The characterization and rheological investigation of materials for powder injection moulding

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Stainless steel and Zirconia have become an attractive choice of powder injection moulding (PIM) materials because of their respective excellent mechanical and thermal properties. These are often combined deliberately to produce functional graded components. The characterization and rheological investigations of the materials are thus indispensable for successful implementation of subsequent stages to the PIM process. In this investigation, the powder materials were characterized. Two feedstock with solid loadings of 68% for stainless steel (17-4PH) and 50% for 3mol% yttria stabilized zirconia (3YSZ), were prepared based on optimal loading of 3% lower than the critical value. A common binder was employed comprising of 60% palm stearin and 40% polyethylene. The rheological results for the two materials exhibited pseudo-plastic and shear thinning behaviour indicated by decrease in velocity with increasing shear rate. The results also show that a temperature of 130°C is considered appropriate for injection moulding of both feedstock.

Original languageEnglish
Pages (from-to)97-107
Number of pages11
JournalJournal of Mechanical Engineering
VolumeSI 3
Issue number2
Publication statusPublished - 1 Jan 2017

Fingerprint

Injection molding
Powders
Feedstocks
Stainless steel
Shear thinning
Yttria stabilized zirconia
Zirconia
Shear deformation
Binders
Polyethylenes
Thermodynamic properties
Plastics
Mechanical properties
Temperature

Keywords

  • 2C-Powder injection molding
  • Binder characteristics
  • Feedstock
  • Rheology
  • Solid loading

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

The characterization and rheological investigation of materials for powder injection moulding. / Emeka, Ukwueze Bonaventure; Sulong, Abu Bakar; Muhamad, Norhamidi; Sajuri, Zainuddin.

In: Journal of Mechanical Engineering, Vol. SI 3, No. 2, 01.01.2017, p. 97-107.

Research output: Contribution to journalArticle

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