2015-Sustainable Industrial Processing Summit
SIPS 2015 Volume 8: Composite & Ceramic, Quasi-crystals and Nanomaterials
| Editors: | Kongoli F, Pech-Canul M, Kalemtas A, Werheit H |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2015 |
| Pages: | 300 pages |
| ISBN: | 978-1-987820-31-7 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Tungsten Carbide Nano Powder Obtained by Mechanical Alloying in High Energy Mill
Victor Ioan Stanciu1; Veronique Vitry1; Fabienne Delaunois1;1UNIVERSITE DE MONS, Mons, Belgium;
Type of Paper: Regular
Id Paper: 227
Topic: 8
Abstract:
Powder metallurgy is a leading area in materials science, the preferred route for the production of materials with specific properties, such as cutting tools and other wear resistant parts.
Among the powder manufacturing technologies, mechanosynthesis plays an important role because it allows to form alloys in solid phase from immiscible components.
The synthesis of tungsten carbide powder by direct carburizing of tungsten oxide in one step, using the mechanical alloying method, is possible but requires very tough conditions for milling installation. Tungsten carbide is generally produced by chemical processes and subsequently subjected to long grinding processes to obtain the desired granulometry.
In order to improve this grinding process, we subjected a commercial tungsten carbide powder to milling in a planetary mill Pulverisette 7 Premium line at rotational speeds of 300, 400, 500 and 600 rpm using balls of various sizes for maximum 10 hours. The resulting powder was analyzed by scanning electron microscopy and laser granulometry. After different periods of grinding, we observe a reduction in size of the tungsten carbide particles, at least 50% of the powder having a grain size smaller than 1 Aµm.
Keywords:
Alloys; Ceramic; Materials; Metal; Nanoparticles;References:
[1] G.E. Spriggs, A history of fine grained hardmetal. International Journal of Refractory Metals and Hard Materials, 13 (1995), 241–255.[2] P. Seegopaul, L.E. McCandlish, F.M. Shinneman, Production capability and powder processing methods for nanostructured WC-Co powder. International Journal of Refractory Metals and Hard Materials, 15 (1997) 133–138.
[3] ASM Committee, ASM Metals Handbook 9th Edition 1998, Ohio: ASM International. Available at: http://products.asminternational.org/hbk/do/section/content/V07/D00/A01/index.htm?highlight=false.
[4] Reddy, K.M. et al. Nanostructured tungsten carbides by thermochemical processing. Journal of Alloys and Compounds, 494(1-2), (2010), 404–409.
[5] Y. S. Kwon, V. M. Andreev, O. I. Lomovsky, B. B. Bokhonov, Synthesis of tungsten carbide nanoparticles encapsulated with graphite shell. Journal of Alloys and Compounds, 386 (2005), 115–118.
[6] K.M. Andersson, Aqueous Processing of WC-Co Powders, (Royal Institute of Technology, Stockholm, 2004.
[7] M. El-Eskandarany, Sherif Mahday, Amir A. Ahmed, H.A. Amer, Synthesis and characterizations of ball-milled nanocrystalline WC and nanocomposite WC-Co powders and subsequent consolidations. Journal of Alloys and Compounds, 312 (2000), 315–325.
[8] M.H. Enayati, G.R. Aryanpour, A. Ebnonnasir, Production of nanostructured WC-Co powder by ball milling. International Journal of Refractory Metals and Hard Materials, 27(1), (2009), 159–163.
[9] J. Ma, S.G. Zhu, Direct solid-state synthesis of tungsten carbide nanoparticles from mechanically activated tungsten oxide and graphite. International Journal of Refractory Metals and Hard Materials, 28 (2010) 623–627.
[10] S. Sharafi, S. Gomari, Effects of milling and subsequent consolidation treatment on the microstructural properties and hardness of the nanocrystalline chromium carbide powders. International Journal of Refractory Metals and Hard Materials, 30 (2012), pp.57–63.
[11] M. Xueming, et al., Structure and properties of bulk nano-structured WC–CO alloy by mechanical alloying. Journal of Alloys and Compounds, 264 (1998) pp.267–270.
[12] F.L.Zhang, C.Y Wang, M. Zhu, Nanostructured WC/Co composite powder prepared by high energy ball milling. Scripta Materialia, 49 (2003) 1123–1128.
[13] F.L. Zhang, M. Zhu, C.Y. Wang, Parameters optimization in the planetary ball milling of nanostructured tungsten carbide/cobalt powder. International Journal of Refractory Metals and Hard Materials, 26 (2008) 329–333.
[14] V.Bonache, et al., Fabrication of full density near-nanostructured cemented carbides by combination of VC/Cr3C2 addition and consolidation by SPS and HIP technologies. International Journal of Refractory Metals and Hard Materials, 29(2), (2011), 202–208.
[15] J.C. Kim, G.H. Ha, B.K. Kim, Synthesis of WC-Co Nanocomposite powders by Chemical vapor condensation and gas-phase carburization process. Journal of Metastable an Nanocrystalline Materials, 20-21 (2004), 237–241..
[16] S. Sharafi, S. Gomari, Effects of milling and subsequent consolidation treatment on the microstructural properties and hardness of the nanocrystalline chromium carbide powders, Int. Journal of Refractory Metals and Hard Materials, 30 (2012), 57–63.
[17] C. Suryanarayana, Mechanical alloying and milling. Progress in Materials Science, 46 (2001), pp.1–184.
18H. Meng, Z. Zhang, F. Zhao, T. Qiu, Preparation of WC nanoparticles by twice ball milling. International Journal of Refractory Metals and Hard Materials, 41(5), (2013), 191–197.