Development of moldable, high density reaction bonded silicon nitrideIt is noted that currently available reaction bonded silicon nitride (RBSN) materials are limited by relatively low strength (up to 300 MPa) and oxidation resistance, primarily due to open porosity. Attention is given to technology that was developed and used to produce an improved grade of injection molded RBSN having a density of 2.8 g/cc, with significantly decreased open porosity and a strength exceeding 350 MPa. It is shown that these results are primarily due to advances in two areas: silicon powder processing, and nitriding technique. A comparison of room temperature strength and oxidation resistance of the new material with that of state-of-the-art RBSN, showed significant improvements. It is concluded that turbine stator vanes were produced to show that this improved RBSN technology has been reduced to engineering practice.
Document ID
19800059935
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Mangels, J. A. (Ford Motor Co. Dearborn, Mich., United States)
Date Acquired
August 10, 2013
Publication Date
April 1, 1980
Subject Category
Nonmetallic Materials
Meeting Information
Meeting: International Symposium on Automotive Propulsion Systems