The Effect of Milling Media on Mechanochemical Synthesis of NbB2 Powder

DOI Web Site 1 Citations 12 References
  • Iizumi Kiyokata
    Department of Nanochemistry, Faculty of Engineering, Tokyo Polytechnic University
  • Sekiya Chiharu
    Graduate School of Engineering, Tokyo Polytechnic University
  • Okada Shigeru
    Department of Civil and Environmental Engineering, Faculty of Engineering, Kokushikan University
  • Shishido Toetsu
    Institute for Material Research, Tohoku University
  • Kudou Kunio
    Department of Mechanical Engineering, Faculty of Engineering, Kanagawa University

Bibliographic Information

Other Title
  • ＮｂＢ２粉末のメカノケミカル合成におよぼす粉砕媒体の影響
  • NbB2 フンマツ ノ メカノケミカル ゴウセイ ニ オヨボス フンサイ バイタイ ノ エイキョウ

Search this article

Description

NbB2 (AlB2-type, hexagonal) powder was synthesized by ball milling of Nb-B (1 : 2) mixture using planetary ball mill with balls of 5 mm, 9 mm or 16 mm diameter, and the effect of the ball sizes on the preparation of NbB2 was examined. When milled with balls of 5 mm, 9 mm and 16 mm diameters, the starting time of the NbB2 formation was 20 hrs, 10 hrs and 5 hrs, respectively, and the single phase of NbB2 was obtained in 50 hrs, 30 hrs and 20 hrs, respectively. The time required for the formation of the NbB2 single phase decreased with the increase in the ball size. The lattice parameters of the NbB2 obtained were a = 0.3112 nm, c = 0.3276 nm. The specific surface area of the NbB2 powder decreased with increase in the ball size. The average particle size of the NbB2 powder obtained by milling with the 5 mm diameter balls for 50 hrs was approximately 370 nm. The contaminant in NbB2 powder from the vial and balls decreased with decrease in the ball size.

Journal

Citations (1)*help

See more

References(12)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top