Proceedings of the Materials Research Society of Korea Conference (한국재료학회:학술대회논문집)

Materials Research Society of Korea (한국재료학회)
권호 표지

Fabrication and Characterization of the Ti-TCP Composite Biomaterials by Spark Plasma Sintering

  • Mondal, Dibakar (Department of Biomedical Engineering and Materials, College of Medicine, Soonchunhyang Univ.ersity) ;
  • Park, Hyun-Kuk (Materials & Parts Team, KITECH) ;
  • Oh, Ik-Hyun (Materials & Parts Team, KITECH) ;
  • Lee, Byong-Taek (Department of Biomedical Engineering and Materials, College of Medicine, Soonchunhyang Univ.ersity)
  • Published : 2011.05.27
Download PDF
⟨ Previous Next ⟩

Abstract

Ti metal has superior mechanical properties along with biocompatibility, but it still has the problem of bio-inertness thus forming weaker bond in bone/implant interface and long term clinical performance as orthopaedic and dental devices are restricted for stress shielding effect. On the other hand, despite the excellent biodegradable behavior as being an integral constituent of the natural bone, the mechanical properties of ${\beta}$-tricalcium phosphate $(Ca_3(PO_4)_2;\;{\beta}-TCP)$ ceramics are not reliable enough for post operative load bearing application in human hard tissue defect site. One reasonable approach would be to mediate the features of the two by making a composite. In this study, ${\beta}$-TCP/Ti ceramic-metal composites were fabricated by spark plasma sintering in inert atmosphere to inhibit the formation of $TiO_2$. Composites of 30 vol%, 50 vol% and 70 vol% ${\beta}$-TCP with Ti were fabricated. Detailed microstructural and phase characteristics were investigated by FE-SEM, EDS and XRD. Material properties like relative density, hardness, compressive strength, elastic modulus etc. were characterized. Cell viability and biocompatibility were investigated using the MTT assay and by examining cell proliferation behavior.

Keywords