... and smooth after braking if no squealing occurred. Sherif [ 17 ] introduced an index to establish the relationship between brake noise and surface morphology. The index was a function of the ratio of the standard deviations of the height distribution of asperities to the mean radius of the asperities...

...) In order to reveal the role of the borate esters C x BN additives in the friction process, the surface morphologies of the wear scar tested on four-ball machine (200 N and 30 min) were observed using a scanning electron microscope. Figure 6 shows the SEM micrographs of the wear scar lubricated...

... threshold energy of impacting particles at which a transition in erosion rate is noticed for sizes of 200 μ m . It is also observed that the erosion rate increases with the increase in shape factors (aspect ratio and circularity factor). The surface morphology of the eroded surface at impact of 30 deg shows...

... generated on the surface of mating pair is likely responsible for the lower wear rate observed in these experiments. field emission electron microscopy filled polymers friction graphite nanocomposites scanning electron microscopy surface morphology wear resistance Polytetrafluoroethylene...

... fatigue aluminium austenitic stainless steel brass fatigue impact (mechanical) shock wave effects surface morphology wear 30 07 2008 28 12 2008 10 06 2009 2009 American Society of Mechanical Engineers ...

... in closed systems. Systematic observations of disloged particles and eroded surface morphology show that the dominant failure mode in cavitation erosion is fatigue. aluminium fatigue surface morphology wear cavitation erosion erosion particles characterization of particles erosion mechanisms...

...-surface morphology using a molecular-probe scanning method. We found that the film-surface morphology changed periodically with increasing film thickness. The monolayer of a polar lubricant that entirely covers the solid surface provides a flat lubricant surface by exposing its nonpolar backbone outside...

... at 975°C and rolling enhanced the particle breaking. Atomic force microscopy scans showing worn surface morphologies of the samples borided at: (a) 800°C, 4 h ; (b) 875°C, 4 h ; and (c) 950°C, 4 h The direct observation of the temperature effects on borided...

...-coated specimens were tested under a wide range of temperature conditions, from room temperature up to 400 ° C , using a high temperature pin-on-disk tribo-tester. After that, the wear-tested specimens were analyzed using SEM with EDS to characterize the worn surfaces. Morphological changes of the DLC...

.... , 1987 , “ Single Point Deformation and Abrasion of γ-Irradiated Poly(tetrafluoroethylene) ,” J. Phys. D 0022-3727 , 20 , pp. 346 – 353 . 19 07 2005 27 06 2006 abrasion nanotechnology amorphous state crystal orientation indentation atomic force microscopy surface...

... activation energy ( 7 kcal ∕ mol ) . 19 08 2004 05 05 2005 polymers lubrication lubricating oils friction wear wear testing scanning electron microscopy X-ray chemical analysis Fourier transform spectra infrared spectra wetting surface morphology protective...

... especially when used in parallel with macro-scale friction and film thickness measurements. molybdenum compounds zinc compounds polymers lubricants additives organic compounds liquid films sliding friction wear resistance surface treatment surface morphology viscosity atomic force microscopy...

... characteristics because these microbearings use the sidewall (110 plane) as a working surface. A special micro wear tester and friction tester were developed. Surface morphologies of new and worn bearing surfaces were studied using SEM. Raman spectroscopy and X-ray photoelectron spectroscopy (XPS) characterized...

... alloys tantalum alloys superalloys grinding adhesion surface morphology failure (mechanical) abrasives lubrication Wheel Loading Alloy Adhesion Deposition Mechanism Water-Based Grinding Fluids Cubic Boron Nitride (CBN) Electroplated Grinding Wheels Creep feed grinding...