Corrosion resistance of aluminum alloys used in hydraulic construction

Abstract

Considerable expenditure is required to combat corrosion of steel hydraulic structures and equipment in rivers. Until recently, the chief method of suppressing such corrosion was the use of resistant enamels or paints. Owing to the considerable weights of equipment in hydroelectric power stations and the difficulties of dismantling, transportation and reassembly, any solution which will eliminate anticorrosive treatment of large items ofplantsmust be attractive. Extensive research has therefore been made into the possibility of electrochemically protecting submerged metal structures so as to dispense with time-consuming painting work. This method should be very popular for protecting steel components in hydraulic engineering structures.Construction engineers will be interested in techniques involving corrosion-resistant structural materials, especially aluminum alloys, with the aim of prolonging service life. Their high specific strengths and resistances enable such alloys to protect structures from corrosion and greatly reduce their weights; assembly is easier and hoisting facilities need not be so extensive. The present paper gives the results of a program of research at the Gipromorneft' Institute (Baku), aimed at correlating the mechanical and corrosion properties of aluminum alloys under conditions imposed by the average flow of the Volga at the V.

A Flexible and Wearable Human Stress Monitoring Patch

“…The skin temperature sensor and the skin conductance sensor life time is related with aluminum corrosion time. Aluminum corrosion rate 60 changes in the range of 0.06–0.7 μm/year according to surrounding environment. Thus, the skin temperature sensor and the skin conductance sensor life time is estimated in the range of 8–100 months, considering the 0.5 μm-thick electrodes.…”