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- Title
Fabrication and Microstructure Characterization of Ti[sub3]SiC[sub2] Synthesized from Ti/Si/2TiC Powders Using the Pulse Discharge Sintering (PDS) Technique.
- Authors
Zhe-Feng Zhang; Zheng Ming Sun; Hashimoto, Hitoshi; Abe, Toshihiko
- Abstract
Ti/Si/2TiC powders were prepared using a mixture method (M) and a mechanical alloying (MA) method to fabricate Ti[sub 3]SiC[sub 2] at 1200°-1400°C using a pulse discharge sintering (PDS) technique. The results showed that the Ti[sub 3]SiC[sub 2] samples with <5 wt% TiC could be rapidly synthesized from the M powders; however, the TiC content was always >18 wt% in the MA samples. Further sintering of the M powder showed that the purity of Ti[sub 3]SiC[sub 2] could be improved to >97 wt% at 1250°-1300°C, which is ∼200°-300°C lower than that of sintered Ti/Si/C and Ti/SiC/C powders using the hot isostatic pressing (HIPing) technique. The microstructure of Ti[sub 3]SiC[sub 2] also could be controlled using three types of powders, i.e., fine, coarse, or duplex-grained, within the sintering temperature range. In comparison with Ti/Si/C and Ti/SiC/C mixture powders, it has been suggested that high-purity Ti[sub 3]SiC[sub 2] could be rapidly synthesized by sintering the Ti/Si/TiC powder mixture at relatively lower temperature using the PDS technique.
- Subjects
CARBIDES; MICROSTRUCTURE; POWDERS; SINTERING
- Publication
Journal of the American Ceramic Society, 2003, Vol 86, Issue 3, p431
- ISSN
0002-7820
- Publication type
Article
- DOI
10.1111/j.1151-2916.2003.tb03317.x