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Characterization of WC-VC-Co Cemented Carbides Using Scanning Electron Microscopy (SEM) and Energy Dispersive X-Ray Spectroscopy (EDS)

Published online by Cambridge University Press:  02 July 2020

F. Arenas ,
I. B. de Arenas ,
J. Ochoa  and
S. A. - Cho
F. Arenas
Affiliation:
Department of Materials Technology. Universitary Institute of Technology - R.C, P.O. Box 40347. Caracas 1040-A., Venezuela
I. B. de Arenas
Affiliation:
Department of Materials Technology. Universitary Institute of Technology - R.C, P.O. Box 40347. Caracas 1040-A., Venezuela
J. Ochoa
Affiliation:
Department of Materials Science, Venezuelan Institute of Scientific Research (IVIC), P.O. Box 21827, Caracas 1020-A., Venezuela.
S. A. - Cho
Affiliation:
Department of Materials Science, Venezuelan Institute of Scientific Research (IVIC), P.O. Box 21827, Caracas 1020-A., Venezuela.
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Extract

The two important constituents of metallic tool alloys are transition metal carbides and metals of the iron group, Fe, Ni, Co. Combining them, based on WC, it is obtained a hard and tough cutting tool material. Many attempts have been made to develop alternative cemented carbide systems by substituting a portion of WC by other hard phases. In this investigation, microstructure and phases composition of 90 mass% [ (1-y) WC - y VC ] - 10 mass% Co with y = 0, 0.2, 0.4, 0.6 and 1.0 sintered cemented carbides were studied by Backscattering electron (BSE) compositional images, elemental dot maps and X - ray microanalysis. These techniques have allowed to determine the different phases present, their morphology and composition.

Cylindrical samples of 10 mm. in diameter and height were manufactured by vacuum sintering at 1400°C of uniaxially pressed compacts at 350 MPa. Liquid phase sintering is the predominant consolidation mechanism present in this system.

Type
Phase Transformations in Metals and Alloys
Information
Microscopy and Microanalysis , Volume 3 , Issue S2: Proceedings: Microscopy & Microanalysis '97, Microscopy Society of America 55th Annual Meeting, Microbeam Analysis Society 31st Annual Meeting, Histochemical Society 48th Annual Meeting, Cleveland, Ohio, August 10-14, 1997 , August 1997 , pp. 717 - 718
Copyright
Copyright © Microscopy Society of America 1997

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References

1.Bhaumik, S. K, Upadhyaya, G. S. & Vaidya, M. L., “Microstructure and mechanical properties of WC-TiN-Co and WC-TiN-Mo2C-Co(Ni) Cemented Carbides”, Caramics International, 18 (1992) 327–336.10.1016/0272-8842(92)90082-OCrossRefGoogle Scholar
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