AM.I.G.S3
SkillApply corrosion prevention/coating materials.
From the FAA library
- Chapter 8: Cleaning & Corrosion Control › Galvanic Corrosion › Common Corrosive Agents
Galvanic Corrosion Galvanic corrosion occurs when two dissimilar metals make electrical contact in the presence of an electrolyte. [Figure 8-18] The rate which corrosion occurs depends on the difference in the activities. The greater the difference in activity ... faster corrosion occurs. The rate of galvanic corrosion also depends on the size of the parts in contact. If the surface area of the corroding metal is smaller than the surface area of the less active metal, corrosion is rapid…
- Chapter 8: Cleaning & Corrosion Control › Corrosion of Aluminum & Aluminum Alloys
some cases, the corrosion products of metal in contact with aluminum are corrosive to aluminum. Therefore, aluminum and its alloys must be cleaned and protected. Corrosion on aluminum surfaces is usually quite obvious, since the products of corrosion are white ... generally more voluminous than the original base metal. Even in its early stages, aluminum corrosion is evident as general etching, pitting, or roughness of the aluminum surfaces. NOTE: Aluminum alloys commonly form a smooth surface oxidation that is from…
- Chapter 8: Cleaning & Corrosion Control › Corrosion of Ferrous Metals › Removal of Corrosion from Highly Stressed Steel Parts
Removal of Corrosion from Highly Stressed Steel Parts Any corrosion on the surface of a highly-stressed steel part is potentially dangerous, and the careful removal of corrosion products is required. Surface scratches or change in surface structure from overheating ... also cause sudden failure of these parts. Corrosion products must be removed by careful processing, using mild abrasive papers, such as rouge or fine grit aluminum oxide or fine buffing compounds on cloth buffing wheels. Nonwoven abrasive pads can also…