Solid-liquid reaction in the Si{sub 3}-N{sub 4}-AlN-Y{sub 2}O{sub 3} system under 1 MPa of nitrogen

Journal Article · Sat Jun 01 04:00:00 EDT 1996 · Journal of the American Ceramic Society

DOI:https://doi.org/10.1111/j.1151-2916.1996.tb08793.x· OSTI ID:271687

Huang, Z K; Tien, T Y ^[1]

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1. Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Materials Science and Engineering

The melting behaviors of selected compositions in the Si{sub 3}N{sub 4}-AlN-Y{sub 2}O{sub 3} system were determined under 1 MPa of nitrogen. The phase diagrams of the ternary and their binary systems are presented. The lowest melting composition of the ternary system contains 15 mol% Si{sub 3}N{sub 4}, 25 mol% AlN, and 60 mol% Y{sub 2}O{sub 3} and has a melting temperature of 1,650 C. The binary eutectic compositions and temperatures are 15 mol% Si{sub 3}N{sub 4} and 85 mol% Y{sub 2}O{sub 3} at 1,720 C, and 20 mol% AlN and 80 mol% Y{sub 2}O{sub 3} at 1,730 C.

• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 271687
• Journal Information: Journal of the American Ceramic Society, Journal Name: Journal of the American Ceramic Society Journal Issue: 6 Vol. 79; ISSN 0002-7820; ISSN JACTAW
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM NITRIDES
CHEMICAL COMPOSITION
EUTECTICS
MELTING
PHASE DIAGRAMS
POWDERS
SCANNING ELECTRON MICROSCOPY
SILICON NITRIDES
SINTERING
TEMPERATURE DEPENDENCE
X-RAY DIFFRACTION
YTTRIUM OXIDES