Abstract
In humid air and dry nitrogen, as-deposited, fine-grain diamond films and polished, coarse-grain diamond films have low steady-state coefficients of friction (<0.1) and low wear rates (≤10−6 mm3/N-m). In an ultrahigh vacuum (10−7 Pa), however, they have high steady-state coefficients of friction (>0.6) and high wear rates (≥10−4 mm3/N-m). Therefore, the use of as-deposited, fine-grain and polished, coarse-grain diamond films as wear-resistant, self-lubricating coatings must be limited to normal air or gaseous environments such as dry nitrogen. On the other hand, carbon-ion-implanted, fine-grain diamond films and nitrogen-ion-implanted, coarse-grain diamond films have low steady-state coefficients of friction (<0.1) and low wear rates (≤10−6 mm3/N-m) in all three environments. These films can be effectively used as wear-resistant, self-lubricating coatings in an ultrahigh vacuum as well as in normal air and dry nitrogen.
© 1995 Optical Society of America
PDF ArticleMore Like This
C.G. Fountzoulas, T.Z. Kattamis, J.D. Demaree, and J.K. Hirvonen
M907 Applications of Diamond Films and Related Materials (DFM) 1995
T. Leyendecker, O. Lemmer, S. Esser, and M. Frank
DCT183 Applications of Diamond Films and Related Materials (DFM) 1995
T.L. Jacobs, J.H. Spence, S.S. Wagal, and H.J. Oien
DLCBM753 Applications of Diamond Films and Related Materials (DFM) 1995