Share Email Print

Proceedings Paper

Spark plasma sintering of wire exploded tungsten nano-powder
Author(s): C. Shearwood; H. B. Ng
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Mechanical and thermodynamic measurements are reported for specimens spark plasma sintered from tungsten nano-powder. A maximum Vickers hardness of 3.31±0.03 GPa, at a relative density of 0.98 was achieved at sintering temperature of 1,800°C and above. This corresponds to the value of hardness for bulk tungsten. Grain size analysis indicated a grain growth activation energy of 160±10% KJ/mol. Sintering temperatures were found to be as much as 270°C lower than previously reported. During the Spark Plasma Sintering (SPS), a reduction in the amount of tungsten oxide was observed, especially at temperatures above 1,500°C. A number of mechanisms are thought to be responsible including the SPS induced decomposition of the oxide into metallic tungsten.

Paper Details

Date Published: 21 December 2007
PDF: 10 pages
Proc. SPIE 6798, Microelectronics: Design, Technology, and Packaging III, 67981B (21 December 2007); doi: 10.1117/12.759375
Show Author Affiliations
C. Shearwood, School of Mechanical and Aerospace Engineering (Singapore)
H. B. Ng, School of Mechanical and Aerospace Engineering (Singapore)

Published in SPIE Proceedings Vol. 6798:
Microelectronics: Design, Technology, and Packaging III
Alex J. Hariz; Vijay K. Varadan, Editor(s)

© SPIE. Terms of Use
Back to Top