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Growth and Characterization of Magnesium Single Crystal for Biodegradable Implant Material Application

Joshi, Madhura A
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1448275234

Abstract Details

2015, MS, University of Cincinnati, Engineering and Applied Science: Materials Science.
Magnesium (Mg) is one of the most promising biodegradable materials for implants owing to its mechanical properties. But because of its highly corrosive nature, its corrosion behavior is difficult to control or predict. This document explores a new approach by using single crystal magnesium for the implant application. Directional solidification technique using vertical modified Bridgman-Stockbarger method has been used to grow the high purity Mg single crystals. They have been characterized to test their single crystallinity and high purity using metallogrphy, X-ray diffraction, pole figure, inductively coupled plasma mass spectroscopy (ICPMS) and Micro computed tomography or "micro-CT" techniques. Attempts to improve the corrosion behavior of the substrate has been made via utilizing various surface treatments such as DC anodization, micro arc oxidation (MAO) and chemical etching. In vitro and in vivo corrosion testing has been done to evaluate the corrosion performance using potentiodynamic DC polarization testing as well as weight loss testing. Film characteristics were studied using the various surface analysis techniques such as scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). Medical device prototypes were made for the animal model studies by the NSF Engineering Research Center for Revolutionizing Metallic Biomaterials (ERC-RMB) participant collaborators. They were tested for their biological behavior and compatibility.
Vesselin Shanov, Ph.D. (Committee Chair)
Relva Buchanan, Sc.D. (Committee Member)
Mark Schulz, Ph.D. (Committee Member)
108 p.
Materials Science
High Purity Magnesium Single Crystal; Biodegradable Implants; Surface Treatments; Electrochemial Corrosion Testing; Modified Vertical Bridgman Stockbarger Method; Directional solidification

Recommended Citations

Citations

  • Joshi, M. A. (2015). Growth and Characterization of Magnesium Single Crystal for Biodegradable Implant Material Application [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1448275234

    APA Style (7th edition)

  • Joshi, Madhura. Growth and Characterization of Magnesium Single Crystal for Biodegradable Implant Material Application. 2015. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1448275234.

    MLA Style (8th edition)

  • Joshi, Madhura. "Growth and Characterization of Magnesium Single Crystal for Biodegradable Implant Material Application." Master's thesis, University of Cincinnati, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1448275234

    Chicago Manual of Style (17th edition)

ucin1448275234
313
© 2015, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.