Characterization of rare earth corrosion inhibition mechanisms

3 Characterization of rare earth corrosion inhibition mechanisms 

This section looks at some of the experimental results related to immersion performance testing for the various rare earths and finishes with some surface studies that provide some insight into the corrosion inhibition delivered by exposure to rare earths. 

2 Comparative performance of selected rare earth compounds in weight loss experiments where AA7075-T6 was immersed in 0.1 M NaCI with lOOOppm of inhibitor (unless otherwise specified) (Hinton et alF ). 

Rare earth Concentration range Al-alloy (reference)  

The inhibition derived from the rare earth salts is primarily related to stifling the oxygen reduetion reaetion by deposition of rare earth hydroxides onto active cathodes.The most basic explanation of this effect is that the deposition proceeds in the presence of the local pH rise at the surface of active cathodes according to  

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