Interaction of hydrous dispersed mixtures with the metal surface

Building Materials

The basic regularity of ceramic on metal surface friction process was ascertained on the base of experimental research. A mathematical expression which considered nonlinear dependence of friction principle was developed. The process of wear of metallic surfaces under the effect of a ceramic mass has been studied experimentally. An equation that relates the parameters of wear with moisture ceramic mixture. The coefficient of proportionality in the equation is the criterion of compatibility of materials in the friction system, it becomes minimum (the least wear) when the combination of materials is optimal. It is shown that friction of mineral dispersed systems on a metal produces an electrical effect, such as appearance of an electromotive force (friction-EMF) that is capable to maintain current in an external circuit as long as friction continues. The results of studies of electrization of dispersed systems show how influence various factors on this process. Discovered the effect of unilateral conductivity of the boundary layer during sliding friction. Based on the analysis of possible causes of electrization of dispersed systems during friction a hypothesis is advanced explaining this process by emission of cations from the counterbody metal due to a drop of the potential energy of ions in a structurally ordered boundary layer and a rise of the kinetic energy of cations in the metallic lattice as a result of collisions with atoms of the dispersed phase. It is shown that during friction ceramic mixture is released latent heat. This heat is not a dissipative process, but is associated with the reduction internal energy as a result of self-organization the structure.