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 · Journal of the American Ceramic Society; (United States)

DOI:https://doi.org/10.1111/j.1151-2916.1991.tb06797.x· OSTI ID:5766871

Sun, W Y; Tien, T Y ^[1]; Yen, T S ^[2]

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1. Michigan Univ., Ann Arbor, MI (United States). Dept. of Materials Science and Engineering
2. Shanghai Inst. of Ceramics, Chinese Academy of Sciences, Shanghai (CN)

The solubility limit of {alpha}{prime}-SiAlON solid solutions on the Si{sub 3}N{sub 4}-YN:3AlN composition join in the system Si{sub 3}N{sub 4}-YN-AlN has been determined at 1800{degrees}C. The end members of these solid solutions are Y{sub 0.43}Si{sub 10.7}Al{sub 1.3}N{sub 16} and Y{sub 0.8}Si{sub 9.6}Al{sub 2.4}N{sub 16}. Unit-cell dimensions of the {alpha}{prime}-SiAlON solid solutions in the system Si,Al,Y/N,O can be expressed as follows: a{sub 0} ({Angstrom}) = 7.752 + 0.045m + 0.009n, c{sub 0} ({Angstrom}) = 5.620 + 0.048m + 0.009n, where the {alpha}{prime}-SiAlON solid solution has the formula Y{sub x}Si{sub 12{minus}(m + n)}Al{sub m+n}N{sub 16{minus}n}O{sub n}. The single-phase boundary of the solid solution {alpha}{prime}-SiAlON on the composition triangle Si{sub 3}N{sub 4}-YN:3AlN-Al;N:Al{sub 2}O{sub 3} is delineated. The present paper also reports the phase relationships involving {alpha}{prime}-SiAlON.

• OSTI ID: 5766871
• Journal Information: Journal of the American Ceramic Society; (United States), Journal Name: Journal of the American Ceramic Society; (United States) Vol. 74:10; ISSN 0002-7820; ISSN JACTA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALUMINIUM
DISPERSIONS
ELEMENTS
METALS
MIXTURES
NITROGEN
NONMETALS
OXYGEN
PHASE STUDIES
SEMIMETALS
SILICON
SOLID SOLUTIONS
SOLUBILITY
SOLUTIONS
TEMPERATURE RANGE
TEMPERATURE RANGE 1000-4000 K
TRANSITION ELEMENTS
YTTRIUM