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 journalArticle

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

  • Biomaterials
  • Biomedical Engineering
  • Biotechnology
  • Biochemistry
  • Molecular Biology
  • Medicine(all)

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