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Damage and Corrosion Behaviors of Military Green Organic Coatings |
Received:January 19, 2017 Revised:June 15, 2017 |
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DOI:10.7643/ issn.1672-9242.2017.06.007 |
KeyWord:vehicle equipment military green organic composite coating corrosion |
Author | Institution |
XU An-tao |
Military Transportation University, a. Military Vehicle Department, Tianjin , China |
ZHANG Rui |
Military Transportation University, b.Postgraduate Training Brigade, Tianjin , China |
ZHANG Zhen-nan |
Military Transportation University, b.Postgraduate Training Brigade, Tianjin , China |
SUN Bo |
Unit 96274, Luoyang , China |
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Abstract: |
Objective To study corrosion behavior of military green organic coating with different damage degree, and to determine influences of damage degree on its protective performance changes. Methods Electrochemical impedance spectroscopy (EIS) technique was applied to study electrochemical characteristics of military green organic coating under different damage degree which were made manually. Results According to electrochemical characteristics of military green coatings under different damage degree, four stages of the coating from good to bad were determined: initial intact stage (damage rate K≤0.0004%), increase damage stage (0.0016%<damage rate K≤0.04%), excessive breakage stage (0.16%<damage rate K≤1%) and failure stage (4%<damage rate K≤16%). Conclusion The damage rate K 0.04% is the turning point of the coating’s protective performance, when the damage rate K is more than 0.04%, the surface coating should be repaired and protected in time. |
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