NDLI: Microstructural evolution and corrosion behavior of Ti–6Al–4V alloy fabricated by laser metal deposition for dental applications

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Microstructural evolution and corrosion behavior of Ti–6Al–4V alloy fabricated by laser metal deposition for dental applications

Content Provider	Directory of Open Access Journals (DOAJ)
Author	Shujiang Geng Fuhui Wang Yongqiang Fan Xing Zhou Dake Xu Chunguang Yang Qiang Wang
Abstract	In this study, microstructural evolution and corrosion behavior of Ti–6Al–4V (TC4) alloy fabricated by laser metal deposition (LMD) were investigated in simulated saliva at 37 °C as a function of scanning strategies. One-way scanning possessed a higher corrosion resistance than cross-scanning, but both of those were inferior to the wrought one. Compared with conventional wrought counterpart, the higher content of β phase improved the corrosion resistance. Results of Mott–Schottky and potentiostatic tests indicated that the passive film upon the surfaces of all the samples exhibited an N-type semiconductor structure and instantaneous nucleation. Of these, the LMD-ed parts displayed a lower donor concentration, higher vacancy diffusion coefficient, and thicker passive film than the wrought samples. XPS analysis revealed that the double-layer structure of passive film leads to a dense protective layer on the surface while the oxide contents of the three were different.
Related Links	http://www.sciencedirect.com/science/article/pii/S2238785421006694
ISSN	22387854
DOI	10.1016/j.jmrt.2021.07.006
Journal	Journal of Materials Research and Technology
Volume Number	14
Language	English
Publisher	Elsevier
Publisher Date	2021-01-01
Publisher Place	Netherlands
Access Restriction	Open
Subject Keyword	Mining Engineering. Metallurgy Laser Metal Deposition Ti–6al–4v Scanning Strategy Microstructural Evolution Corrosion Behavior
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Surfaces, Coatings and Films Metals and Alloys Biomaterials

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