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Materials Science

In: Computers and Technology

Submitted By drewbkell
Words 253
Pages 2
Drew Kelly
IET 307
HW5
Dr. Nair

1)

2)

3)

4) I speculate that the type of corrosion was called Hydrogen Embrittlement. Various metal alloys, specifically some steels, experience a reduction in ductility and tensile strength when atomic hydrogen penetrates into the material. Basically it is a type of failure, the brittle fracture occurs as the cracks grow and rapidly propagate. HE is very similar to stress corrosion in that a normally ductile metal is exposed to a stress and a corrosive atmosphere. For HE to occur some source of Hydrogen has to be present and also there must be a possibility of formation of its atomic species. High strength steels are very susceptible to HE and increasing the materials strength tends to enhance the chance the material can become HE. This form seems to fit the applied situation. 5) Yes it is possible to have reinforced steel bars that can corrode while still inside the concrete. Another perfect example of this is, as mentioned in the above answer, is Hydrogen Embrittlement. Again He is when a hydrogen atom gets inside the material and causes it to corrode, a good way to prevent the chances of corrosion are to add in inhibitors. Inhibitors are substances that when added at low concentrations that can prevent corrosion. Another way you can prevent corrosion is called Cathodic Protection. This is when you apply an external source, electrons to the metal, making it a cathode. Then the action of corroding is put in reverse or reduction.

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