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Sintering of reaction bonded silicon nitrideA process to produce sintered reaction-bonded Si3N4 (SRBSN) articles has been developed. This process consists of the addition of an appropriate sintering aid to reaction-bonded Si3N4 followed by sintering between 1780 and 2000 C, using an over pressure of nitrogen. The principal advantage of this process is the low sintering shrinkages of 5 to 10 percent. The properties and microstructure of two SRBSN systems sintered with MgO and Y2O3 additives are described and were found to be comparable to corresponding hot-pressed Si3N4 systems. Examples of applications of both systems are illustrated, demonstrating near net shape fabrication capability of the process.
Document ID
19830067052
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Mangels, J. A.
(Ford Motor Co., Ceramic Materials Dept., Dearborn MI, United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1983
Subject Category
Nonmetallic Materials
Accession Number
83A48270
Funding Number(s)
CONTRACT_GRANT: DEN3-167
Distribution Limits
Public
Copyright
Other

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