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Park, Hyung Wook
Multiscale Hybrid Manufacturing Lab
Research Interests
  • Advanced manufacturing process and system
  • Flexible manufacturing
  • Multiscale materials

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Influence of a large pulsed electron beam (LPEB) on the corrosion resistance of Ti-6Al-7Nb alloys

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Title
Influence of a large pulsed electron beam (LPEB) on the corrosion resistance of Ti-6Al-7Nb alloys
Author
Kim, JisooPark, Hyung Wook
Issue Date
2015-01
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
CORROSION SCIENCE, v.90, no.1, pp.153 - 160
Abstract
Pulsed electron-beam irradiation was used as a finishing process for Ti-6Al-7Nb titanium alloy to increase the corrosion resistance and surface hardness. The corrosion characteristics were investigated using potentiodynamic polarization and electrochemical impedance spectroscopy to obtain Nyquist plots and log(f)-|. Z| plots. The surface hardness was examined using nano-indentation with a Berkovich tip. The corrosion resistance of the irradiated surface increased, exhibiting a nobler corrosion potential, a higher polarization resistance, and a lower corrosion current density than the untreated surface. The variation in the contact angle and formation of a re-solidified passivation layer indicate a stable surface. The surface hardness increased significantly following irradiation, which was attributed to an increase in the density of dislocations and a decrease in the fraction of the pre-dominant slip plane.
URI
https://scholarworks.unist.ac.kr/handle/201301/9805
URL
http://www.scopus.com/inward/record.url?eid=2-s2.0-84913555680&partnerID=40&md5=c00687393bbc1c7bafb50594c24b52c4
DOI
10.1016/j.corsci.2014.10.008
ISSN
0010-938X
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