Corrosion Basics 1
Corrosion Basics 2
Cleaning 1
Cleaning 2
Miscellaneous
100

Occurs when two dissimilar metals make contact in the presence of an electrolyte. 

Galvanic

100

True or false, exhaust gasses are corrosive?

True
100

what is this 

Emery Cloth

100
Basic fuselage cleaning method

Soapy Water

100

How may intergranular corrosion be detected?

Eddy current or ultrasonic inspection

200

What happens when two materials fit tightly together but shift side to side while in contact.

Fretting

200


Exfoliating/ Inter / Intragranular Corrosion

200

How long should paint remover remain on the surface before it is washed off?

Enough time to wrinkle and completely lift the paint.

200
What do you NOT clean an aircraft window with 

Anything that will scratch the plastic
(microfiber, hard bristle brushes)

200

Where would corrosion most likely occur on an aircraft skin.

Around fasteners, lap joints, spot welds, and piano type hinges. 

300
One of the most destructive and intense forms of corrosion.

First noticeable as a white or gray powdery deposit.

Pitting

300
What do you do when an anodized film has been partially removed from an aluminum alloy surface.

Can be partially restored via chromic-acid solution.

300

How can parts made of Carbon or Alloy Steel be cleaned?

With buffers, wire brushes, sandblasting, steel wool, or abrasive papers. 

300

What is used to clean a surface just before painting

Aliphatic Naphtha

300

What is the difference between aromatic and aliphatic naphtha 

Aliphatic Naphtha is a petroleum product, and Aromatic Naphtha is a coal tar product. 
400

Other Names for General Surface Corrosion

Uniform Etch
or
Uniform Attack Corrosion

400

What replacement method is there for cables with internal corrosion?

None. Replace the section of cable.

400

What is important to remember when cleaning corrosion from Aluminum parts?

Do NOT use steel/wire brushes, steel wool, emery cloth, or other harsh abrasives.

They will damage the aluminum.

400

How do you clean rust on aluminum?

Rust doesn't form on aluminum.

400

Define Anodizing

Acid-plating process that hardens the surface, reduces porosity, increases abrasion resistance, and has high dielectric strength.

500
What are the 5 steps of Corrosion Control

Clean + strip corrosion, Clear all corrosion, Apply chemical cleaning, Apply corrosion resistant film, Apply paint

500

Define Alodizing.

Formation of a hard, airtight oxide coating on the surface of aluminum alloys by chemicals means. 

500

How do you keep the bilge area clean?

Keep it clear of extraneous materials including water and oil.

500

How do you clean a tire

Wipe it down and then wash with soapy water.

500

How often should seaplanes be checked for corrosion

Every Day