Quantitative measurement for the effect of enhanced nucleation on the adhesive strength of diamond coatings

Shoji Kamiya, Naoki Yoshida, Yoichi Tamura, Masumi Saka, Hiroyuki Abé

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Nucleation of chemically vapor deposited (CVD) diamond can be enhanced by applying negative bias voltage to the substrates. The bias-enhanced nucleation of diamond was examined in this report for the case of microwave plasma CVD on cobalt-cemented tungsten carbide (WC-Co) substrates. Nucleation density was enhanced up to 1 × 109 cm-2, although the reproducibility of the experiment was poor. Adhesive toughness of diamond films with different nucleation density was measured by a new technique recently developed by the authors. The results suggest that the adhesion of diamond coatings on WC-Co substrates can be considerably improved by higher nucleation density as the consequence of bias application.

Original languageEnglish
Pages (from-to)738-742
Number of pages5
JournalSurface and Coatings Technology
Volume142-144
DOIs
Publication statusPublished - 2001 Jul 1

Keywords

  • Adhesive toughness
  • Bias-enhanced nucleation
  • CVD diamond
  • WC-Co substrate
  • Wear resistant coatings

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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