TY - JOUR
T1 - Friction properties of partially polished CVD diamond films at different sliding speeds
AU - Miki, Hiroyuki
AU - Tsutsui, Atsushi
AU - Takeno, Takanori
AU - Takagi, Toshiyuki
N1 - Funding Information:
This work was partially supported by the Asahi Glass Foundation in Japan , and a Grant-in-Aid for Challenging Exploratory Research ( 23656113 ) from the Japan Society for the Promotion of Science (JSPS). The authors are greatly thankful to Prof. Koshi Adachi and Dr. Zahrul Fuadi from the Tribology Laboratory, Graduate School of Engineering, Tohoku University for their useful discussions about experiments. The authors also thank Mr. Michel Belin from the Laboratory of Tribology and System Dynamics, Ecole Centrale de Lyon, France and Mr. Takeshi Sato from the Institute of Fluid Science, Tohoku University, Japan, for their technical assistance.
PY - 2012/4
Y1 - 2012/4
N2 - The rate dependence of the friction properties between a partially polished diamond film and metal has been investigated experimentally in the present research. Partially polished diamond films have low friction and low wear properties in air, and it is expected that the friction coefficient becomes very small at high sliding speeds. Polycrystalline diamond films are deposited on SiC substrates by hot filament chemical vapor deposition using a gas mixture of CH 4 and H 2. Partially polished diamond films of two different surface roughnesses, as well as the as-deposited diamond film, were tested under different sliding speed conditions. The friction properties between the diamond films and an AISI440C pin under dry conditions were determined in ambient atmosphere. For the polished films, a definite reduction in the friction coefficient was observed as the sliding speed increased; the speed at which this reduction began depended on the surface roughness of the film. Extremely low friction and noiseless sliding between films and counter metals were realized on polished diamonds as the sliding speeds increased.
AB - The rate dependence of the friction properties between a partially polished diamond film and metal has been investigated experimentally in the present research. Partially polished diamond films have low friction and low wear properties in air, and it is expected that the friction coefficient becomes very small at high sliding speeds. Polycrystalline diamond films are deposited on SiC substrates by hot filament chemical vapor deposition using a gas mixture of CH 4 and H 2. Partially polished diamond films of two different surface roughnesses, as well as the as-deposited diamond film, were tested under different sliding speed conditions. The friction properties between the diamond films and an AISI440C pin under dry conditions were determined in ambient atmosphere. For the polished films, a definite reduction in the friction coefficient was observed as the sliding speed increased; the speed at which this reduction began depended on the surface roughness of the film. Extremely low friction and noiseless sliding between films and counter metals were realized on polished diamonds as the sliding speeds increased.
KW - CVD diamond
KW - Hydrodynamic lubrication
KW - Partly polished surface
KW - Plateau structure
KW - Tribology
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U2 - 10.1016/j.diamond.2012.01.004
DO - 10.1016/j.diamond.2012.01.004
M3 - Article
AN - SCOPUS:84858339435
VL - 24
SP - 167
EP - 170
JO - Diamond and Related Materials
JF - Diamond and Related Materials
SN - 0925-9635
ER -