Results 241 to 250 of about 3,631,519 (286)

Water lubrication of PTFE composites

Industrial Lubrication and Tribology, 2015
Purpose– The paper aims to present results on the friction and the wear of polytetrafluoroethylene (PTFE) and eight commercially available composites with PTFE matrix, for tests done on shoe/roller tribotester with water lubrication in open circuit. There are pointed out particular tribological processes within the superficial layers of the composites ...
Lorena Deleanu, Constantin Georgescu
openaire   +1 more source

Insight into water lubrication performance of polyetheretherketone

Journal of Applied Polymer Science, 2020
AbstractPolyetheretherketone (PEEK) is a kind of polymer with excellent mechanical properties combined with good wear resistance and has been widely used in the engineering field. In order to explore the possibility for PEEK using as a water‐lubricated bearing material, an in‐depth study on the water lubrication performance of PEEK was conducted by ...
Zumin Wu, Zhiwei Guo, Chengqing Yuan
openaire   +1 more source

Water lubricates hydrogen-bonded molecular machines

Nature Chemistry, 2013
The mechanical behaviour of molecular machines differs greatly from that of their macroscopic counterparts. This applies particularly when considering concepts such as friction and lubrication, which are key to optimizing the operation of macroscopic machinery.
Panman, M.R., Bakker, B.H., den Uyl, D., Kay, E.R., Leigh, D.A., Buma, W.J., Brouwer, A.M., Geenevasen, J.A.J., Woutersen, S.   +8 more
openaire   +5 more sources

Steam and Water Lubrication of Quasicrystalline Films

Tribology Letters, 2004
The present work reports on the comparison of tribological properties between quasicrystalline and approximant films under steam and water lubrication. These films have nearly the same stoichiometry, which allows evaluation of the quasicrystalline structure as compared with the crystalline structure of the approximant.
B.S. Phillips, J.S. Zabinski
openaire   +1 more source

Water Lubrication of Silicon Nitride in Sliding

Tribology Letters, 2004
Several studies have shown that the coefficient of friction of self-mated silicon nitride in water decreases from an initially high value to about 0.002 after a certain run-in period. Since the worn surfaces become extremely smooth, the low friction is attributed to the initiation of hydrodynamic lubrication by a thin water film at the interface.
S. Jahanmir, Y. Ozmen, L.K. Ives
openaire   +1 more source

Water lubrication of phenolic bearings

Scientific Lubrication, 1949
PHENOLIC bearings have frequently been used P for roll mills, thrust collars and rings, lifter bearings, side bearings on brass mills, plate mills and sheet mills, etc. They have sometimes replaced lignum vitae for marine propellor shaft bearings. Their lubrication can be effectively accomplished with water which, obviously, is the best coolant.
openaire   +1 more source

Lubricant Inertia in Water Lubricated Bearings

Volume 1A, Symposia: Keynotes; Advances in Numerical Modeling for Turbomachinery Flow Optimization; Fluid Machinery; Industrial and Environmental Applications of Fluid Mechanics; Pumping Machinery, 2017
Oil-lubricated bearings are widely used in high speed rotating machines such as those used in the aerospace and automotive industries. However, with some applications including underwater machinery and environmentally friendly applications, water lubricated bearings have become increasingly used.
Xin Deng, Cori Watson, Brian Weaver, Houston Wood, Roger Fittro   +4 more
openaire   +1 more source

Wear of water-lubricated composite materials

Wear, 1980
Abstract The wear properties of several commercial composite materials on stainless steel in the presence of water were examined. Particular care was taken to ensure that the conditions of the friction process were characteristic of the boundary lubrication regime.
openaire   +1 more source

Water-Lubricated Soft-Rubber Bearings

Journal of Fluids Engineering, 1932
Abstract Rubber bearings lubricated with water are found to have remarkably low coefficients of friction and to give excellent service under many conditions. The softness of the rubber makes these bearings stand up in the presence of sand and grit, and it also makes the laws of lubrication governing these bearings differ from the ...
W. F. Busse, W. H. Denton
openaire   +1 more source

The specific features of the blood stains on the water-lubricated surfaces

Sudebno-meditsinskaya ekspertiza, 2017
The objective of the present study was the experimental investigation of the morphological characteristics of the 20 mcl blood droplets which freely fell down onto the surfaces that were either dry or moderately and profusely lubricated with water. The morphological properties of the resulting blood stains on the glass surfaces, dry or moderately and ...
M N, Nagornov, E N, Leonova, A S, Kucha
openaire   +2 more sources