Thermal Stability and Properties of Cu-TiB2 Nanocomposites Prepared by Combustion Synthesis and Spark-Plasma Sintering


Article Preview

In the present work, Cu-TiB2 nanocomposite powders were synthesized by combining high-energy ball-milling of Cu-Ti-B mixtures and subsequent self-propagating high temperature synthesis (SHS). Cu-40wt.%TiB2 powders were produced by SHS reaction and ball-milled. The milled SHS powder was mixed with Cu powders by ball milling to produce Cu-2.5wt.%TiB2 composites. TiB2 particles less than 250nm were formed in the copper matrix after SHS-reaction. The releative density, electrical conductivity and hardness of specimens sintered at 650-750°C were nearly 98%, 83%IACS and 71HRB, respectively. After heat treatment at 850 to 950°C for 2 hours under Ar atmosphere, hardness was descedned by 15%. Our Cu-TiB2 composite showed good thermal stability at eleveated temperature.



Materials Science Forum (Volumes 534-536)

Edited by:

Duk Yong Yoon, Suk-Joong L. Kang, Kwang Yong Eun and Yong-Seog Kim




D. H. Kwon et al., "Thermal Stability and Properties of Cu-TiB2 Nanocomposites Prepared by Combustion Synthesis and Spark-Plasma Sintering", Materials Science Forum, Vols. 534-536, pp. 1517-1520, 2007

Online since:

January 2007




[1] M.A. Morris and D.G. Morris, Acta Metall., Vol. 35 (1987), 2511.

[2] D.G. Morris and M.A. Morris, Mater. Sci. Eng. A , Vol. 104 (1988), 201.

[3] J.B. Correia, H.A. Davies and C.M. Sellars, Acta Mater., Vol. 45 (1997), 177.

[4] A. Upadhyaya and G.S. Upadhyaya, Mater. Design, Vol. 16 (1995), 41.

[5] S.E. Broyles, K.R. Anderson, J.R. Groza and J.C. Gibeling, Metall. Mater. Trans. A., Vol. 27 (1996), 1217.

[6] Y.Z. Wan, Y.L. Wang, G.X. Cheng, H.M. Tao and Y. Cao, Powder Metall., Vol. 41 (1998), 59.

[7] S.Y. Chang and S.J. Lin, Scripta Mater., Vol. 35 (1996), 225.

[8] P. Yih and D.D.L. Chung, J. Mater. Sci., Vol. 31 (1996), 399.

[9] J. Pelleg, M. Ruhr and M. Ganor, Mater. Sci. Eng. A, Vol. 212 (1996), 139.

[10] C. Sauer, T. Weissgaerber, W. Puesche, G. Dehm, J. Mayer and B. Kieback, Int. J. Powder Metall., Vol. 33 (1997), 45.

[11] C. Sauer, T. Weissgaerber, G. Dehm, J. Mayer, W. Puesche and B. Kieback, Z. Metallkd., Vol. 89 (1998), 119.

[12] C. Biselli, D.G. Morris and N. Randall, Scripta Metall. Mater., Vol. 30 (1994), 1327.

[13] G.V. Samsonov and B.A. KovenskayaIn: V.I. Matkovich Editor, Boron and Refractory Borides Springer-Verlag, New York, (1977), 19.

[14] Z.A. Munir, Ceram Bull, Vol. 67 (1988), 342.

[15] M. Tokita, J. Soc. Powd. Tech. Japan, Vol. 30(11) (1993), 790.

[16] J. R. Groza, A. Zavalingos, Rev. Adv. Mater. Sci. 5 (2000), 24.