Showing papers on "Friction modifier published in 1976"

Friction and wear with lubrication by the products of the thermo-oxidative destruction of polyethylene

Abstract: Results are given of a study of the friction and wear processes when the products of the rmooxidative destruction of polyethylene are used as a solid lubricant and modifying agent. It is established that their physicochemical properties provide a very low coefficient of friction and wear in metal-electronegative-polymer pairs.

Certain aspects of friction between natural polymers and metal

Abstract: It is shown, on the basis of test data, that one of the most likely processes responsible for the adhesive characteristics of a friction contact between metal and wood is the formation of compounds containing the metal, namely, compounds between metal oxides and active groups within the lignocarbon complex in wood (hydroxyl groups, for example) with an electropositive hydrogen atom. The correlation established here between the molecular component of the friction coefficient, the change in OH groups, and the moisture absorption level in wood yields criteria for selecting the filler materials which will ensure, during friction, that the positive gradients of resistance to shear become localized and that stable boundary layers form within the contact zone.

Friction materials containing spinel solid solution as friction modifier

Abstract: Friction material adapted for use, for example, as a brake lining is disclosed characterized in that the material contains in particulate form a crystalline mineral friction modifier of an isomorphous substitutional solid solution consisting essentially of atoms of metals and oxygen arranged as a mixed crystal in a normal spinel crystal lattice structure. There are at least three different metal atoms present in the crystal lattice, the total number of metal atoms having a total valence charge sufficient to maintain electrical neutrality. The friction material may be conventionally supported as by a shoe or disc.