Thursday 14 November 2013

Filiform Corrosion


Work continues on our Queen’s Flight Wessex this week. All contaminated areas have now been stripped and the vast majority of the rivet work and corrosion treatment has now been completed. As I mentioned before in my last post, the type of corrosion identified on this aircraft is filiform corrosion. I have had a number of people ask what this actually means. For the uninitiated I have found the following...so here it goes...

‘Symptoms: Corrosion occurring beneath paint in the form of random threadlike filaments. Often causes paint bulging as blisters.’


‘Causes: Moisture and corrosive agents that reach the metal through cracks or damage in the paint and set up active corrosion cells. Particularly severe in high humidity, marine and industrially polluted environments.’  

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