Solution of emulsifiable oil and hydrogen peroxide for chemical–mechanical polishing of Ti alloy—A green approach

• Published in: Materials letters Vol. 122; pp. 252 - 255
• Main Authors: Kaushik, Roopesh M., Bhandakkar, Ajit B., Patro, T. Umasankar
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.05.2014
• Subjects: Aircraft components; Biocompatibility; Chemical-mechanical polishing; Hydrogen peroxide; Metals and alloys; Mirror-finish; Polished; Polishing; Polishing solution; Roughness; Surfaces; Surgical implants; Titanium base alloys; Surfaces; Metals and alloys; Polishing solution; Mirror-finish; Chemical–mechanical polishing
• ISSN: 0167-577X; 1873-4979
• DOI: 10.1016/j.matlet.2014.02.059

A simple solution mixture comprising an emulsifiable oil and hydrogen peroxide was used for chemical–mechanical polishing (CMP) of Ti alloy with a composition of Ti–6.3Al–1.9V–2.9Zr–2.1Mo. The solution was found to be an effective polishing agent resulting in mirror-finish of the alloy surface with a considerable reduction in average surface roughness (from Ra~0.1 to 0.04μm) within 10min of CMP. Further the root-mean-square roughness and arithmetic mean deviation of roughness of polished surface were found to be 1.12nm and 0.96nm, respectively. The chemical mixture used in the present study is greener and safer compared to the previously used chemicals for polishing of Ti alloys. Further the solution is devoid of any abrasive particles. On account of these advantages, the new polishing solution is expected to find use in mirror-polishing of Ti alloys for aerospace and biomedical applications. [Display omitted] •A solution mixture of emulsifiable oil, hydrogen peroxide and water successfully mirror-finishes the VT20 titanium alloy surface.•The arithmetic mean deviation of roughness after polishing is found to be 0.96nm.•The polishing solution is easy to prepare and is devoid of abrasive particles.•The solution is greener and safer to use compared to the previously used chemical solutions.