Abstract
The fatigue failure of metals begins, as a rule, at the surface as a result of physicochemical processes that take place under the influence of the moisture and oxygen in the air. It is known that even the ordinary laboratory atmosphere may have a harmful effect on the fatigue resistance of aluminum alloys [i]. In a number of cases thin, ultimately monomolecular, water-repellent films of organic substances may act as an effective barrier against the adsorption of water and oxygen molecules from the atomosphere on the metal surface [2-5]. In this connection investigations have been carried out on octyl and dodecyl alcohols and dodecyl and octadecyl amines, among polar substances. In a study of the endurance of a number of metals (steel 4340, a beryllium alloy, aluminium alloy 6061-T6, and stainless steel 17-7RN), it has been found [2] that after the application of a film of dodecyl alcohol to their surface the limited endurance of these materials increases By 2.5 times.
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