Fabrication and Properties of WC-Al₂O₃ Cemented Carbide Reinforced by Single-Walled Carbon Nanotubes

Abstract:

WCAl₂O₃-Carbon nanotubes (CNTs) composites were prepared by hot pressing process. Effects of trace amount of CNTs additives on the microstructure and mechanical properties of the WCAl₂O₃ were investigated. The microstructure, phase identification and hardness of composites were analyzed by using optical microscopy, X-ray diffraction (XRD) and Vickers indenter. The experimental results indicate that both the WCAl₂O₃ doped with 0.1wt% CNTs and 0.5wt%CNTs possessed the refined microstructure and enhanced mechanical properties compared with that of the WCAl₂O₃ doped with 1wt% and 1.5wt% CNTs. When CNTs were added to the WC-Al₂O₃ composites, the decarburization suppression could be achieved in the WC-Al₂O₃ powders system.

• Periodical: Applied Mechanics and Materials (Volume 404)
• Pages: 91-94
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.404.91
• Online since: September 2013
• Authors: Tao Bai
• Keywords: Carbon Nanotube (CN), Composite, Mechanical Property

References

[1] F.A. Deorsola, D. Vallauri, G.A. Ortigoza Villalba, B.D. Benedetti: Int. J. Refract. Met. Hard Mater Vol. 28 (2010), p.254.

[2] H.C. Kim, I.J. Shon, J.E. Garay, Z.A. Munir: Int. J. Refract. Met. Hard Mater Vol. 22 (2004), p.257.

[3] H.C. Kim, I.J. Shon, J.K. Yoon, J.M. Doh: Int. J. Refract. Met. Hard Mater Vol. 25 (2007), p.46.

[4] H.X. Qu, S.G. Zhu, Q. Li, C.X. Ouyang: Ceram. Int Vol. 38 (2012), p.1371.

[5] S. Iijima: Nature Vol. 354 (1991), p.56.

[6] H. Dai: Surface Science Vol. 500 (2002), p.218.

[7] K. -T. Lau, D. Hui: Composites B Vol. 33 (2002), p.263.

[8] E.T. Thostenson, Z. Ren, T. -W. Chou: Compos. Sci. Technol Vol. 61(2001), p.1899.

[9] J. Ning, J. Zhang, Y. Pan, J. Guo: Mater. Sci. Eng A Vol. 357 (2003), p.392.