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

Liang Guo, Guohua Chen

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

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.
Original languageEnglish
Title of host publicationDiamond Electronics-Fundamentals to Applications
Pages105-111
Number of pages7
Volume956
Publication statusPublished - 1 Dec 2007
Externally publishedYes
Event2006 MRS Fall Meeting - Boston, MA, United States
Duration: 27 Nov 20061 Dec 2006

Conference

Conference2006 MRS Fall Meeting
Country/TerritoryUnited States
CityBoston, MA
Period27/11/061/12/06

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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