Processing of C fibres Mg matrix composites via pre-infiltration with Al. A. Mertens, H.-M. Montrieux, J. Halleux, J. Lecomte-Beckers and F. Delannay. Euromat 2011, Montpellier. Outline. Introduction Experimental Procedure Results and Discussion Conclusions Prospects.
Processing of C fibres Mg matrix composites via pre-infiltration with Al
A. Mertens, H.-M. Montrieux, J. Halleux, J. Lecomte-Beckers and F. Delannay
Euromat 2011, Montpellier
* [Rocher et al., 1989; Schamm et al., 1991; Margueritat-Regenet, 2002…]
C fibre pretreated with K2ZrF6
C yarn pre-infiltrated with Al
Small white precipitates result from the decomposition of K2ZrF6
High variability in tensile tests
UTS ranging from 28 to 78 MPa
Fibres pull out at the interface between AZ91D matrix and pre-infiltrated yarn
No extensive damage on the C fibre
The zone close to the interface is very disturbed (precipitates, porosities…)
Presence of an oxide layer on the pre-infiltrated yarn?
Reaction between that layer and Mg?
A few small areas are contaminated by an excess of precipitates resulting from the decomposition of K2ZrF6
No detectable oxides layer (SEM)