/sub 26/Al/sub 0/ /sub 384/Y/sub 0/ /sub 014/O/sub 0/ /sub 4/N/sub 3/ /sub 6/ were pressureless sintered from mixtures of Y/sub 2/O/sub 3/ and separately milled ..beta.. -Si/sub 3/N/sub 4/, AlN, and SiO/sub 2/. These sialons had densities of over 98% of theoretical, four-point bend strengths of 460 and 155 MPa at room temperature and 1400 C, respectively, and 1400 C oxidation rates lower than those reported for hot pressed Si/sub 3/N/sub 4/ and for a stronger sialon with 2.5 weight percentage Y/sub 2/O/sub 3/.
- Research Organization:
- National Aeronautics and Space Administration, Cleveland, OH (USA). Lewis Research Center
- OSTI ID:
- 6348318
- Report Number(s):
- N-78-25215; NASA-TP-1246; E-9522
- Country of Publication:
- United States
- Language:
- English
Similar Records
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Conference
·
Fri Dec 30 23:00:00 EST 1994
·
OSTI ID:62850
Solubility limits of. alpha. prime SIAION solid solutions in the system Si,Al,Y/N,O
Journal Article
·
Tue Oct 01 00:00:00 EDT 1991
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·
OSTI ID:5766871
Crystal phase and phonon densities of states of {beta}{prime}-SiAlON ceramics, Si{sub 6{minus}z}Al{sub z}O{sub z}N{sub 8{minus}z} (0 {le} z {le} 4)
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Sat Nov 30 23:00:00 EST 1996
· Journal of the American Ceramic Society
·
OSTI ID:422733
Related Subjects
36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360203 -- Ceramics
Cermets
& Refractories-- Mechanical Properties
360205 -- Ceramics
Cermets
& Refractories-- Corrosion & Erosion
ALUMINIUM COMPOUNDS
ALUMINIUM NITRIDES
CHALCOGENIDES
CHEMICAL REACTIONS
DENSITY
FABRICATION
FLEXURAL STRENGTH
MECHANICAL PROPERTIES
MEDIUM TEMPERATURE
NITRIDES
NITROGEN COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PNICTIDES
SILICON COMPOUNDS
SILICON NITRIDES
SILICON OXIDES
SINTERING
TRANSITION ELEMENT COMPOUNDS
VERY HIGH TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360203 -- Ceramics
Cermets
& Refractories-- Mechanical Properties
360205 -- Ceramics
Cermets
& Refractories-- Corrosion & Erosion
ALUMINIUM COMPOUNDS
ALUMINIUM NITRIDES
CHALCOGENIDES
CHEMICAL REACTIONS
DENSITY
FABRICATION
FLEXURAL STRENGTH
MECHANICAL PROPERTIES
MEDIUM TEMPERATURE
NITRIDES
NITROGEN COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PNICTIDES
SILICON COMPOUNDS
SILICON NITRIDES
SILICON OXIDES
SINTERING
TRANSITION ELEMENT COMPOUNDS
VERY HIGH TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES