Electrochemical property and corrosion behavior of multi-directionally forged titanium in fluoride solution

Dental Materials Journal
Ginga SuzukiChikahiro Ohkubo

Abstract

Multi-directional forging (MDFing) can improve the various properties of metals and alloys due to the evolution of an ultrafine-grained structure. In the present study, electrochemical properties and corrosion behaviors in a fluoride solution of MDFed pure titanium (MDF-Ti) were evaluated by comparing with conventional coarse-grained pure titanium (Ti). The Eopen value of MDF-Ti was significantly higher than that of Ti. However, similar potentiodynamic polarization profiles were obtained for Ti and MDF-Ti. Immersion in NaF solution caused no severe corrosion to Ti or MDF-Ti. However, immersion in acidulate phosphate fluoride solution (APF) revealed that MDF-Ti had better corrosion resistance than Ti at shorter time immersion periods and was more susceptible to corrosion for longer immersion. Significantly less release of titanium was observed for MDF-Ti in shorter immersion periods in APF. In conclusion, MDF-Ti showed similar electrochemical behaviors to Ti and less susceptible to corrosion in shorter time APF immersion.

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Citations

Jan 26, 2021·The Journal of Advanced Prosthodontics·Ginga SuzukiChikahiro Ohkubo
Apr 23, 2021·Dental Materials Journal·Masateru AnzaiKatsuhiko Kimoto

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