Rheological analysis of microminiature powder injection molding (μPIM) feedstock

Haw Pei Li, Norhamidi Muhamad

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

A rheological analysis has been performed to evaluate the characteristics and behaviors of Microminiature Powder Injection Molding (μPIM) feedstocks. The feedstocks comprised of 316L stainless steel powder and water-based binder components. Feedstocks formulations with powder loading of 59% to 63% were prepared and investigated. In these formulations, the binder system consists of 65% Polyethelena Glycol (PEG), 25% Polymethyl Methacrilate (PMMA) and 10% Cellulose Acetate Butyrate (CAB) based on the weight fraction. The influences of rheological behaviors such as flow activation energy (E), Power-Law exponent (n), viscosity (η) and temperature (T) of the SS316L/PEG/PMMA/CAB feedstocks are analyzed and discussed. Results show that all of the feedstocks exhibited the pseudo-plastic flow behavior. The homogenous feedstock at 61 vol. % demonstrated the most satisfactory rheological properties for μPIM with the lowest flow activation energy, Power-Law exponent, n < 1 and moderate viscosity values. It was chosen to perform the injection molding process. Micro components have been replicated successfully by using this selected feedstock.

Original languageEnglish
Title of host publicationApplied Mechanics and Materials
Pages238-243
Number of pages6
Volume52-54
DOIs
Publication statusPublished - 2011
Event2011 1st International Conference on Mechanical Engineering, ICME 2011 - Phuket
Duration: 3 Apr 20114 Apr 2011

Publication series

NameApplied Mechanics and Materials
Volume52-54
ISSN (Print)16609336
ISSN (Electronic)16627482

Other

Other2011 1st International Conference on Mechanical Engineering, ICME 2011
CityPhuket
Period3/4/114/4/11

Fingerprint

Injection molding
Feedstocks
Powders
Glycols
Binders
Cellulose
Activation energy
Viscosity
Plastic flow
Stainless steel
Water

Keywords

  • Feedstock
  • Microminiature Powder Injection Molding (μPIM)
  • Pseudo-plastic
  • Rheological analysis

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Li, H. P., & Muhamad, N. (2011). Rheological analysis of microminiature powder injection molding (μPIM) feedstock. In Applied Mechanics and Materials (Vol. 52-54, pp. 238-243). (Applied Mechanics and Materials; Vol. 52-54). https://doi.org/10.4028/www.scientific.net/AMM.52-54.238

Rheological analysis of microminiature powder injection molding (μPIM) feedstock. / Li, Haw Pei; Muhamad, Norhamidi.

Applied Mechanics and Materials. Vol. 52-54 2011. p. 238-243 (Applied Mechanics and Materials; Vol. 52-54).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Li, HP & Muhamad, N 2011, Rheological analysis of microminiature powder injection molding (μPIM) feedstock. in Applied Mechanics and Materials. vol. 52-54, Applied Mechanics and Materials, vol. 52-54, pp. 238-243, 2011 1st International Conference on Mechanical Engineering, ICME 2011, Phuket, 3/4/11. https://doi.org/10.4028/www.scientific.net/AMM.52-54.238
Li HP, Muhamad N. Rheological analysis of microminiature powder injection molding (μPIM) feedstock. In Applied Mechanics and Materials. Vol. 52-54. 2011. p. 238-243. (Applied Mechanics and Materials). https://doi.org/10.4028/www.scientific.net/AMM.52-54.238
Li, Haw Pei ; Muhamad, Norhamidi. / Rheological analysis of microminiature powder injection molding (μPIM) feedstock. Applied Mechanics and Materials. Vol. 52-54 2011. pp. 238-243 (Applied Mechanics and Materials).
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