Smart polymer nanocomposite water and oil repellent coatings for aluminum

Bayer, Ilker S.

doi:10.1533/9780857096883.3.510

Cited by 1 publication

(1 citation statement)

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“…Elemental maps of AA-7475 show a high concentration (>99%) of Al, although there are also trace amounts of Mg and Si and Fe, and Cu, as well as other elements. The alloying ingredients in AA-7475 are thought to be responsible for the trace element presence [36]. PVC matrix constituents C, O, and Cl can be seen on the surface of AA-7475 coated with PNC-5 (Figure 5(d)).…”

Section: Resultsmentioning

confidence: 99%

Characterization and Superhydrophobic Anticorrosive Coating of AA-7475/ZrO2/Polymer Nanocomposites

Bodukuri

Kolekar²,

Pandey

et al. 2023

Journal of Nanomaterials

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An AA-7475 is coated with superhydrophobic (SH) polymer nanocomposites (PNCs), emphasizing the coating’s manufacturing, characterization, and anticorrosive qualities. Coating AA-7475 alloy with polyvinyl chloride (PVC), copper stearate (CS), and zirconium oxide (ZrO2) nanoparticles produces the desired superhydrophobic. Using an X-ray diffractometer, field-emission scanning electron microscopy, Fourier-transform infrared spectrometer, ZrO2 nanoparticles, CS, and PVC PNCs are analyzed structurally and molecularly. The atomic force microscope picture was analyzed to determine how the surface roughness affected the SH behavior reached by changing the weight percentage of ZrO2 nanoparticles from 0.6 to 3.0 wt%. PNC-5 with 3.0 wt% ZrO2 nanoparticles is used as resistance to corrosion coating for AA-7475 due to its water contact angle of 154°. In a 3.5% NaCl solution, uncoated and PNC-5-coated AA-7475 are examined using potentiodynamic polarization and electrochemical spectroscopy. PNC-5 coating reduces AA-7475 corrosion rate from 23.75 to 0.2253 mpy. In this study, we use polarization resistance, corrosion resistance efficiency, double layer capacitance, corrosion current density, and charge transfer resistance to demonstrate that the SH surface air trapping phenomena are responsible for effective corrosion resistance.

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Section: Resultsmentioning

confidence: 99%