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The characterization of an SCS6/Ti–6Al–4V MMC interphase

Published online by Cambridge University Press:  31 January 2011

C. Jones ,
C. J. Kiely  and
S. S. Wang
C. Jones
Affiliation:
National Center for Composite Materials Research, College of Engineering, University of Illinois, Urbana, Illinois 61801
C. J. Kiely
Affiliation:
Materials Research Laboratory, University of Illinois, Urbana, Illinois 61801
S. S. Wang
Affiliation:
National Center for Composite Materials Research, College of Engineering, University of Illinois. Urbana, Illinois 61801
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Abstract

Using TEM, Auger spectroscopy, EDX, and convergent beam electron diffraction, a thorough characterization of the interphase region between SCS6 fibers and Ti–6Al–4V matrix in a metal matrix composite has been performed. The interphase region is shown to be very complex, consisting of numerous layers of varying compositions and thicknesses. The chemical interaction of the fiber and matrix results in a 0.5–1.5 μm thick TiC layer. Evidence for the existence of a Tix Siy (C) layer is also presented. The SCS6 overlayer on the fibers has inhibited any chemical interaction between the matrix and the SiC filament itself, 60% of the interphase region originating from the SCS6 protective coating. In situ fracture experiments (in an Auger spectrometer) reveal that fracture takes place between the TiC and an amorphous carbon layer.

Type
Articles
Information
Journal of Materials Research , Volume 4 , Issue 2 , April 1989 , pp. 327 - 335
Copyright
Copyright © Materials Research Society 1989

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References

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