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The sintering behavior of nanosized tungsten powder prepared by a plasma process
- Source :
-
International Journal of Refractory Metals & Hard Materials . Jul2009, Vol. 27 Issue 4, p701-704. 4p. - Publication Year :
- 2009
-
Abstract
- Abstract: The sintering behavior of nanosized tungsten powder (25nm average size) synthesized by a thermal plasma process, in which ammonium paratungstate (APT) was reduced by hydrogen was investigated, compared with submicron W powder (0.5μm average size) and nanosized W powder (23nm average size) produced from the latter by high energy milling. The hardness of the compact of the plasma-synthesized powder (315 VHN) sintered at 1400°C was higher than that of submicron-sized powder (193 VHN) and was similar to that of the milled powder (309 VHN). The plasma-synthesized powder, however, yielded a compact with much lower tendency to form cracks than the milled powder. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 02634368
- Volume :
- 27
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- International Journal of Refractory Metals & Hard Materials
- Publication Type :
- Academic Journal
- Accession number :
- 37576995
- Full Text :
- https://doi.org/10.1016/j.ijrmhm.2008.11.004