Effects of binder system and processing parameters on formability of porous Ti/HA composite through powder injection molding

Muhammad Rafi Raza, Abu Bakar Sulong, Norhamidi Muhamad, Majid Niaz Akhtar, Javad Rajabi

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Porous titanium-hydroxyapatite (Ti/HA) composite is a developed composite material suitable for bio-medical applications. Powder injection molding (PIM) with space holder method is used to produce porous Ti/HA with mechanical properties, similar to human bone, and pores helps to initiate tissue growth. However, the differences in physical and mechanical properties of these composites are the main challenges during debinding and sintering. Therefore, the main objective is to determine effects of binder systems and processing parameters on formability of Ti/HA composite. In PIM, a binder system is necessary to produce green and ultimately sintered part. There are two binder systems and variation of sintering temperature has been used. Results revealed that Polyethylene glycol (PEG)-based binder system is applicable with NaCl space holder and optimum sintering parameters, including temperature, heating rate, and holding time of 1300. °C, 10. °C/min, and 5 h, respectively. The fabricated porous Ti/HA exhibits average porosity, pore size distribution, compressive strength, and roughness values of 55%, 60. μm to 170. μm, 370. MPa, and 0.323. μm, respectively. FESEM results showed that the pores are interconnected. It may be an appropriate material for future bio-medical applications.

Original languageEnglish
Pages (from-to)386-392
Number of pages7
JournalMaterials and Design
Volume87
DOIs
Publication statusPublished - 15 Dec 2015

Fingerprint

Durapatite
Formability
Titanium
Hydroxyapatite
Injection molding
Powders
Binders
Sintering
Composite materials
Medical applications
Processing
Mechanical properties
Heating rate
Polyethylene glycols
Compressive strength
Pore size
Bone
Physical properties
Porosity
Surface roughness

Keywords

  • Compression strength
  • Microstructure
  • Physical properties
  • Porous structure
  • Porous titanium-hydroxyapatite composite
  • Powder injection molding (PIM)

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)

Cite this

Effects of binder system and processing parameters on formability of porous Ti/HA composite through powder injection molding. / Raza, Muhammad Rafi; Sulong, Abu Bakar; Muhamad, Norhamidi; Akhtar, Majid Niaz; Rajabi, Javad.

In: Materials and Design, Vol. 87, 15.12.2015, p. 386-392.

Research output: Contribution to journalArticle

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