Development of a high temperature Cf/XSi2-SiC (X = Mo, Ti) composite via reactive melt infiltration

A Cf/(Mo,Ti) Si2-SiC composite has been developed using the melt infiltration technique. Two types of carbon fibre preforms were infiltrated with an alloyed melt of Si, Ti and MoSi2. In order to prevent the melt from reacting heavily with the fibres and to maintain the reinforcing effect of the pref...

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Bibliographic Details
Published in:Journal of the European Ceramic Society 2007, Vol.27 (2-3), p.1229-1235
Main Authors: ESFEHANIAN, M, GÜNSTER, J, MOZTARZADEH, F, HEINRICH, J. G
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Cermets, ceramic and refractory composites
Chemical industry and chemicals
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Other materials
Physics
Specific materials
Structural ceramics
Technical ceramics
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Summary:A Cf/(Mo,Ti) Si2-SiC composite has been developed using the melt infiltration technique. Two types of carbon fibre preforms were infiltrated with an alloyed melt of Si, Ti and MoSi2. In order to prevent the melt from reacting heavily with the fibres and to maintain the reinforcing effect of the preforms, the melting point of this alloy should be lower than 1600 C. An induction tube furnace was used to infiltrate the carbon preforms. The carbon preform was mechanically driven into the melt and kept there for 10-15 min. The infiltrated samples were studied using XRD and SEM. Silicon free composites could be obtained using this technique. SiC was the major phase of the matrix. MoSi2 and solid solutions of Si, Mo and Ti were also found in the matrix. 25 refs.
ISSN:0955-2219
1873-619X
DOI:10.1016/j.jeurceramsoc.2006.05.058