Interfacial reaction of coated SiC fibers with gamma-TiAl

Journal Article · Wed Apr 01 04:00:00 EST 1992 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(92)90227-6· OSTI ID:5161365

Goo, G K; Graves, J A; Mecartney, M L ^[1]

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1. California, University, Irvine (United States) Rockwell International Science Center, Thousand Oaks, CA (United States)

The reaction products at the interface between a gamma-TiAl matrix and reinforcing SiC fibers are presently identified by Auger spectroscopy, TEM, and EDS. A scheme is suggested for the reaction kinetics involved, in which the initial reaction between the TiAl and the C-rich SiC produces TiC(1-x); unreacted Al, rejected from this carbide, can then diffuse into both the matrix and (to a lesser extent) the SiC fiber itself. The unreacted Si in the fiber coating is rejected back into the fiber, but some diffuses through the TiC(1-x) layer to the reaction zone/matrix boundary, while trace amounts of unreacted Si remain in the reaction layer in solid solution. 22 refs.

• OSTI ID: 5161365
• Journal Information: Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 26; ISSN SCRME; ISSN 0956-716X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
ALLOYS
ALUMINIUM ALLOYS
CARBIDES
CARBON COMPOUNDS
CERAMICS
CHEMICAL REACTION YIELD
COMPOSITE MATERIALS
CRYSTAL STRUCTURE
DIAGRAMS
FIBERS
INTERFACES
KINETICS
MATERIALS
MICROSTRUCTURE
PHASE DIAGRAMS
REACTION KINETICS
SILICON CARBIDES
SILICON COMPOUNDS
TITANIUM ALLOYS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
YIELDS