Achievements in research on rubber wear by the present author and his group over the past ten years are summarized briefly. These results include mechanisms and wear equations for dry and wet abrasion, basic features and wear mechanism of oily abrasion, theory of dry abrasion by a line contact, physical processes and surface mechanochemical effects of abrasive erosion. They are not only significant in the context of rubber tribology but are also valuable for extending the working life of rubber components.
PR Chli ~r iThe structure and the nano-friction behaviour of a new kind of ultrathin film, a molecular deposition (MD) film, on a n Au substrate were studied. The MD film is formed by the electrostatic attraction between opposite charges of cationic and anionic compounds, and a multilayer film can be built thi{as.:ji dternating deposition of bipolar cationic and anionic compounds. Monolayer, bilayer, trilayer, and tetralayer MD films on Au substrates were examined. MD films with a n alkyl terminal group were also investigated. It was found that while the MD film on a n Au substrate reduced the friction, its nano-friction behaviour was unstable because of the active terminal group.However, if the MD film was formed with a n alkyl terminal group, its nano-friction behaviour became stable and its friction decreased markedly. Therefore, this film termination method could contribute to the nano-tribological application of MD films.
Abstract
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