Fabrication Methods of Double Composites

摘要

This study shows an example for the application of the medium pressure infiltration technique for production of double composite. Prefabricated composite wires were applied as reinforcement in AlSi12 matrix. The reinforcing composite wires contain Nextel 440 ceramic fibres in pure (99,5%) aluminium matrix. These composite wires were produced by continuous infiltration process. I-profiles were fabricated using the composite wires for bending tests. These tests were done on composite wire reinforced and unreinforced pure AlSi12 samples and the results were compared. The interaction between the composite wire and AlSi12 matrix was examined by optical microscopy. The results of the examinations show strong contact between the reinforcement and secondary matrix and all of the reinforced specimens have higher bending strength than the unreinforced ones.