Feedstock Characterization of Elemental Nickel and Titanium Powders Mixture for Metal Injection Moulding Process

Abstract:

The success of metal injection moulding (MIM) process is significantly influenced by the homogeneity level of the powder-binder mixture (feedstock). This paper highlights some initial characterization of the feedstock containing elemental Ni and Ti powders mixture, (50.8 at.% Ni/ 49.2 at.% Ti) mixed with Palm stearin-based binder system. The feedstock was prepared using an internal mixer, HAAKE Rheomix at a temperature of 160°C for 2 hours. The feedstock was then characterized by Differential Scanning Calorimetry (DSC), Thermogravimetric (TGA), Scanning Electron Microscopy (SEM) and Capillary Rheometer. All the results obtained were analyzed and discussed for further injection moulding process.

• Periodical: Applied Mechanics and Materials (Volume 575)
• Pages: 78-82
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.575.78
• Online since: June 2014
• Authors: Rosliza Razali*, Zulaila Abdullah, Istikamah Subuki, Muhammad Hussain Ismail, Norhamidi Muhamad
• Keywords: Metal Injection Moulding, NiTi Alloy, Powder metallurgy, Rheology

References

[1] L. Petrini and F. Migliavacca, Biomedical Applications of Shape Memory Alloys, Journal of Metallurgy, vol. 2011, no. Figure 1, p.1–15, (2011).

DOI: 10.1155/2011/501483

[2] G. Chen, P. Cao, and N. Edmonds, Porous NiTi alloys produced by press-and-sinter from Ni/Ti and Ni/TiH2 mixtures, Materials Science and Engineering: A, vol. 582, p.117–125, Oct. (2013).

DOI: 10.1016/j.msea.2013.05.082

[3] S. Wisutmethangoon, N. Denmud, and L. Sikong, Characteristics and compressive properties of porous NiTi alloy synthesized by SHS technique, Materials Science and Engineering: A, vol. 515, no. 1–2, p.93–97, Jul. (2009).

DOI: 10.1016/j.msea.2009.02.055

[4] M. Bram, a. Ahmad-Khanlou, a. Heckmann, B. Fuchs, H. P. Buchkremer, and D. Stöver, Powder metallurgical fabrication processes for NiTi shape memory alloy parts, Materials Science and Engineering: A, vol. 337, no. 1–2, p.254–263, Nov. (2002).

DOI: 10.1016/s0921-5093(02)00028-x

[5] M. H. Ismail, R. Goodall, H. a. Davies, and I. Todd, Formation of microporous NiTi by transient liquid phase sintering of elemental powders, Materials Science and Engineering: C, vol. 32, no. 6, p.1480–1485, Aug. (2012).

DOI: 10.1016/j.msec.2012.04.028

[6] N. H. M. Nor, M. H. Ismail, N. A. A. Kasim, N. Muhamad, and M. A. Taib, Characterization and Rheological Studies on Ready-Made Feedstock of Stainless Steel 316L in Metal Injection Molding ( MIM ) Process, Applied Mechanics and Materials, vol. 466, p.709–714, (2014).

DOI: 10.4028/www.scientific.net/amm.465-466.709

[7] I. Subuki, Injection Moulding of 316L Stainless Steel Powder Using Palm Stearin Based Binder System, Universiti Teknologi Mara, (2010).

[8] A. German, R. M., Bose, Injection Moulding of Metal and Ceramics. (1997).

[1] G. Chen, P. Cao, and N. Edmonds, Porous NiTi alloys produced by press-and-sinter from Ni/Ti and Ni/TiH2 mixtures, Materials Science and Engineering: A, vol. 582, p.117–125, Oct. (2013).

DOI: 10.1016/j.msea.2013.05.082

[2] D. Cluff and S. F. Corbin, The influence of Ni powder size, compact composition and sintering profile on the shape memory transformation and tensile behaviour of NiTi, Intermetallics, vol. 18, no. 8, p.1480–1490, Aug. (2010).

DOI: 10.1016/j.intermet.2010.03.043

[3] S. Wisutmethangoon, N. Denmud, and L. Sikong, Characteristics and compressive properties of porous NiTi alloy synthesized by SHS technique, Materials Science and Engineering: A, vol. 515, no. 1–2, p.93–97, Jul. (2009).

DOI: 10.1016/j.msea.2009.02.055

[4] B. Y. Tay, C. W. Goh, M. S. Yong, A. M. Soutar, Q. Li, M. K. Ho, M. H. Myint, Y. W. Gu, and C. S. Lim, Self-propagating high-temperature synthesis of porous NiTi, SIMTech technical reports, vol. 7, no. 1, p.21–25, (2006).

DOI: 10.1016/j.jmatprotec.2007.09.037

[5] J. Mentz, J. Frenzel, M. F. -X. Wagner, K. Neuking, G. Eggeler, H. P. Buchkremer, and D. Stöver, Powder metallurgical processing of NiTi shape memory alloys with elevated transformation temperatures, Materials Science and Engineering: A, vol. 491, no. 1–2, p.270–278, Sep. (2008).

DOI: 10.1016/j.msea.2008.01.084

[6] H. Guoxin, Z. Lixiang, F. Yunliang, and L. Yanhong, Fabrication of high porous NiTi shape memory alloy by metal injection molding, Journal of Materials Processing Technology, vol. 206, no. 1–3, p.395–399, Sep. (2008).

DOI: 10.1016/j.jmatprotec.2007.12.044

[7] A. German, R. M., Bose, Injection Moulding of Metal and Ceramics. (1997).

[8] M. H. . Ibrahim, N. Muhamad, and A. . Sulong, Rheological Investigation of Water Atomised Stainless Steel, International Journal of Mechanical and Materials Engineering, vol. 4, no. 1, p.1–8, (2009).

[9] K.R. Jamaludin, N. Muhamad, S. Y. M. Amin, M. N. A. Rahman, and Murtadhahadi, Rheological Behavior of SS316L Gas atomized Powder in Bimodal Particle Size Distribution in A composite Binder System, International Journal of Mechanical and Materials Engineering, vol. 3, p.108–114, (2008).