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Fabrication of SPS compacts from NbC-NbB2 powder mixtures synthesized by the MA-SHS in air process
| Title: | Fabrication of SPS compacts from NbC-NbB2 powder mixtures synthesized by the MA-SHS in air process |
| Authors: | Tsuchida, T.1 Browse this author →KAKEN DB | | Kakuta, T. Browse this author |
| Authors(alt): | 土田, 猛1 |
| Keywords: | Mechanical activation (MA) | | Nb/B/C powder mixtures | | Self-propagating high-temperature synthesis(SHS) | | Vickers hardness | | Spark plasma sintering (SPS) | | Ball milling | | NbC/NbB2 composite |
| Issue Date: | 18-May-2006 |
| Publisher: | Elsevier |
| Journal Title: | Journal of Alloys and Compounds |
| Volume: | 415 |
| Issue: | 1-2 |
| Start Page: | 156 |
| End Page: | 161 |
| Publisher DOI: | 10.1016/j.jallcom.2005.08.012 |
| Abstract: | When the powder mixture of Nb/B/C = 2/2/1 in molar ratio was mechanically activated (MA) by ball milling for 105 min and then exposed to air, it self-ignited spontaneously and the self-propagating high-temperature synthesis (SHS) was induced. The powder mixture of NbC and NbB2 was obtained by this MA–SHS in air process and then sintered by spark plasma sintering (SPS) at a temperature as low as 1800 °C. The sintered NbC/NbB2 composite compact showed the fine, homogeneous microstructure consisting of the a few μm-sized grains and the Vickers hardness of 19.8 GPa, which was higher than 14.3 and 16.6 GPa for the NbC/NbB2 composite compacts sintered from the powder mixture of Nb/B/C = 2/2/1 without MA–SHS and from the commercial powder mixture of NbC/NbB2 = 1/1. |
| Relation: | http://www.sciencedirect.com/science/journal/09258388 |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/13464 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 土田 猛
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