Polarisability factors affecting

The extent of galvanic effects will be influenced by, in addition to the usual factors that affect corrosion of a single metal, the potential relationships of the metals involved, their polarisation characteristics, the relative areas of anode and cathode, and the internal and external resistances in the galvanic circuit (see Section 1.7). 

Its lower limit is of the order of E-ll s. for small molecules and, often, of the order of E-2 to E+4 s. for polymers at room temperature. Since this orientation polarisability, aro, involves physical movement of parts of the macromolecules it is not surprising that, apart from the temperature, other factors which determine the molecular mobility affect it. 

Factors that affect the ammonia formalion rate in the membrane reactor can be concluded as follows It is dependent on electrode materials, electrode polarisation, volumetric flow rates of gaseous N2, operating temperature, and the presence of poisoning gases, H2O, and O2 at the cathode. Information for some factors is described in brief below. 

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