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9 Cards in this Set
- Front
- Back
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What is it |
-Corrosion program and theory |
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What promotes corrosion |
-environments -temp change -pressure change -humidity variation -dust, dirt -UV light -aircraft fluids |
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Purpose |
-provide info on materials and procedures to prevent, control, and repair corrosion |
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Corrosion prevention philosophy |
-all hands responsibility -assume corrosion is on-going -eliminate factors that cause corrision |
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2 most important factors in prevention |
-removal of electrolyte -application of protective coating |
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Ion |
-atom or group of atom which has a net electric charge due to the gain or loss of an electron |
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Electrolyte |
-a liquid containing ions -ex. Seawater |
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Theory of corrision (how it works) |
-a metal loses electrons and becomes positively charged -in a solution, the positive metal ions combine with negative ions to form corrosion, such as metallic chlorides, oxides, sulfides |
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4 conditions for corrision |
-(anode) metal which has tendency to corrode -(cathode) dissimilar which has less tendency to corrode than the anode -(Electrolyte) conductive liquid inbetween anode and cathode -electrical contact between anode and cathode so electrons can move between |
