Dental Materials Journal
Online ISSN : 1881-1361
Print ISSN : 0287-4547
ISSN-L : 0287-4547
Original Papers
Chemical mechanical polishing of titanium with colloidal silica containing hydrogen peroxide — mirror polishing and surface properties
Seigo OKAWAKouichi WATANABE
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2009 Volume 28 Issue 1 Pages 68-74

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Abstract

Chemical mechanical polishing (CMP) of cpTi (Ti) was carried out using two types of slurries, acidic and basic colloidal silica containing H2O2 up to 3 wt%, to obtain flat and mirror-polished surfaces without any contaminated and reacted layers. Polishing behavior and surface properties were investigated using AFM, EPMA, and XPS. Weight loss of Ti polished by CMP using the basic slurry was larger than that using the acidic one, and surface roughness was less than 2 nm RMS when basic slurry containing 3 wt% H2O2 was used. Moreover, three kinds of chemical species, OH-, O2-, and H2O, were detected on the Ti surfaces polished by CMP using these slurries. Results of this study showed that CMP using colloidal silica containing H2O2 successfully created a mirror-polished surface without contaminated and reacted layers.

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© 2009 The Japanese Society for Dental Materials and Devices
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