| In this work, a Ti-37.5Si (at.%) alloy synthesized by mechanical alloying from Ti and Si powders was coated with Al by magnetron sputtering followed by hot isostatic pressing. The mechanically alloyed powders consisted of a Ti5Si3 intermetallic phase. Alcoating played a significant role in the final properties of the compacts. The TiAl3 phase formed on surface of the coated powders during compaction led to an increase of their sinterability. Values of 21.2 GPa and 5.9 MPam1/2 were obtained for hardness and fracture-toughness of the coated sample, which are twice-time larger than the values determined for uncoated sample. |
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