Abstract
The B4C/Cu composites were prepared by powder metallurgy. Scanning electron microscopy, transmission electron microscopy, hardness tester, conductivity meter, and other analytical tests were used to study the effects of alloying elements and rare-earth modification processes on the microstructure and properties of composites. The results showed that the B4C/Cu composites prepared by powder metallurgy were densely packed, and the Y2O3 modified layer was uniformly coated on the surface of B4C particles. The modified B4C particles had a good interface with Cu and no interfacial reaction occurred. The addition of low melting point alloying element Bi could improve the hardness and electrical conductivity of B4C/Cu composites, but had little effect on the thermal conductivity. Surface modification of B4C with rare-earth salt could effectively increase the bonding ability between B4C particles and Cu, and endowed B4C/Cu composite materials with excellent physical and mechanical properties. For the composite with 2 wt% B4C particles, 2 wt% Bi particles, and 96 wt% copper powder, B4C/Cu composites had good mechanical and physical properties, of which the hardness was 179 HB; the density was 99.6%; the electrical conductivity was 66 %IACS; and the thermal conductivity could reach 262 W/m °C. These properties meet the requirements of electrical contact materials.
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References
H.-R. Zhao, W. Luo, Y.-Z. Xie et al., Study advance of contact material in 2015. Electr. Eng. Mater. 1, 24–28 (2016)
R. Jamaati, M.R. Toroghinejad, Application of ARB process for manufacturing high-strength, finely dispersed and highly uniform Cu/Al2O3 composite. Mater. Sci. Eng. A 527(27), 7430–7435 (2010)
Y. Jiang, M.-G. Yang, Z.-C. Yang et al., Research status of copper-based electrical contact materials for medium and high voltage apparatus. Electr. Eng. Mater. 4, 27–30, 35 (2013)
S.G. Savio, K. Ramanjaneyulu, V. Madhu, T. Balakrishna Bhat, An experimental study on ballistic performance of boron carbide tiles. Int. J. Impact Eng. 38, 535–541 (2011)
K. Rajkumar, K. Kundu, S. Aravindan et al., Accelerated wear testing for evaluating the life characteristics of copper-graphite tribological composite. Mater. Des. 32, 3029–3035 (2011)
J. Zhang, L. He, Y. Zhou, Highly conductive and strengthened copper matrix composite reinforced by Zr2Al3C4 particulates. Scripta Mater. 60, 976–979 (2009)
X. Tang, Hot Deformation Behavior and Hot Extrusion Process of ZnSnO3/Cu Electrical Contact Materials (Harbin Institute of Technology, 2015)
Z.Y. Xiao, M.Y. Ke, L. Fang et al., Die wall lubricated warm compacting and sintering behaviors of pre-mixed Fe–Ni–Cu–Mo–C powders. J. Mater. Process. Technol. 209, 4527–4530 (2009)
G.-L. Li, X.-C. Jiang, M. Wen et al., Studies of B4C particles reinforced copper matrix composite. J. Mater. Eng. 8, 32–35 (2001)
J.-P. Li, S.-H. Meng, J.-C. Han, Structure and flaws of CuCr alloys by explosive compaction. J. Harbin Inst. Technol. 12(2), 135–138 (2005)
S.J. Sun, S. Sakai, H.G. Suzuki, TEM observation of Cr fibers in Cu–15Cr–0.5Fe in situ composites. Mater. Trans. 41(5), 613–616 (2000)
Z. Mu, H.-R. Geng, M.-M. Li et al., Effects of Y2O3 on the property of copper based contact materials. Compos. B 52, 51–55 (2013)
C.J. Tu, D. Chen, Z.H. Chen, Improving the tribological behavior of graphite/Cu matrix self-lubricating composite contact strip by electroplating Zn on graphite. Tribol. Lett. 31, 91–98 (2008)
Y. Li, M. Song, Y. Zhang et al., Influence of the ball mill process on titanium alloy powder particle size. Chem. Eng. 06, 13–15, 53 (2017)
Y. Li, M. Song, Q. Yu, X. Zhang, Improvement of anti-hydrolytic property of AlN powder modified by the rare-earth salts. Mater. Sci. Forum 816, 9–14 (2015)
M.K. Habibi, A.S. Hamouda, M. Gupta, Hybridizing boron carbide particles with aluminum to enhance the mechanical response of magnesium based nano-composites. J. Alloy. Compd. 550, 83–93 (2013)
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Li, Y., Song, M., Zhang, Y., Li, Y., Zhang, X. (2019). Microstructure and Properties of Rare-Earth B4C–Copper Composites. In: Han, Y. (eds) Physics and Engineering of Metallic Materials. CMC 2018. Springer Proceedings in Physics, vol 217. Springer, Singapore. https://doi.org/10.1007/978-981-13-5944-6_28
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DOI: https://doi.org/10.1007/978-981-13-5944-6_28
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