|
| Research on Protective Performance of Organic Coatings for Military Vehicles Based on PSD Curve |
| Received:October 28, 2020 Revised:December 05, 2020 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2021.04.019 |
| KeyWord:coating corrosion electrochemical noise PSD |
| Author | Institution |
| ZHOU Hui |
Military Vehicle Engineering Department, Tianjin , China |
| XU An-tao |
Military Vehicle Engineering Department, Tianjin , China |
| FENG Hui-juan |
Military Vehicle Engineering Department, Tianjin , China |
| WEI Jun-yi |
Postgraduate Training Brigade, Fifth Team of Cadets, Army Military Transportation University, Tianjin , China |
|
| Hits: |
| Download times: |
| Abstract: |
| In order to study the anti-corrosion performance of organic coatings on two military vehicles, this paper takes two kinds of military vehicle's organic coatings as samples to carry out multi-factor comprehensive corrosion test with four environmental factors of damp heat, ultraviolet, neutral salt spray and acid salt spray. The experimental data are processed by electrochemical noise frequency domain analysis, and the anti-corrosion performance of the two coatings are compared and analyzed. After 10 cycles, both coatings are completely destroyed. Among them, the initial state of gray organic coating H is in 9.55×108 Ω/cm2, and after 9 cycles, it is reduced by two orders of magnitude to 1.3×106 Ω/cm2; the initial state of the metallic paint coating is 1.8×109 Ω/cm2, and after 9 cycles, it is reduced by 1 order of magnitude to 3.62×108 Ω/cm2. The change trend of curve slope Si is opposite to the noise intensity. When the corrosion rate is fast, the slope becomes smaller and the line is steeper on the image. Conversely, when the corrosion rate is slow, the slope becomes larger and the curve becomes more gentle. Therefore, the protective performance of metallic coating is better than that of gray organic coating. |
| Close |
|
|
|