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| Fabrication and Evaluation of an Organic Coating for Anti-scouring and Anti-corrosion Application on Compressor Blades |
| Received:March 08, 2021 Revised:April 19, 2021 |
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| DOI：10.7643/issn.1672-9242.2021.06.006 |
| KeyWord:compressor blades organic coating amino modify scouring resistance corrosion resistance |
| Author | Institution |
| GUANZhen-wei |
Beijing Institute of Aeronautical Materials, Beijing , China |
| LI Jing |
Beijing Institute of Aeronautical Materials, Beijing , China |
| ZHANG Yu-zhong |
Beijing Institute of Aeronautical Materials, Beijing , China |
| TIAN Yong |
Beijing Institute of Aeronautical Materials, Beijing , China |
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| Abstract: |
| To improve the scouring and corrosion resistance of organic coating on compressor blades, in this paper, hard Al2O3 fillers with other coloring and rust-prevent pigments were dispersed in amino modified epoxy resin. Pendulum hardness, abrasion test, scouring test, corrosion display and mechanical test were taken to value the properties of the organic coatings. It shows that the addition with Al2O3 fillers was effectively strengthened on hardness, abrasion and scouring resistance, which peaked when amount was 15%wt(mass fraction). Such coating showed 0.92 pendulum hardness, breakdown time of 475 s in room temperature and 385 s in high temperature, and its properties improved by 300% compared with the blank coating. Nevertheless, morphology and roughness were influenced with further addition of Al2O3, thus lowered pendulum hardness and breakdown time, while abrasion resistance was increasing still. Hence, it is the pendulum hardness of coatings that actual scouring properties relies on rather than conventional abrasive test. The anti-scouring and anti-corrosion organic coatings fabricated achieved good general performance and superior corrosion resistance compared with traditional aluminized inorganic layer. |
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