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Simple and effective way to improve the stability of titanium based boron doped diamond film electrode

Authors Guo, Liang HKUST affiliated (currently or previously)
Chen, Guohua View this author's profile
Issue Date 2007
Source Materials Research Society Symposium Proceedings , v. 956, 2007, p. 105-111
Summary Boron-doped diamond film coated titanium (Ti/BDD) becomes increasingly attractive because of the combined properties of these two unique materials. The challenge for the composite material is the stability especially when it is used as an electrode. In order to meet this challenge, two temperature (2-temp) staged hot filament chemical vapor deposition method was employed in this study. The accelerated working life time was significantly increased to 804 hours for the 2-temp electrode, compared with 244 hours for the diamond film electrode fabricated under one temperature (1-temp) stage method. With the characterization of microRaman, XRD, and cross-sectional SEM, a multilayer of Ti/TiC/(Diamond+Amorphous Carbon)/Diamond can be found in the 2-temp sample and the structure of Ti/TiC/Diamond in the 1-temp sample. There was less void space observed in the interlayer of 2-temp sample. The multi-layered compact structure plays an important role in improving the adhesion of diamond film to the titanium substrate which in turn increases the electrode working life time by over 3 times. © 2007 Materials Research Society.
ISSN 0272-9172
ISBN 9781558999138
Language English
Format Conference paper
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