An Influence of a Binder System to the Rheological Behavior of the SS316L Metal Injection Molding (MIM) Feedstock

Abstract:

The influence of a binder system to the rheological behavior of a Metal Injection Molding (MIM) feedstock is presented in the paper. The binder systems used are: a) PEG & PMMA b) Palm stearin & LLDPE and, c) Tapioca starch & LLDPE. The viscosity and shear rate of the feedstocks were measured at various range of temperature and shear rate across the L/D = 10 capillary rheometer. The flow behavior index, n and activation energy, E of each feedstock were measured to show its significance as MIM feedstock. Generally, the result indicates all feedstock exhibits a shear thinning behavior and the binders are suitable as MIM binder. Additionally, the present paper has discovered that the binder system does not have much influence to the activation energy. In order to show the relevance of the rheological behavior to the actual injection molding performance, green parts has been injection molded and the result shows an agreement with the rheological behavior result.

• Periodical: Advanced Materials Research (Volumes 264-265)
• Pages: 554-558
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.264-265.554
• Online since: June 2011
• Authors: Khairur Rijal Jamaludin, Norhamidi Muhamad, Hooman Abolhasani, Hadi Murthadha, Mohd Nizam Ab. Rahman
• Keywords: Activation Energy, Binder System, Flow Behavior Index, Metal Injection Molding (MIM), Rheological Behavior

References

[1] P. Suri, , S.V. Atre, , R.M. German and J.P. Souza: Materials Science and Engineering Vol. A356 (2003), pp.337-344.

[2] B. Huang, S. Liang and X. Qu: Journal of Materials Processing Technology Vol. 137 (2003), pp.132-137.

[3] V.A. Krauss, E.N. Pires, A.N. Klein and M.C. Fredel: Materials Research Vol. 8 No. 2 (2005), pp.187-189.

[4] W.W. Yang, K.Y. Yang, and M.H. Hon: Materials Chemistry and Physics Vol. 78 (2002), pp.416-424.

[5] I. Agote, A. Odriozola, M. Gutierrez, A. Santamaria, J. Quintanilla, P. Coupelle, and J. Soares: Journal of the European Ceramic Society Vol. 21 (2001), pp.2843-2853.

DOI: 10.1016/s0955-2219(01)00210-2

[6] K.R. Jamaludin, N. Muhamad, S.Y.M. Amin, M.N.A. Rahman and Murtadhahadi: International Journal of Mechanical and Materials Engineering Vol. 3 No. 2 (2008), pp.108-114.

[7] N. Muhamad, K.R. Jamaludin, S.Y.M. Amin, M.N.A. Rahman and S. Abdullah: Jurnal Teknologi UTM, No. 48(A) (2008), pp.19-34.

[8] R.M. German, and A. Bose: Injection Molding of Metal and Ceramic (Metal Powder Industries Federation 1997).

[9] B. Hausnerova, T. Sedlacek, R. Slezak, and P. Saha: Rheological Acta Vol 45 (2006), pp.290-296.

[10] K.R. Jamaludin, N. Muhamad, M.N.A. Rahman, Murtadhahadi, S. Ahmad, M.H.I. Ibrahim and N.H.M. Nor: Advanced Materials Research Vols. 83-86 (2010), pp.945-952.

DOI: 10.4028/www.scientific.net/amr.83-86.945

[11] N.H. Mohamad Nor, N. Muhamad, M.H. Ismail, K.R. Jamaludin, S. Ahmad and M.H.I. Ibrahim: International Journal of Mechanical and Materials Engineering Vol. 4 No. 1 (2009), pp.70-75.