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corrosion
identifying corrosion
Term | Definition |
---|---|
corrosion | corrosion is the electrochemical deterioration of a material or its properties due to its chemical reaction with the surrounding environment |
Galvanic Corrosion | occurs when different metals are in contact with each other and an electrode such as sea water |
Pitting | usually first noticeable as a white or gray powdery deposit, similar to dust, which blotches the surface |
Intergranualar corrosion | is an attack on the grain boundaries of the metal |
nickel corrosion | Green powdery deposit |
What type of corrosion is probably the most common type of corrosion? | Uniform surface corrosion |
In order to prevent corrosion there must be a constant cycle of what four activities? | Cleaning, Inspections, Operational preservation and lubrication |
Filiform corrosion occurs on what types of metals? | Steel, Aluminum and magnesium |
What type of metal is used as protective plating on aircrafts? | Chromium |
Erosion Corrosion | Accelerated attack of a metal due to the relative movement between a fluid and the metal surface. |
Fretting | Corrosion which occurs at the interface of two mating surfaces, under load and subjected to vibration and slip. The relative motion between the two surfaces is extremely small |
Uniform Surface Corrosion | Corrosive etching of metal involving only the surface. |
Magnesium Corrosion | white powdery snow-like mounds |
steel corrosion | red rust |
aluminum corrosion | pitting |