Tribological Properties of Multifilament Aluminum Oxide Yarns on Contact with Submicro Rough Surfaces

Resumo

The tribological properties of multifilament aluminum oxide yarns were studied during frictional contact with submicro rough surfaces with known statistical roughness parameters. The tangential drag coefficient largely depends on roughness isotropy of the contact surfaces, the relative position of the asperities of the contacting surfaces and the nature of wetting of the surfaces with a sizing emulsion. The stability of the friction coefficient in the experiments of the first series with the arrangement of the yarns in the direction of sliding of the counterpart is higher than for the experiments of the second series when the yarns are at a 90° angle to the direction of sliding of the counterpart.