Investigation of HIP-sintering of nanocrystalline WC/Co powder

L. Bartha, P. Atató, A. Tóth, R. Porat, S. Berger, A. Rosen

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

The aim of this work was to investigate the mechanism of densification of hard metal at temperatures about the liquid-solid boundary. Nanoparticle sized WC/15%Co powders were sintered in vacuum or argon without or with HIP treatment at temperatures 1270 °C and 1330 °C. Density, hardness, fracture toughness, coercive force and specific magnetic saturation were measured and the structure was studied by scanning electron microscopy. It was found that HIPing may significantly decrease the porosity remaining after low pressure sintering. In spite of significant differences in temperature and atmosphere of sintering similar mechanical and magnetic properties can be obtained. The temperature dependence of these properties was also studied by HIP-sintering the samples in 10 MPa argon in the temperature range 800-1330 °C. It was found that under 1100 °C the rate of densification is too slow for practical application.

Original languageEnglish
Pages (from-to)23-26
Number of pages4
JournalJournal of Advanced Materials
Volume32
Issue number3
Publication statusPublished - Jul 2000

Fingerprint

Hot isostatic pressing
Powders
Sintering
Argon
Densification
Temperature
Saturation magnetization
Coercive force
Fracture toughness
Magnetic properties
Porosity
Hardness
Vacuum
Nanoparticles
Mechanical properties
Scanning electron microscopy
Liquids
Metals

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Bartha, L., Atató, P., Tóth, A., Porat, R., Berger, S., & Rosen, A. (2000). Investigation of HIP-sintering of nanocrystalline WC/Co powder. Journal of Advanced Materials, 32(3), 23-26.

Investigation of HIP-sintering of nanocrystalline WC/Co powder. / Bartha, L.; Atató, P.; Tóth, A.; Porat, R.; Berger, S.; Rosen, A.

In: Journal of Advanced Materials, Vol. 32, No. 3, 07.2000, p. 23-26.

Research output: Contribution to journalArticle

Bartha, L, Atató, P, Tóth, A, Porat, R, Berger, S & Rosen, A 2000, 'Investigation of HIP-sintering of nanocrystalline WC/Co powder', Journal of Advanced Materials, vol. 32, no. 3, pp. 23-26.
Bartha L, Atató P, Tóth A, Porat R, Berger S, Rosen A. Investigation of HIP-sintering of nanocrystalline WC/Co powder. Journal of Advanced Materials. 2000 Jul;32(3):23-26.
Bartha, L. ; Atató, P. ; Tóth, A. ; Porat, R. ; Berger, S. ; Rosen, A. / Investigation of HIP-sintering of nanocrystalline WC/Co powder. In: Journal of Advanced Materials. 2000 ; Vol. 32, No. 3. pp. 23-26.
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