FABRICATION OF Ti-HAP-CNT HYBRID COMPOSITE BIOMATERIALS AND INVESTIGATION OF PROPERTIES


Karabacak A. H., Çanakçı A., Çelebi M., Özkaya S.

UMTEB – XIV International Scientific Research Congress, Naples, Italy, 14 - 15 September 2023, pp.86-96

  • Publication Type: Conference Paper / Full Text
  • City: Naples
  • Country: Italy
  • Page Numbers: pp.86-96
  • Karadeniz Technical University Affiliated: Yes

Abstract

Titanium and hydroxyapatite materials have great potential for different applications in the

field of biomaterials. The mechanical strength of titanium and the biological similarity of

hydroxyapatite allow the development of effective and reliable biomaterials that can be used

in various health fields. In this study, Titanium was used as a matrix material. Hydroxy apatite

and carbon nanotube were added as reinforcement materials to strengthen the matrix.

Hydroxy apatite was added to all samples at 2 wt%, while carbon nanotube material was

added at varying ratios (0, 0.5, 1, 1.5 and 2 wt%). The process of adding reinforcement

particles to the matrix material was carried out by powder metallurgy method. The matrix and

reinforcement materials were mixed in a planetary type high energy ball mill under argon

atmosphere with a rotational speed of 400 rpm for 5 hours. In addition, tungsten carbide balls

with a ball to powder ratio of 5:1 and a diameter of 10 mm were used in the mixing process.

The mixed powders were sintered by hot pressing method at 600 °C under 600 MPa pressing

pressure for 3 hours. The sintering process was carried out under argon atmosphere. The

morphology of the produced hybrid powders was examined by scanning electron microscopy.

Elemental analysis of the hybrid powders was carried out by EDS device. X-ray diffraction

analyses of hybrid nanocomposite powders were also performed and discussed. Finally, the

hardness of the sintered hybrid nanocomposites was measured by Brinell hardness. The

highest hardness value of the hybrid nanocomposites is 631 HB.