Study on Fitting Equation of High Temperature Corrosion Kinetics Curve of Nano Fe-Al/Cr3C2 Composite Coating
Nano composite coatings,due to their excellent corrosion resistance,will provide important technical guarantees for the construction and safe and stable delivery of new energy bases in Inner Mongolia areas.Nano intermetallic compound Fe-Al/Cr3C2 composite coatings are made and high-temperature corrosion resistance properties are test.The fitting equations of kinetics curves of different types of high temperature corrosion are compared and the best fitting equations are selected.Highly active nano Fe-Al/Cr3C2 composite spraying materials are successfully made through the agglomerated pelletization system developed independently by ourselves.By high velocity flame spraying,five groups of Fe-Al/Cr3C2 composite coatings containing different mass percentages are prepared on the surface of structural materials by High-Speed Flame Spraying method.The high-temperature corrosion resistance of the five groups of Fe-Al/Cr3C2 composite coatings are compared and tested.The corrosion kinetics curves are fitted by parabola and power function respectively.The corrosion rate of each composite coating can be calculated by derivation of the corrosion kinetics fitting equation.The results show that high temperature corrosion resistance of nano-coatings is significantly higher than that of other Fe-Al/Cr3C2 composite coatings,and the fitting effect of the corrosion kinetics curve is better by using the power function equation.
electric equipmentshigh temperature corrosionnanoFe-Al/Cr3C2composite coatingfitting equation
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