Accession Number:

ADA022696

Title:

Process Development for Pressureless Sintering of SiAlON Ceramic Components.

Descriptive Note:

Final rept. Jan 75-Jan 76,

Corporate Author:

UNITED TECHNOLOGIES RESEARCH CENTER EAST HARTFORD CONN

Personal Author(s):

• Layden,George K.

Report Date:

1976-01-03

Pagination or Media Count:

77.0

Abstract:

Phase equilibrium was studied in the system Si3N4-AlN-Al2O3-SiO2. A broad two phase field of liquids in equilibrium with Beta SiA1ON solid solutions was found to exist at temperatures above about 1750 C. Initial studies were undertaken to exploit this two phase field to effect a homogeneous transient liquid phase sintering of Beta compositions. Author

Descriptors:

• *CERAMIC MATERIALS
• *GAS TURBINES
• *SINTERING
• DENSITY
• MICROSTRUCTURE
• ALUMINUM COMPOUNDS
• PRODUCTION
• PROCESSING
• X RAY DIFFRACTION
• EQUILIBRIUM(GENERAL)
• NITROGEN
• OXYGEN
• THERMAL ANALYSIS
• LIQUID PHASES
• SILICON
• TEMPERATURE CONTROL
• SILICATES
• PHASE DIAGRAMS
• SILICON NITRIDES
• FIRING(CERAMICS)

Subject Categories:

• Ceramics, Refractories and Glass
• Jet and Gas Turbine Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE