Browse > Article
http://dx.doi.org/10.4150/KPMI.2005.12.4.273

Synthesis of TiN/TiB2/Ti-silicides Nanocomposite Powders by Mechanochemical Reaction and its Reaction Mechanism  

Cho Young-Whan (Nano-Materials Research Center, Korea Institute of Science and Technology)
Kim Ji-Woo (Nano-Materials Research Center, Korea Institute of Science and Technology)
Shim Jae-Hyeok (Nano-Materials Research Center, Korea Institute of Science and Technology)
Ahn Jae-Pyoung (Nano-Materials Research Center, Korea Institute of Science and Technology)
Oh Kyu-Hwan (School of Materials Science and Engineering, Seoul National University)
Publication Information
Journal of Powder Materials / v.12, no.4, 2005 , pp. 273-278 More about this Journal
Abstract
Nanostructured TiN/$TiB_2$/$TiSi_2$ and TiN/$TiB_2$/$Ti_5Si_2$ composite powders have been prepared by mechanochemical reaction from mixtures of Ti, BN, and $Si_3N_4$ powders. The raw materials have reacted to form a uniform mixture of TiN, $TiB_2$ and $TiSi_2$ or $Ti_5Si_3$ depending on the amount of $Si_3N_4$ used in the starting mixtures, and the reaction proceeded through so-called mechanically activated self-sustaining reaction (MSR). Fine TiN and $TiB_2$ crystallites less than a few tens of nanometer were homogeneously dispersed in the amorphous $TiSi_2$ or $Ti_5Si_3$ matrix after milling for 12 hours. These amorphous matrices became crystalline phases after annealing at high temperatures as expected, but the original microstructure did not change significantly.
Keywords
Composite materials; Nanostructured materials; Mechanochemical processing; X-ray diffraction; Transmission electron microscopy;
Citations & Related Records
연도 인용수 순위
  • Reference
1 J. H. Shim, J. S. Byun and Y. W. Cho: Scr. Mater., 47 (2002) 493   DOI   ScienceOn
2 J. S. Byun, J. H. Shim and Y. W. Cho: J. Alloys and Compounds, 365 (2004) 149   DOI   ScienceOn
3 B. D. Cullity and S. R. Stock: Elements of X-ray diffraction, Prentice Hall, London (2001) 167
4 L. Takacs: Prog. Mater. Sci., 47 (2002) 355   DOI   ScienceOn
5 Z. A. Munir: Am. Ceram. Soc. Bull., 67 (1988) 342
6 J. W. Kim, H. S. Chung, J. H. Shim, J. P. Ahn, Y. W. Cho and K. H. Oh: to be published in J. Alloys and Compounds
7 J. H. Shim, J. S. Byun and Y. W. Cho: J. Am. Ceram. Soc., 87 (2004) 1853   DOI   ScienceOn
8 J. S. Byun, J. H. Shim and Y. W. Cho: Scr. Mater., 50 (2004) 279   DOI   ScienceOn
9 J. H. Shim, J. S. Byun and Y. W. Cho: J. Metastable and Nanocrystalline Mater., 15-16 (2003) 557   DOI