Effect of Micro Ti and TiO₂ P-25 Nano Powder Addition on Mechanical Properties of TiO₂ Nanopowders

Title:Effect of Micro Ti and TiO₂ P-25 Nano Powder Addition on Mechanical Properties of TiO₂ Nanopowders

Volume: 10 Issue: 1

Author(s): Hyo Young Park, Rumman Md Raihanuzzaman, Han-Jin Ko, Joon-Min Park, Young-Choon Kim and Soon-Jik Hong

Affiliation:

Keywords: Densification, magnetic pulsed compaction, mechanical properties, rutile, sintering, TiO₂ nanopowder.

Abstract: Sintered bodies of TiO₂nanopowders were fabricated by magnetic pulsed compaction (MPC) and subsequent 2 step sintering in this study and then, the effect of micro Ti and P-25 nano TiO₂ powder addition on density, shrinkage and hardness was investigated. The optimum processing conditions in order to find the maximum density, hardness and shrinkage were found to be 0.5~0.7 GPa MPC pressure and 1450^oC sintering temperature, with addition of 6% of TiO2 P-25 nanopowder. High pressure and rapid compaction using magnetic pulsed compaction (MPC) enhanced the density with increasing MPC pressure up to 0.7 GPa without the formation of surface or edge cracks on the consolidates bulks, and significantly reduced the shrinkage rate (about 15 in this case) of the sintered bulks compared to the general process (about 18%). Overall, most of the properties showed gradual changes with increasing MPC-ed pressure and TiO₂ P-25 nanopowder content.

Cite this article as:

Park Hyo Young, Raihanuzzaman Md Rumman, Ko Han-Jin, Park Joon-Min, Kim Young-Choon and Hong Soon-Jik, Effect of Micro Ti and TiO₂ P-25 Nano Powder Addition on Mechanical Properties of TiO₂ Nanopowders, Current Nanoscience 2014; 10 (1) . https://dx.doi.org/10.2174/1573413709666131111221403