Flashcards in NAVAIR 01-1A-509-1, Ch. 3 Deck (68)
Aluminum and magnesium form corrosion products that are white oxides or what else?
What is the most common type of corrosion (and the one that can be most effectively treated by maintenance personnel)?
What is the smallest unit of an element, made up of a positively charged nucleus surrounded by a system of negatively charged electrons?
There are over how many elements?
What is a negatively charged subatomic particle called?
What cannot move through metal conductors?
What is a liquid (usually water) solution containing ions called?
Which branch of science is concerned with chemical reactions at surfaces in contact with electrolytes?
How many conditions must exist before metal corrosion can occur?
What is corroding metal called?
When corrosion products form, they often precipitate onto the corroding surface as a what?
Since corrosion products occupy more volume than the original metal, the paint surfaces may become blistered, flaked, chipped, or appear in which way?
Which stage is the best time to prevent corrosion?
Aluminum, steel, titanium, along with which other type of metal are the most commonly used in aircraft construction?
Most alloys are made up entirely of small crystalline regions called what?
Which form of corrosion are many alloys used in aircraft construction sensitive to?
Stress corrosion cracking
Which type of corrosion is probably the most common type?
Which type of corrosion occurs when different metals are in contact with each other and an electrolyte?
What is a form of extremely localized attack that results in holes in the metal?
Which type of metals are most susceptible to pitting damage?
Which type of corrosion is an attack on the grain boundaries of the metal?
What is an advanced form of intergranular corrosion where the surface grains of a metal are lifted up by the force of expanding corrosion products occurring at the grain boundaries?
Which type of corrosion occurs because the environment of the local area is very different from the larger environment?
Which type of corrosion is a form of crevice corrosion which occurs on metal surfaces having a thin (~4 mils) organic protective coating?
Filiform corrosion occurs when the relative humidity of the air is between 65- 90%, and the air temperature is between which temperatures?
Which type of corrosion is the increase in the rate of attack on a metal due to the action of a corrosive fluid against the metal surface?
Which type of corrosion is the intergranular or transgranular cracking of a metal caused by the combined effects of constant tensile stress (internal or applied) and corrosion?
Aluminum alloy can fail by stress corrosion cracking when subjected to a stress which is only what percent of its rated strength?
What is the cracking of metals known as that is caused by the combined effects of cyclic stress and corrosion?