| About this Abstract |
| Meeting |
2010 TMS Annual Meeting & Exhibition
|
| Symposium
|
2010 Functional and Structural Nanomaterials: Fabrication, Properties, Applications and Implications
|
| Presentation Title |
Influence of Using MgCO3 and MgO as Initial Materials on the Synthesis of Pure Nanocrystalline Forsterite Powder |
| Author(s) |
F. Tavangarian, R. Emadi, Ehsan Mohammadi Zahrani |
| On-Site Speaker (Planned) |
Ehsan Mohammadi Zahrani |
| Abstract Scope |
Pure nanocrystalline forsterite (Mg2SiO4) powder was synthesized by mechanical activation technique followed by subsequent annealing. The starting materials were talc (Mg3Si4O10(OH)2), magnesium carbonate (MgCO3) and magnesium oxide (MgO) powders. To produce forsterite, two mixtures were prepared including talc and magnesium oxide (first mixture) as well as talc and magnesium carbonate powders (second mixture). First, both mixtures were milled by a planetary ball mill, and then annealed at 1000°C and 1200°C for 1 h. Thermogravimetric (TG) analysis, X-ray diffraction (XRD) and SEM techniques were utilized to characterize synthesized powders. After 5 h of mechanical activation of the first mixture and subsequent annealing at 1000 °C for 1 h, pure nanocrystalline forsterite was synthesized with 40 nm particle size. A pure nanocrystalline forsterite with a particle size equal to 35 nm was obtained after 10 hr ball milling of the second mixture and subsequent annealing at 1000 °C for 1h. |
| Proceedings Inclusion? |
Undecided |