Aluminum oxide rheology

Systems comprising binary or tertiary surfactant mixtures or polymers deliver greater flexibility with higher viscosity values (from 10 cps to several thousand) and a better control of the viscosity stability over longer pmod of time. Colloidal suspensions of clay or of aluminum oxide seem to be the preferred route to generate aqueous gels with more complex rheological behavior. 

Even insignihcant alterations of the polarization potential noticeably affect friction of the support. The cathodic polarization occurring on connection of the aluminum electrode of the M1-P-M2 system prolongs pendulum oscillations compared to anodic polarization. These patterns are affected by the electrical polarization, which changes the rheological properties of the oxide layers and secondary structures formed on the surface of metal parts in the conducting media. The shift of the oxide potential to that of the electrode of a cleaned metal is probably the reason for plastic deformation of the surface... 

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