Journal of Materials Science

, Volume 49, Issue 10, pp 3629–3641

Microstructure, corrosion, and mechanical properties of compression-molded zinc-nanodiamond composites

  • Miao Yu
  • Christina George
  • Yinong Cao
  • David Wootton
  • Jack Zhou
Article

DOI: 10.1007/s10853-014-8066-x

Cite this article as:
Yu, M., George, C., Cao, Y. et al. J Mater Sci (2014) 49: 3629. doi:10.1007/s10853-014-8066-x

Abstract

Zinc-nanodiamond (ND) composite is proposed as a novel biodegradable implant material due to its desirable corrosion, mechanical, and biocompatible properties. In this research, the microstructure, corrosion behavior, and mechanical properties of Zn-ND composites were investigated for the first time as a potential implant material in biomedical applications. Powder metallurgy manufacturing processes were used and different sintering conditions were studied. Grain size increased with increasing sintering temperature and longer sintering time. Corrosion resistance was improved 61.0, 65.9, and 70.7 % for 1, 2.5, and 5 % ND compared with pure Zn. Compression and hardness tests were performed to determine the mechanical properties. In the compression tests, Zn-1ND showed the highest Young’s modulus, with 10.95 and 27.32 % more than pure Zn and Zn-5ND. Pure Zn had the highest compressive strength, 11.8 and 29.5 % higher than Zn-1ND and Zn-2.5ND. Zn-1ND and Zn-2.5ND are 55.2 and 68.9 % lower in hardness compared with pure Zn (HV = 27). Compression-molded zinc with low concentrations of nanodiamond offers a promising combination of strength and low corrosion rate, and with strength approaching cortical bone and higher than most biological tissues.

Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • Miao Yu
    • 1
  • Christina George
    • 2
  • Yinong Cao
    • 3
  • David Wootton
    • 4
  • Jack Zhou
    • 1
  1. 1.Department of Mechanical Engineering and MechanicsDrexel UniversityPhiladelphiaUSA
  2. 2.School of Biomedical Engineering and Health SystemsDrexel UniversityPhiladelphiaUSA
  3. 3.Department of Material Science and EngineeringDrexel UniversityPhiladelphiaUSA
  4. 4.Maurice Kanbar Center for Biomedical EngineeringCooper UnionNew YorkUSA

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