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Mg AZ80/SiC composite bars fabricated by infiltration of porous ceramic preforms

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Abstract

Semi-industrial samples of Mg AZ80/SiC/50p composites (machined bars with o.d.=80 mm and length=150 mm, having a maximum 2 vol pct of retained porosity) were successfully fabricated by pressureless, low-pressure (under overpressure of about 0.3 MPa) and moderate-pressure (under overpressure of about 0.8 MPa) infiltration. Pressureless infiltration was completed in 24 hours under the flowing atmosphere of nitrogen, whereas the moderate and low-pressure infiltrations were performed under a static atmosphere of pressurized nitrogen for 7 and 0.5 hours, respectively. The composite samples obtained by all applied infiltration paths posessed a homogeneous microstructure and superior mechanical properties as compared to the nonreinforced matrix. Due to the improved productivity of composite fabrication in comparison with the other two infiltration paths investigated in this work, the moderate-pressure infiltration process was recognized as the most competitive.

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  1. Independent Researching plc, 2000, Maribor, Slovenia

    V. Kevorkijan (Principal Scientist)

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  1. V. Kevorkijan
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Kevorkijan, V. Mg AZ80/SiC composite bars fabricated by infiltration of porous ceramic preforms. Metall Mater Trans A 35, 707–715 (2004). https://doi.org/10.1007/s11661-004-0381-4

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  • DOI: https://doi.org/10.1007/s11661-004-0381-4

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