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40% porous composites ZrB 2 –39mol.% SiC were irradiated under a mobile laser beam, with a low power of 90W, in a protective atmosphere of flowing argon. Quasi-full densification of the surface zone was obtained, with thicknesses of more than 20μm. Temperature reached ca. 2500°C and a fusible phase rich in SiC appeared, which partially dissolved the ZrB 2 , favouring its sintering...
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