Effect of sintering parameters on physical and mechanical properties of powder injection moulded stainless steel-hydroxyapatite composite

Mohd Ikram Ramli, Abu Bakar Sulong, Norhamidi Muhamad, Andanastuti Muchtar, Amir Arifin, Farhana Mohd Foudzi, Mohannad Saleh Hammadi Al-Furjan

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The combination of metallic bio-inert material, stainless-steel 316L (SS316L) and a bio-active material, hydroxyapatite (HA) can produce a composite which has superior properties for orthopaedic applications. The main objective of this study is to investigate the effects of sintering temperature and holding time on the physical and mechanical properties of the sintered part. 50wt.% SS316L and 50wt.% HA were mixed with a binder system of palm stearin (PS) and polyethylene (PE) at 61 vol.% powder loading. Rheological properties show a pseudo-plastic behaviour of the feedstock, where viscosity decreases with increasing shear rate. The feedstock was injection moulded into a tensile bar shape while thermal debinding was carried out at 320C and 500C. The brown parts were sintered at 1000, 1100, 1200 and 1300C, with three different sintering times of 1, 3 and 5 hours in the furnace. It was found that the highest sintered density measured was 95.61% of the theoretical density. In addition, the highest hardness and Young’s modulus measured were 150.45 HV and 52.61 GPa respectively, which are higher than those of human bone. The lowest percentage of carbon content was 0.022wt.% given by the sample sintered at 1300C for 1 hour. Therefore, SS316L/HA composite with good mechanical and physical properties was successfully produced through the PIM process.

Original languageEnglish
Article numbere0206247
JournalPLoS One
Volume13
Issue number10
DOIs
Publication statusPublished - 1 Oct 2018

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hydroxyapatite
Stainless Steel
stainless steel
Durapatite
Powders
mechanical properties
powders
physical properties
Sintering
Physical properties
injection
feedstocks
Mechanical properties
Feedstocks
Injections
Composite materials
stearin
furnaces
Elastic Modulus
orthopedics

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)

Cite this

Effect of sintering parameters on physical and mechanical properties of powder injection moulded stainless steel-hydroxyapatite composite. / Ramli, Mohd Ikram; Sulong, Abu Bakar; Muhamad, Norhamidi; Muchtar, Andanastuti; Arifin, Amir; Foudzi, Farhana Mohd; Hammadi Al-Furjan, Mohannad Saleh.

In: PLoS One, Vol. 13, No. 10, e0206247, 01.10.2018.

Research output: Contribution to journalArticle

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