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[Study of pure titanium electrolytic polishing].
1Department of Dental Technology 1, School of Dentistry, Tokyo Medical and Dental University.
Shika Zairyo, Kikai = Journal of the Japanese Society for Dental Materials and Devices
|March 1, 1990
Summary
Electrolytic polishing of pure titanium achieved a mirror finish on cast denture frame sizes using a novel non-aqueous electrolyte. Optimal conditions ensured a safe, reusable solution for effective titanium surface treatment.
Area of Science:
- Materials Science
- Electrochemistry
- Biomaterials Engineering
Background:
- Achieving a mirror-smooth surface on pure titanium is crucial for applications like cast denture frames.
- Traditional polishing methods can be challenging for large or complex titanium structures.
Purpose of the Study:
- To develop an effective electrolytic polishing method for pure titanium test pieces.
- To determine optimal conditions for achieving a mirror surface finish on pure titanium at cast denture frame size.
Main Methods:
- Electrolytic polishing was performed on pure titanium using a non-aqueous electrolyte.
- The process was optimized for voltage, time, and temperature.
- A specific electrolyte composition was identified: 70 ml ethyl alcohol, 30 ml iso-propyl alcohol, 6 g aluminum chloride, and 25 g zinc chloride.
Main Results:
- Successful electrolytic polishing of pure titanium to a mirror surface was demonstrated for areas up to 30 cm2.
- Optimal polishing conditions were found to be 30 V for 6 minutes at 25 degrees C.
- The developed electrolyte solution proved to be safe and allowed for frequent reuse.
Conclusions:
- Electrolytic polishing is a viable method for achieving high-quality surface finishes on pure titanium for dental applications.
- The identified electrolyte and conditions provide a practical and safe solution for polishing larger titanium components.