Phase Analysis of Mechanically Alloyed In Situ Copper-Tungsten Carbide Composite

Abstract:

An in-situ composite of copper and tungsten carbide powder was prepared by mechanical alloying of elemental powder. The sample has been milled in a high-energy ball mill for 20 h at different milling speed i.e. 100, 200, 300 and 400 rpm in an argon atmosphere. Investigations in terms of microstructural features and phase constitution of in-situ composites powder were performed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). At higher milling speed, W2C is found to be precipitated with a small amount of WC was formed. Crystallite size of copper is reducing while internal strain is increasing with increasing milling speed.

• Periodical: Advanced Materials Research (Volume 173)
• Pages: 67-71
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.173.67
• Online since: December 2010
• Authors: Zuhailawati Hussain, Mahani Yusoff, Radzali Othman
• Keywords: Carbide Formation, Copper Matrix Composite, In Situ Processing, Mechanical Alloying (MA), Microstructure

References

[1] S.C. Tjong, Z.Y. Ma: Mater. Sci. Eng. Reports Vol. 29 (2000), p.49.

[2] Y.V. Baikalova, O.I. Lomovsky: J. Alloys Compd. Vol. 297 (2000), p.87.

[3] Z.R. Hesabi, S. Kamrani, A. Simchi, S.M.S. Reihani: Powder Metal. Vol. 52 (2009), p.151.

[4] F.A. da Costa, A.G.P. da Silva, U. Umbelino Gomes: Powder Technol. Vol. 134 (2003), p.123.

[5] D. Gupta, L. Seigle: Metall. Mater. Trans. A Vol. 6 (1975), p. (1939).

[6] S. Bolokang, C. Banganayi, M. Phasha: Int. J. Refract. Met. Hard Mater. Vol. 28 (2010), p.211.