galvanic anode

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sacrificial anode

A metal plate used in cathodic protection (i.e., the protection from corrosion) of piping or other equipment to which it is electrically connected. This metal plate must be more corrodible than the piping to which it is attached.
References in periodicals archive ?
Three commercial magnesium alloys for galvanic anodes were characterized by chemical analysis, electrochemical testing and microscopy inspection.
If galvanic anodes are used for cathodic protection in an area of AC influence and if test stations are available, the following tests should be conducted during each pipeline corrosion survey using suitable instrumentation: a) Measure and record both the AC and DC currents from the anodes, b) Measure and record the AC & DC pipe-to-soil potentials.
These readings include 258 rectifiers in two states and all galvanic anode systems.
The two most common galvanic anode materials used for pipeline corrosion control are zinc and magnesium.
Creation, total or partial renewal of the cathodic protection structures below: - weirs - drainage station - racking station - potential-taking, electrical connections - galvanic anodes, batteries.
Sacrificial galvanic anodes are used to control corrosion on steel gas distribution lines.
Among specific topics are a local regular dual reciprocity method for a two dimensional convection-diffusion equation, a coupling strategy between the boundary element methods and Kansa's method for acoustic analysis of heterogeneous media, a least squares solution applied to plate analysis using the traction boundary integral equation, the boundary element analysis of deformation and movement of a capsule and a red blood cell close to the wall, three-dimensional acoustic simulation inside closed rooms bounded by non-parallel floor and ceiling surfaces, and calculating the protective current density distribution of a cathode protection system with galvanic anodes in terms of double-layer electrolyte.
Galvanic anodes and impressed current rectifiers have been employed to perform this task for many years.
Repairs using low shrinkage Mapegrout mortars can be further enhanced by the use of Mapeshield galvanic anodes.
The use of sacrificial embedded galvanic anodes to manage the corrosion of steel reinforcement is becoming more common, says Sprinkel.