Compaction of Ultra-Fine WC Powder by High-Speed Centrifugal Compaction Process

Hiroyuki Y. Suzuki; Yuichi Kadono; Hidenori Kuroki

doi:10.4028/www.scientific.net/MSF.534-536.249

Paper Titles

Thermal Stability of Amorphous Ti- Cu- Ni- Sn Prepared by Mechanical Alloying
p.233

Analysis of Failure Mechanisms during Powder Compaction
p.237

Anisotropy of Thermal Expansion Coefficient of Pressed Graphite Foam Measured over the Temperature Interval 20-500°C
p.241

Carbon Nanotube Reinforced Metal Matrix Nanocomposites via Equal Channel Angular Pressing
p.245

Compaction of Ultra-Fine WC Powder by High-Speed Centrifugal Compaction Process
p.249

Densification and Conolidation of Powders by Equal Channel Angular Pressing
p.253

Densification Behavior of Iron Powder during Cold Stepped Compaction
p.257

Densification Mechanism of Warm Compaction for Iron-Based Powder Materials
p.261

Development of High Strength Sintered Steel by High Pressure Warm Compaction Using Die Wall Lubrication
p.265

HomeMaterials Science ForumMaterials Science Forum Vols. 534-536Compaction of Ultra-Fine WC Powder by High-Speed...

Compaction of Ultra-Fine WC Powder by High-Speed Centrifugal Compaction Process

Abstract:

High-Speed Centrifugal Compaction Process (HCP) is one of slip-using compacting method originally developed for processing of oxide ceramics. In this study, we are going to apply the HCP to ultra-fine (0.1 micron) WC powder. Organic liquid of heptane was chosen as dispersing media to avoid possible oxidation of WC. For slip preparation, addition of sorbitan-monostearate (SMS) dramatically improved state of dispersion. The mixing apparatus also was in consideration. The slips mixed by conventional ball mill or turbula mill were scarcely densified by the HCP. Only the slips mixed by high energy planetary ball mill were packed up to 55% by the HCP, and sintered to almost full density at 1673 K without any sintering aids. This sintered compact marked Vickers hardness of Hv 2750 at maximum.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Materials Science Forum (Volumes 534-536)

Pages:

249-252

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.534-536.249

Citation:

Cite this paper

Online since:

January 2007

Authors:

Hiroyuki Y. Suzuki, Yuichi Kadono, Hidenori Kuroki

Keywords:

Binder-Less WC, Dispersion, Sintereing Performance, Slip

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] H.Y. Suzuki and H. Kuroki: Metal and Mater. Int., Vol. 10 (2004), pp.185-191.

Google Scholar

[2] H. Y. Suzuki, K. Shinozaki, S. Tashima, and H. Kuroki: J. Jpn. Soc. Powder Powder Metallurgy, Vol. 51 (2004), pp.423-434 [in Japanese].

Google Scholar

[3] H. Y. Suzuki and H. Kuroki: Science of Sintering Current Problems and New Trends, Edited by M. Ristic, Serbian Academy of Science and Arts, Beograd, (2003) pp.29-36.

Google Scholar

[4] H. Y. Suzuki, K. Shinozaki, and H. Kuroki: Sintering Science and Technology, edited by R. M. German, G. L. Messing, and R. G. Cornwall, Penn-State Univ., (2000) pp.207-212.

Google Scholar

[5] Y. Hirata, S. Nakagama, and Y. Ishihara: Nhippon Seramikkusu Gakujutu Ronbunshi, Vol. 98 (1990) 316-321.

Google Scholar

[6] T. Kimura, S. Sakaguchi , adn M. Nakamura: J. Soc. Powder Tehc. Jpn., Vol. 33 (1996), pp.371-378 [in Japanese].

Google Scholar

[7] P. Rautala and J. T. Norton: J. Metals, Vol. 4 (1952) p.1054.

Google Scholar