Interfacial reaction of coated SiC fibers with gamma-TiAl

Journal Article · Wed Apr 01 00:00:00 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]

---

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), Vol. 26; ISSN 0956-716X
• Country of Publication: United States
• Language: English

Related Subjects

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