Pure Ti and Si powders were milled in a horizontal-rotation ball mill and in a high-energy ball mill to synthesize Ti5Si3 powders. The high-energy ball milling produced nanosized single-phase Ti5Si3 particles. Meanwhile, no reaction occurred during the horizontal milling. The two milled powders were consolidated using the high-frequency induction heated sintering method. A dense nanostructured Ti5Si3 compact was consolidated within 2 min using the mechanically synthesized Ti5Si3 powder. The retainment of nanoscale structure during sintering is believed to be the reason for the good mechanical properties of the Ti5Si3 compact. In comparison, the horizontally milled powder reacted to form Ti5Si3 partially on sintering. It is believed that the enhanced toughness of the horizontally milled samples may be due to the crack-deterring effect of softer Si/Ti grains.
Research on Chemical Intermediates – Springer Journals
Published: Aug 15, 2012
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