Materials Science Questions

A primary reason why ordinary or otherwise non-approved cleaningcompounds should not be used when washing aircraft is because their usecan result in

Why is it important not to rotate the crankshaft after the corrosion preventive mixture has been put into the cylinders on engines prepared for storage?

During what chemical action is metal united with oxygen and is considered adry corrosion?

(1) In the corrosion process, it is the cathodic area or dissimilar cathodic material that corrodes.(2) In the Galvanic or Electro-Chemical Series for metals, the most anodic metals are those that will give up electrons most easily.Regarding the above statements, which is/are true?

When an anodized surface coating is damaged in service, it can be partially restored by....

Which of these materials is the most anodic?Cadmium.7075-T6 aluminum alloy.Magnesium.

Select the solvent used to clean acrylics and rubber.

An electrochemical process in which a metal is transformed into a chemicalcompound (returns to it's natural state) that generally has little strength iscalled

Oxygen concentration cell corrosion forms in (____) areas.

Concentration cell corrosion can occur at a joint of two metals even thoughthe two metals are the same material.

Corrosion must never be removed from aluminum with steel brushes or with (____).

Select the solvent recommended for wipedown of cleaned surfaces just before painting.Aliphatic naptha.Dry-cleaning solvent.Aromatic naptha.

Formation of corrosion along the grain boundaries within an alloy is what type of corrosion?

From the choices below, (____) is the most vulnerable metal to corrosive attack from salt solutions.

Caustic cleaning products used on aluminum structures have the effect of producing....

What may be used to remove corrosion from highly stressed steel surfaces?

Which of these materials is the most anodic?

Corrosion caused by two close fitting parts with relative motion between thetwo parts (rubbing).

The interior surface of sealed structural steel tubing would be best protected against corrosion by which of the following?A: Charging the tubing with dry nitrogen prior to sealing.B: Evacuating moisture from the tubing before sealing.C: A coating of linseed oil

Stiff wire brushes can be used to clean corrosion off of magnesium.