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Title: Theoretical analysis of compatibility of several reinforcement materials with NiAl and FeAl matrices

Conference ·
OSTI ID:5613590

Several potential reinforcement materials were assessed for their chemical, coefficient of thermal expansion (CTE), and mechanical compatibility with the intermetallic matrices based on NiAl and FeAl. Among the ceramic reinforcement materials, Al2O3, TiC, and TiB2, appear to be the optimum choices for NiAl and FeAl matrices. However, the problem of CTE mismatch with the matrix needs to be solved for these three reinforcement materials. Beryllium-rich intermetallic compounds can be considered as potential reinforcement materials provided suitable reaction barrier coatings can be developed for these. Based on preliminary thermodynamic calculations, Sc2O3 and TiC appear to be suitable as reaction barrier coatings for the beryllides. Several reaction barrier coatings are also suggested for the currently available SiC fibers.

Research Organization:
Sverdrup Technology, Inc., Cleveland, OH (USA)
OSTI ID:
5613590
Report Number(s):
N-89-23622; NASA-CR-182291; E-4796; NAS-1.26:182291; CONF-890130-
Resource Relation:
Conference: 13. annual conference on composites and advanced ceramics, Cocoa Beach, FL (USA), 15-18 Jan 1989; Other Information: Final Contractor Report; sponsored by Advanced Ceramics Association
Country of Publication:
United States
Language:
English