Aluminum-free low-modulus Ti-C composites that exhibit reduced image artifacts during MRI

Sung Chul Kim, Hong Jun Lee, Seong Guk Son, Hyun Kwang Seok, Kang Sik Lee, Seung Young Shin, Jae Chul Lee

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Feasibility studies were performed to determine the suitability of a novel synthesis technique for fabricating multifunctional composite materials for orthopedic implants. By blending paramagnetic Ti powder with diamagnetic graphite and consolidating the resulting mixtures, Ti-C composites that cannot be feasibly obtained via conventional alloying techniques or ingot metallurgy were synthesized. The synthesized composite material exhibited extremely low magnetic susceptibility (χ = 67.6 x 10-6), and, as a result, exhibited fewer artifacts during magnetic resonance imaging. The strength of the composite material (σ = 770 MPa) was such that it could support external loads to which the human body is subjected, but its Young's modulus was low (E = 81.9 GPa) such that it could mitigate the stress-shielding effect. The material was also free from toxic elements such as Al and V and, thus, can be considered less harmful.

Original languageEnglish
Pages (from-to)322-331
Number of pages10
JournalActa Biomaterialia
Volume12
Issue number1
DOIs
Publication statusPublished - 2015 Jan 15

Keywords

  • Biocompatibility
  • Composite
  • Magnetic resonance imaging
  • Mechanical property
  • Powder processing

ASJC Scopus subject areas

  • Biotechnology
  • Biomaterials
  • Biochemistry
  • Biomedical Engineering
  • Molecular Biology

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