Influence of Sintering Temperature on the Properties of in-Situ Carbide-Reinforced Hybrid Copper-Based Composite
Main Article Content
Abstract
The aim of this research is to investigate the influence of the sintering temperature on the properties of the in-situ carbide (Nb,Ti)C in a copper matrix synthesized via mechanical alloying and powder metallurgy from elemental powders of Cu, Nb, Ti and graphite. The mixture of starting powders with compositions corresponding to Cu-15vol.% (Nb, Ti)C was mechanical alloyed using a planetary ball mill for 20 hours. The as-milled powders then were uniaxial cold pressed at compaction pressure of 800 MPa and sintered in a vacuum sintering furnace for 1 hour at different temperatures from 700 to 1000oC. The obtained results revealed that sintering temperature was an important factor to produce a bulk in-situ Cu-(Nb, Ti)C composite. Higher sintering temperature led to an increase in density and electrical conductivity of the bulk composite with a decrease in microhardness as a result of higher rate of recrystallization and the elimination of dislocation at higher sintering temperature.
Keywords
Cu, Nb, Ti)C, mechanical alloying, sintering temperature
Article Details
References
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[3] M.T. Marques, A.M. Ferraria, J.B. Correia, A.M. Botelho do Reg, R. Vilar, Materials Chemistry and Physics 109 (2008) 174–180.
[4] Z. Hussain, R. Othman, D. L. Bui, U. Minoru, Journal of Alloys and Compounds 464 (2008) 185-189.
[5] H. Zuhailawati, T.L. Yong, Materials Science and Engineering A 505(2009) 27-30.
[6] E. Botcharova, M. Heilmaier, J. Freudenberger, G. Drew, D. Kudashow, U. Martin, L. Schultz, J. Alloys Compd. 351 (2003) 119-125.
[7] L.E. Toth, Transition Metal Carbides and Nitrides, Academic Press, New York (1971) 13.
[8] Q. Yuan, Y. Zheng, H. Yu, Journal of Refractory Metals & Hard Materials 27 (2009) 696-700.
[9] Zhu X., K. Zhao, B. Cheng, Q. Lin, X. Zhang, T. Chen, Y. Su, Materials Science and Engineering C 16 (2001) 103–105.
[10] V. Udhayabanu, K.R. Ravi, V. Vinod, B.S. Murty, Intermetallics 18 (2010) 353-358.
[11] D. Ravinder, Materials Letters 40 (1999) 198–203.
[12] D.A. Porter, K.E. Easterling, Phase Transformations in Metals and Alloys (1980), McGraw-Hill, 24.
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[15] K.V. Manukyan, S.L. Kharatyan, G. Blugan, P. Kocher, J. Kuebler, Journal of the European Ceramic Society (29) (2008) 2053-2060.