Mechanochemically assisted preparation of NbB2 powder

Mechanochemically assisted preparation of NbB2 powder

A powder mixture of Nb-B (1:2) was milled using milling media of different sizes in a planetary ball mill, and NbB2 was mechanochemically prepared. When the mixture was milled with 5mm diameter balls, NbB2 started to form in 20h and the single phase NbB2 was obtained in 50h. The time required for th...

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Veröffentlicht in:Journal of the European Ceramic Society 2006, Vol.26 (4-5), p.635-638
Hauptverfasser: IIZUMI, Kiyokata, SEKIYA, Chiharu, OKADA, Shigeru, KUDOU, Kunio, SHISHIDO, Toetsu
Format: Artikel
Sprache:eng
Schlagworte:
Chemistry
Colloidal state and disperse state
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
General and physical chemistry
Machining, milling
Materials science
Materials synthesis
materials processing
Physics
Powders
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Zusammenfassung:A powder mixture of Nb-B (1:2) was milled using milling media of different sizes in a planetary ball mill, and NbB2 was mechanochemically prepared. When the mixture was milled with 5mm diameter balls, NbB2 started to form in 20h and the single phase NbB2 was obtained in 50h. The time required for the NbB2 formation and the single phase decreased with the increase in the ball size. The lattice parameters of the NbB2 obtained were a=0DDT3112nm, c=0DDT3276nm. The average particle size of the NbB2 powder obtained by milling with the 5 and 9mm diameter balls for 50h was approximately 370nm.
ISSN:0955-2219
1873-619X
DOI:10.1016/j.jeurceramsoc.2005.06.012