Fabrication of tungsten-based composites by solid binder mixing and sintering

J. Y. Suh, S. E. Shin, D. H. Bae

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A new solid binder mixing technique is investigated for the fabrication of net-shaped tungsten-based composite in this paper. Sub-micron tungsten-based composite and paraffin wax (PW) powders are mechanically milled at room temperature. The composite powders homogeneously encompass the PW powders, reducing the PW volume fraction to 0.2 for the production of a sound tube-type compact under an ambient condition with a pressure of 200. MPa. The dimensions of the compact after the thermal debinding process are rarely changed. Further advantages of the technique are observed for the sintered sample. A volumetric decrease of the composite corresponds to the initial PW binder volume fraction, and dimensional shrinkages are equivalent in all directions. The net-shaped composite shows a reasonable mechanical property, as well as that of the simple-shaped composite without the PW. Therefore, the process of mechanical binder dispersion in the tungsten-based composite powder, suggested in this study, is very effective for net-shaped composite production.

Original languageEnglish
Pages (from-to)401-405
Number of pages5
JournalPowder Technology
Volume283
DOIs
Publication statusPublished - 2015 Oct 1

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Tungsten
Binders
Paraffin waxes
Sintering
Fabrication
Composite materials
Powders
Volume fraction
Acoustic waves
Mechanical properties

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

Cite this

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abstract = "A new solid binder mixing technique is investigated for the fabrication of net-shaped tungsten-based composite in this paper. Sub-micron tungsten-based composite and paraffin wax (PW) powders are mechanically milled at room temperature. The composite powders homogeneously encompass the PW powders, reducing the PW volume fraction to 0.2 for the production of a sound tube-type compact under an ambient condition with a pressure of 200. MPa. The dimensions of the compact after the thermal debinding process are rarely changed. Further advantages of the technique are observed for the sintered sample. A volumetric decrease of the composite corresponds to the initial PW binder volume fraction, and dimensional shrinkages are equivalent in all directions. The net-shaped composite shows a reasonable mechanical property, as well as that of the simple-shaped composite without the PW. Therefore, the process of mechanical binder dispersion in the tungsten-based composite powder, suggested in this study, is very effective for net-shaped composite production.",
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Fabrication of tungsten-based composites by solid binder mixing and sintering. / Suh, J. Y.; Shin, S. E.; Bae, D. H.

In: Powder Technology, Vol. 283, 01.10.2015, p. 401-405.

Research output: Contribution to journalArticle

TY - JOUR

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AU - Suh, J. Y.

AU - Shin, S. E.

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N2 - A new solid binder mixing technique is investigated for the fabrication of net-shaped tungsten-based composite in this paper. Sub-micron tungsten-based composite and paraffin wax (PW) powders are mechanically milled at room temperature. The composite powders homogeneously encompass the PW powders, reducing the PW volume fraction to 0.2 for the production of a sound tube-type compact under an ambient condition with a pressure of 200. MPa. The dimensions of the compact after the thermal debinding process are rarely changed. Further advantages of the technique are observed for the sintered sample. A volumetric decrease of the composite corresponds to the initial PW binder volume fraction, and dimensional shrinkages are equivalent in all directions. The net-shaped composite shows a reasonable mechanical property, as well as that of the simple-shaped composite without the PW. Therefore, the process of mechanical binder dispersion in the tungsten-based composite powder, suggested in this study, is very effective for net-shaped composite production.

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