Material Science- Corrosion is one of the processes that affectsthe reliability of all engineering components. It is verycomplicated process and many factors are affecting it. However,when it comes to the fundamentals, it is not as complicated as onethink. Basically, corrosion occurs in metals and their alloysbecause they are with electrons that are not saturated in bondstates. Because of this, the work function plays a critical role indetermining the corrosion susceptibility of metallic materials.

1) Alternate way of presenting corrosion susceptibility ofmetals is to compare standard chemical potential of electrons inmetals or standard half cell voltage of metals. What is thestandard chemical potential of electronics and the standardhalf-cell voltage? Can you prepare table showing the a fewelemental metals and their standard chemical potential as well ashalf-cell potential?

2) The standard half-cell voltage does indicate whether materialin your hand is corrosion prone or not. However, there are a fewexceptions on this such as Cr and Al. In case of Cr, its potentialis very much in the negative range but is very good at withstandingcorrosion (that is a basis of stainless steel). Briefly explain whythis is the case.

3) The worst form of corrosion failure is the Galvaniccorrosion. Explain what it is and why it is so problematic for thecomponent reliability.

4) Crevice corrosion can be analyzed in the frame work ofGalvanic corrosion even if there is no obvious component that cancreate Galvanic couple with your piece. Briefly explain what typeof condition can make Crevice corrosion to be similar to Galvaniccorrosion.