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Fabrication of iron-nickel alloy microcomponents by centrifuge-assisted micromolding


Iron-nickel alloys exhibit lots of attractive properties, such as magnetic and conductivity properties, as well as excellent corrosion resistance. These properties make them suitable for making microcomponents. This paper presents the fabrication of iron-nickel alloy microcomponents (microchannel, microwell, micromixer, and microgear) from an ethanol-based composite slurry by centrifuge-assisted micromolding. Polydimethylsiloxane (PDMS) molds were replicated from microstructured silicon masters. A stable ethanol-based iron-nickel composite slurry with a high solid content of 85 wt% was prepared and filled into the PDMS molds by the aid of centrifugation. After drying, green microcomponents were demolded and followed by sintering in hydrogen atmosphere. Sintering profile was established by TGA. The green and sintered microcomponents had good shape retention and were free of cracks. The highest density of the microcomponents (97.3 RD%) was achieved at 1070 °C; the corresponding microhardness and Young’s modulus were 167.8 HV and 175.4 GPa, respectively. The linear shrinkage increased with sintering temperature and the maximum value was about 12.5 %.

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  1. 1.

    Lyshevski SE (2013) MEMS and NEMS: systems, devices, and structures. CRC Press, Boca Raton

  2. 2.

    Yellen BB, Friedman G (2004) Programmable assembly of colloidal particles using magnetic microwell templates. Langmuir 20:2553–2559

  3. 3.

    Walt DR (2014) Protein measurements in microwells. Lab Chip 14:3195–3200

  4. 4.

    Meng JH, Loh NH, Fu G, Tor SB, Tay BI (2010) Replication and characterization of 316L stainless steel micromixer by micro powder injection molding. J Alloys Compd 496:293–299

  5. 5.

    Shan DB, Xu J, Wang CJ, Guo B (2009) Hybrid forging processes of micro-double gear using micro-forming technology. Int J Adv Manuf Technol 44:238–243

  6. 6.

    Elisa V, Ciro AR, Alex E, Joaquim C (2010) An experimental analysis of process parameters to manufacture metallic micro-channels by micro-milling. Int J Adv Manuf Technol 51:945–955

  7. 7.

    Maity KP, Singh RK (2012) An optimisation of micro-EDM operation for fabrication of micro-hole. Int J Adv Manuf Technol 61:1221–1229

  8. 8.

    Jain VK, Kalia S, Sidpara A, Kulkarni VN (2012) Fabrication of micro-features and micro-tools using electrochemical micromachining. Int J Adv Manuf Technol 61:1175–1183

  9. 9.

    Chao YP, Qi LH, Xiao Y, Luo J, Zhou JM (2012) Manufacturing of micro thin-walled metal parts by micro-droplet deposition. J Mater Process Technol 212:484–491

  10. 10.

    Piotter V, Honza E, Klein A, Mueller T, Plewa K, Prokop J (2014) Replication processes for metal and ceramic micro parts. Microsyst Technol 20:2011–2016

  11. 11.

    Schneider J, Iwanek H, Zum Gahr KH (2005) Wear behaviour of mould inserts used in micro powder injection moulding of ceramics and metals. Wear 259:1290–1298

  12. 12.

    Guo YH, Liu G, Xiong Y, Tian YC (2007) Study of the demolding process-implications for thermal stress, adhesion and friction control. J Micromech Microeng 17:9–19

  13. 13.

    Piotter V, Bauer W, Knitter R, Mueller M, Mueller T, Plewa K (2011) Powder injection moulding of metallic and ceramic micro parts. Microsyst Technol 17:251–263

  14. 14.

    Zhang D, Su B, Button TW (2007) Improvements in the structural integrity of green ceramic microcomponents by a modified soft molding process. J Eur Ceram Soc 27:645–650

  15. 15.

    Imbaby MF, Jiang K, Chang I (2008) Fabrication of 316-L stainless steel microparts by softlithography and powder metallurgy. Mater Lett 62:4213–4216

  16. 16.

    Sahli M, Gelin JC (2013) Development of a feedstock formulation based on polypropylene for micro-powder soft embossing process of 316L stainless steel micro-channel part. Int J Adv Manuf Technol 69:2139–2148

  17. 17.

    Su B, Zhang ZZ, Meng JH (2014) Centrifuge-assisted micromolding of ceramic microparts. Ceram Int 40:13735–13739

  18. 18.

    Pavithra GP, Hegde AC (2012) Magnetic property and corrosion resistance of electrodeposited nanocrystalline iron–nickel alloys. Appl Surf Sci 258:6884–6890

  19. 19.

    Pippel E, Woltersdorf J, Grabke HJ (2003) Microprocesses of metal dusting on iron-nickel alloys and their dependence on the alloy composition. Mater Corros 54:747–751

  20. 20.

    Taghvaei AH, Ebrahimi A, Ghaffari M, Janghorban K (2011) Investigating the magnetic properties of soft magnetic composites based on mechanically alloyed nanocrystalline Fe–5wt% Ni powders. J Magn Magn Mater 323:149–155

  21. 21.

    Nakamura K, Fukuoka M, Ichinokura O (2014) Performance improvement of magnetic gear and efficiency comparison with conventional mechanical gear. J Appl Phys 115:17A314

  22. 22.

    Lund-Olesen T, Buus BB, Howalt JG, Hansen MF (2008) Magnetic bead micromixer: influence of magnetic element geometry and field amplitude. J Appl Phys 103:07E902

  23. 23.

    Sigmund WM, Bell NS, Bergström L (2000) Novel powder-processing methods for advanced ceramics. J Am Ceram Soc 83:1557–1574

  24. 24.

    Zhang D, Su B, Button TW (2004) Preparation of concentrated aqueous alumina suspensions for soft-molding microfabrication. J Eur Ceram Soc 24:231–237

  25. 25.

    Hassanin H, Jiang K (2009) Alumina composite suspension preparation for softlithography microfabrication. Microelectron Eng 86:929–932

  26. 26.

    Wu W, Liu S, Hong H, Chen S (2012) Stability analysis of water-based nanofluids prepared by using supersonic dispersion method. Adv Mater Res 383:6174–6180

  27. 27.

    Leng Y, Sato K, Li JG, Ishigaki T, Iijima M, Kamiya H, Yoshida T (2009) Iron nanoparticles dispersible in both ethanol and water for direct silica coating. Powder Technol 196:80–84

  28. 28.

    Ahn SJ, Min JH, Kim J, Moon J (2008) Process mechanism for vacuum-assisted microfluidic lithography with ceramic colloidal suspensions. J Am Ceram Soc 91:2143–2149

  29. 29.

    Huisman W, Graule T, Gauckler LJ (1995) Alumina of high reliability by centrifugal casting. J Eur Ceram Soc 15:811–821

  30. 30.

    Meng JH, Loh NH, Fu G, Tay BY, Tor SB (2011) Micro powder injection molding of alumina microchannel part. J Eur Ceram Soc 31:1049–1056

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Correspondence to Junhu Meng.

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Zhou, H., Su, B., Guo, T. et al. Fabrication of iron-nickel alloy microcomponents by centrifuge-assisted micromolding. Int J Adv Manuf Technol 82, 839–846 (2016).

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  • Iron-nickel alloy
  • Microcomponents
  • Centrifuge-assisted micromolding
  • Linear shrinkage
  • Microhardness
  • Surface roughness