Self-lubrication of chlorine-implanted titanium nitride coating

Tatsuhiko Aizawa, Thananan Akhadejdamrong, Chihiro Iwamoto, Yuichi Ikuhara, Atsushi Mitsuo

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


Chlorine implantation into TiN coatings decreases the wear loss and the friction coefficient. Even by low-dose chlorine implantation, the wear volume is decreased by three orders of magnitude or more, and the friction coefficient becomes <0.1. This self-lubrication mechanism is related to the presence and mobility of implanted chlorine atoms inside the columnar TiN microstructure. According to observations of chlorine-implanted TiN coatings using high-resolution transmission electron microscopy, the chlorine atoms are present in the damaged region, where TiN is composed of nanosized grains. From these data, a self-lubrication mechanism is proposed with chlorine catalyzing the oxidation of titanium and leading to the formation of some tribological reaction product.

Original languageEnglish
Pages (from-to)21-24
Number of pages4
JournalJournal of the American Ceramic Society
Issue number1
Publication statusPublished - 2002 Jan
Externally publishedYes

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry


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