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

doi:10.1016/j.actbio.2014.10.016

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

GREEN SCHOOL (Graduate School of Energy and Environment)

Research output: Contribution to journal › Article › peer-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 language	English
Pages (from-to)	322-331
Number of pages	10
Journal	Acta Biomaterialia
Volume	12
Issue number	1
DOIs	https://doi.org/10.1016/j.actbio.2014.10.016
Publication status	Published - 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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title = "Aluminum-free low-modulus Ti-C composites that exhibit reduced image artifacts during MRI",

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.",

keywords = "Biocompatibility, Composite, Magnetic resonance imaging, Mechanical property, Powder processing",

author = "Kim, {Sung Chul} and Lee, {Hong Jun} and Son, {Seong Guk} and Seok, {Hyun Kwang} and Lee, {Kang Sik} and Shin, {Seung Young} and Lee, {Jae Chul}",

note = "Funding Information: J.C. is grateful to Professor S.J. Yang at Chungnam National University for the valuable advice to the present study. This work was supported by the KIST internal program (2E23720) of KIST and the Fundamental R&D Program for Core Technology of Materials (Grant No. 10037308 ) funded by the Ministry of Knowledge Economy, Republic of Korea., Republic of Korea. ",

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AU - Seok, Hyun Kwang

AU - Lee, Kang Sik

AU - Shin, Seung Young

AU - Lee, Jae Chul

N1 - Funding Information: J.C. is grateful to Professor S.J. Yang at Chungnam National University for the valuable advice to the present study. This work was supported by the KIST internal program (2E23720) of KIST and the Fundamental R&D Program for Core Technology of Materials (Grant No. 10037308 ) funded by the Ministry of Knowledge Economy, Republic of Korea., Republic of Korea.

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N2 - 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.

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