TY - GEN
T1 - Effect of configuration of micro-/nanoscale structure on sliding surface on molecular gas-film lubrication
AU - Isono, Susumu
AU - Yamaguchi, Masashi
AU - Yonemura, Shigeru
AU - Takeno, Takanori
AU - Miki, Hiroyuki
AU - Takagi, Toshiyuki
PY - 2011
Y1 - 2011
N2 - Nakamori et al. found experimentally that the friction between a partly polished diamond coating and a metal surface was drastically reduced to zero as relative speed increased to a few m/s [Diamond Relat. Mater. 14, (2005), 2122]. It seems that diamond coating took off the counter surface because sliding was noiseless in their experiment. However, the mechanism of this phenomenon was unknown. In the previous work, we performed the numerical simulation of micro-/nanoscale gas flow between two sliding surfaces, i. e., the slider surface with microscale surface roughness like partly polished diamond coating and the flat counter surface. And then, we successfully reproduced lift force large enough to suspend the slider used in the experiment and found that this effect became notable only for micro-/nanoscale gas flow. In the present paper, we investigate the effect of configuration of micro-/nanoscale structure on sliding surface on molecular gas-film lubrication. Since micro-/nanoscale gas flows between two sliding surfaces cannot be treated as a continuum, we use the direct simulation Monte Carlo (DSMC) method.
AB - Nakamori et al. found experimentally that the friction between a partly polished diamond coating and a metal surface was drastically reduced to zero as relative speed increased to a few m/s [Diamond Relat. Mater. 14, (2005), 2122]. It seems that diamond coating took off the counter surface because sliding was noiseless in their experiment. However, the mechanism of this phenomenon was unknown. In the previous work, we performed the numerical simulation of micro-/nanoscale gas flow between two sliding surfaces, i. e., the slider surface with microscale surface roughness like partly polished diamond coating and the flat counter surface. And then, we successfully reproduced lift force large enough to suspend the slider used in the experiment and found that this effect became notable only for micro-/nanoscale gas flow. In the present paper, we investigate the effect of configuration of micro-/nanoscale structure on sliding surface on molecular gas-film lubrication. Since micro-/nanoscale gas flows between two sliding surfaces cannot be treated as a continuum, we use the direct simulation Monte Carlo (DSMC) method.
KW - DSMC method
KW - Diamond coating
KW - Micro-nanoscale flow
KW - Molecular gas-film lubrication
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U2 - 10.1063/1.3562734
DO - 10.1063/1.3562734
M3 - Conference contribution
AN - SCOPUS:80054030233
SN - 9780735408890
T3 - AIP Conference Proceedings
SP - 736
EP - 741
BT - 27th International Symposium on Rarefied Gas Dynamics - 2010, RGD27
T2 - 27th International Symposium on Rarefied Gas Dynamics, RGD27
Y2 - 10 July 2011 through 15 July 2011
ER -