Journal
TRIBOLOGY INTERNATIONAL
Volume 94, Issue -, Pages 20-25Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2015.08.005
Keywords
Viscosity; Boundary slip; Ultra shear rheometer; Friction reduction
Categories
Funding
- National Basic Research Program of China [2012CB934101]
- National Natural Science Foundation of China [51323006]
Ask authors/readers for more resources
A novel rheometer with the maximum shear rate of 10(5) s(-1) has been fabricated to measure lubricant viscosity and to detect solid/liquid boundary slip. The gap between two parallel plates is controlled in the range from 20 to 500 mu m and the viscous shear torque is measured with a feed-backed laser reflection technique. Test results of the perfluoropolyethers (PFPE) coated sample indicated that the viscous shear resistance is reduced by about 15-20% compared with the bare plate, implying that possible boundary slip occurred at the liquid/solid interface and a slip length of order 10 gm was extrapolated. (C) 2015 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available