Processing of Porous Copper by Powder Metallurgy Route with Different Types of Space Holder Materials (SHMs)

Abstract:

Different types of space holder material (SHM) could be used to produce porous copper by powder metallurgy (PM) route. In this present work, three types of selected SHMs, namely polymethyl methacrylate (PMMA), natrium chloride (NaCl) and potassium carbonate (K₂CO₃) were used in the processing of porous copper. Prior mixing with copper powder, the SHM was characterized by Thermal Gravimetric Analysis (TGA) in order to investigate the decomposition temperature. After the mixture of SHM and copper powder was manually pressed to form a cylindrical shape, sintering process was carried out in a high vacuum furnace, followed by dissolution process. Phase analysis and morphological analyses were carried out by X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM), respectively. Results showed that owing to greater decomposition temperature for K₂CO₃ than that of PMMA and NaCl, the porous structure developed exhibited a promising morphology, replicating the shape of the K₂CO₃ particles employed, thus promoting better engineered porous structure to suit the desired applications in thermal management applications (TMAs). Besides, the samples also showed better shape rigidity throughout the processing stage.

• Periodical: Advanced Materials Research (Volume 1113)
• Pages: 110-115
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1113.110
• Online since: July 2015
• Authors: Rasid Siti Athirah*, Mohamad Mazlan, Nordin Amalina, Aidah Jumahat, Muhammad Hussain Ismail
• Keywords: Porous Copper, Powder metallurgy, Space Holder Material

References

[1] M.F. Ashby , A.G. Evans, N.A. Fleck, L.J. Gibson, J.W. Hutchinson, H.N.G. Wadley, Metal Foams: A Design Guide, Butterworth- Heinemann, Oxford, UK, (2000).

DOI: 10.1016/b978-075067219-1/50001-5

[2] C.Y. Zhoa, Review on thermal transport in high porosity cellular metal foams with open cells, Int. J. Heat Mass Tran., Vol 55(13-14), pp.3618-3632, (2012).

DOI: 10.1016/j.ijheatmasstransfer.2012.03.017

[3] H.A. Kuchek, Method of making porous metallic article,. US Patent 3, 236, 706, (1996).

[4] R. Surace, L.A.C. De Filippis, A.D. Ludovico, G. Boghetich. Influence of processing parameters on aluminium foam produced by space holder technique, Mater. Design, Vol 30(6), pp.1878-1885. (2009).

DOI: 10.1016/j.matdes.2008.09.027

[5] Y. Y. Zhoa, T. Fung , L. P. Zhang, F. L. Zhang. Lost carbonate sintering process for manufacturing metal foams,. Scripta Mater., Vol 52(4), pp.295-298, (2005).

DOI: 10.1016/j.scriptamat.2004.10.012

[6] A. Manonukul, N. Muenya, F. Leaux, S. Amaranan. "Effects of replacing metal powder with powder space holder on metal foam produced by metal Injection Moulding, J. Mater. Process. Tech. Vol 210 (3), pp.529-535, (2010).

DOI: 10.1016/j.jmatprotec.2009.10.016

[7] Q. Z. Wang, C. X. Cui, S. J. Liu, L. C. Zhao, Open Celled porous Cu prepared by replication of NaCl space holders,. Mat. Sci. Eng. A, Vol 527(4-5), pp.1275-1278, (2010).

DOI: 10.1016/j.msea.2009.10.062

[8] H. Degischer and B. Kriszt (eds), Handbook of Cellular Metals (Wiley-VCH, Berlin, 2002) pp.222-224.

[9] B. Wang & E. Zhang, On the Compressive behavior of sintered porous coppers with low to medium porosities- Part II: Preparation and Microstructure,. Int. J. Mech. Sci, Vol 50(3), pp.550-558, (2008).

DOI: 10.1016/j.ijmecsci.2007.08.003

[10] G. J. Davies and S. Zhen, Review Metallic Foams: their production, properties and applications, J. Mater. Sci, Vol 18, pp.1899-1911, (1983).

DOI: 10.1007/bf00554981