| GUAN Zhen-wei,ZHANG Yu-zhong,ZHOU Kai,LI Jing.Preparation and Property of Inorganic-Organic Hybrid Nano-coatings for Thermal Shock and Anti-corrosion Protection[J],47(5):172-176 |
| Preparation and Property of Inorganic-Organic Hybrid Nano-coatings for Thermal Shock and Anti-corrosion Protection |
| Received:December 25, 2017 Revised:May 20, 2018 |
| View Full Text View/Add Comment Download reader |
| DOI：10.16490/j.cnki.issn.1001-3660.2018.05.026 |
| KeyWord:inorganic/organic hybrid coating nano fillers anti-corrosion coatings electron-beam welding thermal shock waterborne coating |
| Author | Institution |
| GUAN Zhen-wei |
Beijing Institution of Aeroplane Materials, Beijing , China |
| ZHANG Yu-zhong |
Beijing Institution of Aeroplane Materials, Beijing , China |
| ZHOU Kai |
Harbin Dongan Engine Group Co., Ltd, Harbin , China |
| LI Jing |
Beijing Institution of Aeroplane Materials, Beijing , China |
|
| Hits: |
| Download times: |
| Abstract: |
| The work aims to fabricate hybrid coatings for thermal shock and anti-corrosion protection. The anti-corrosion thermal shock protection coatings were prepared by taking inorganic silicate and organic silicone emulsion as binder and nano Zirconium oxide dispersions and aluminium pastes as thermal pigments and mixing anti-corrosion pigments and additives. SEM, salt spray test, thermal test, and electron-beam welding (EBW) test were respectively taken to evaluate morphology, corrosion resistance for high-strength alloy steel, long term thermal resistance and flash thermal shock properties. Relationship between corrosion and thermal resistance was studied and compared by adjusting ratio of inorganic resin and organic resin. With pure inorganic resin as binder, the thermal resistance of coatings was up to 700 ℃, but the anticorrosion was poor and the salt spray resistance time was less than 24 h. With pure organic resin as binder, the thermal resistance of coatings was up to 400 ℃ and the salt spray resistance time was more than 336 h. For hybrid nano-coatings prepared by inorganic/organic mass in ratio of 2:1, the thermal resistance was up to 700 ℃ and salt spray resistance time was 168 h, Nano-filler was dispersed in the coating when added with dispersion liquid as carrier. Ceramic filler was still in binder in nanoscale after film formation. The thermal shock resistance was improved dramatically and the coating morphology was complete after the thermal shock of electron beam welding. Anticorrosion performance and thermal resistance of coatings can be improved and maintained by choosing appropriate inorganic/organic resin ratio. The thermal shock protection can be strengthened by adding nano Zironium oxide in dispersion liquid. Such coatings can be used in protection of high-tensile steel under EBW. |
| Close |
|
|
|