A composite coating of polytetrafluoroethylene and epoxy shows 100 · improvements in wear resistance as compared to either of its constituents alone and reduced friction coefficient under testing on a pin-on-disk tribometer. This coating is made by impregnating an expanded PTFE film with epoxy, which provides three unique functions: (1) the epoxy compartmentalizes the PTFE nodes, which is belie...

Submitted for the MAR05 Meeting of The American Physical Society Preparation and Friction Property of Dendritic Thin Film QING ZHANG, LYNDEN ARCHER, Cornell University — To investigate the effect of film structure on their friction properties, thin films with dendritic structure were prepared on silicon surfaces by step-growth propagation, and their friction properties were studied by AFM. The ...

We present in this article the study on decay estimates for solutions of Cauchy problem a class linear ‐evolution equations with unbounded coefficients space dimension , where coefficient is continuous and satisfying asymptotic behavior as parameter positive bounded function. By investigating diffusion phenomenon, we obtain new results that generalize our previous damped wave models constant ne...

The influence of non-uniform slot suction (injection) into a steady, MHD boundary layer flow over a sphere with variable viscosity has been examined. The system of nonlinear, coupled partial differential equations governing the non-similar flow have been solved numerically and the solutions have been obtained from the starting point of the streamwise co-ordinate to the exact point of separation...