What would happen if corrosion on an aircraft went unchecked?
If intergranular corrosion is left unchecked, exfoliation of the part will proceed. The part will actually start to peel like a shale rock until all the material’s integrity is gone. The only repair for a part that has intergranular corrosion, or exfoliation, is replacement of the part.
What is intergranular corrosion How will you minimize it?
Intergranular corrosion can be prevented through: Use low carbon (e.g. 304L, 316L) grade of stainless steels. Use stabilized grades alloyed with titanium (for example type 321) or niobium (for example type 347). They react with the carbon to form the corresponding carbides thereby preventing chromium depletion.
What is the most common type of corrosion on aircraft?
Surface corrosion
Surface corrosion: The most common type of aircraft corrosion, surface corrosion occurs when metal on the surface of an aircraft oxidizes, such as when paint wears away.
What is intergranular corrosion cracking?
Intergranular cracking is a form of corrosive attack that progresses preferentially along grain boundaries. Intergranular cracking is a result of local differences in the composition of a metal as a crack propagates along the grain boundaries of a material, usually where these grain boundaries are weakened.
How does intergranular corrosion work?
Corrosionpedia Explains Intergranular Corrosion (IGC) When an element adequate for the resistance of corrosion is lost, either from the boundary or the zone adjacent to it, it creates a condition where the spot becomes an anode with reference to the rest of the grain.
How does the corrosion affect the safety in an aircraft?
Corrosion weakens the structural integrity of a metal aircraft and its parts and can lead to expensive repairs and significant safety hazards. Left undetected and untreated, corrosion can make an aircraft unairworthy in just a matter of years.
What is an intergranular corrosion test?
Intergranular Corrosion (IGC) or Intergranular Attack (IGA), is an efficient test for screening a material’s corrosion resistance under certain conditions. Element’s intergranular corrosion testing helps reveal errors of batches that are incorrectly processed, and highlight any areas where updates are needed.
What are the effects of corrosion on aircraft?
1.9 The presence of corrosion in aircraft will lead to deterioration in the aircraft’s structure which may eventually lead to catastrophic failure.
Why we should prevent corrosion in aircraft?
Aircraft corrosion presents a constant threat to the structural integrity of aircraft and aircraft parts. Besides costing millions of dollars in aircraft inspections and repair work, corrosion can lead to massive safety risks if left untreated.