Fabrication of SPS compacts from NbC-NbB2 powder mixtures synthesized by the MA-SHS in air process

Tsuchida, T.; Kakuta, T.

Journal of Alloys and Compounds, 2006, 415(1-2), 156-161

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アクセス権
open access
URI
https://hdl.handle.net/2115/13464
タイトル
Fabrication of SPS compacts from NbC-NbB2 powder mixtures synthesized by the MA-SHS in air process
著者
e-Rad_Researcher
40041959
著者名
Tsuchida, T.
土田, 猛
著者名
Kakuta, T.
言語
英語
キーワード
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
発行日
2006-05-18
出版者
Elsevier
収録物名
Journal of Alloys and Compounds
巻(号)
415(1-2)
ページ
156-161
抄録
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.
資源タイプ
学術雑誌論文
出版タイプ
Accepted Manuscript
PISSN
0925-8388
関連情報
URI
http://www.sciencedirect.com/science/journal/09258388
関連情報 (isVersionOf)
出版社版DOI
https://doi.org/10.1016/j.jallcom.2005.08.012