Insight into the Corrosion Inhibition Performance of Leaf Extract as a Novel Eco-Friendly Corrosion Inhibitor for Mild Steel in 1 M HCl Solution.

In this research, the leaf (PSL) extract was evaluated as a green corrosion inhibitor for the corrosion of mild steel in 1 M HCl using electrochemical measurements and surface characterization. Electrochemical impedance spectroscopy (EIS) spectra showed that the inhibitory activity of the phytochemical compounds enhanced with increasing concentration up to 400 ppm, which was reflected in the increase in the charge transfer resistance and double-layer capacitance. Regarding the effect of immersion time, EIS results indicated that the persistence of the PSL extract was between 4 h and 8 h of exposure time.

Hexane extract of Persea schiedeana Ness as green corrosion inhibitor for the brass immersed in 0.5 M HCl.

The hexane extract of Persea schiedeana Ness (PSN) was analyzed as corrosion inhibitor for the brass surface immersed in 0.5 M HCl. Fourier-transform infrared spectroscopy and a gas chromatographic (GC) and mass spectrometric (MS) were used to identify the PSN extract's functional groups and compound constituents.

Effect of Cationic Substitution of Metal Species in Poly(vinylidene difluoride) (CHF) by Ab Initio Calculations.

The stronger activity of poly(vinylidene difluoride) (PVDF; CHF), related with its high dielectric constant and its ferromagnetic behavior, puts it into the kinds of materials with novel mechanical features to develop new devices with numerous advantages. Even though PVDF is a common piezoelectric polymer with promising multifunctionality, there still has been little progress in theoretically understanding its band structure and the addition of itinerant electrons because of its polymorphous and multiple phases. In this work, we present the structural and electronic properties of 25% doped CHF(X) (X = Al, Ni, and Cu) compounds, including high-frequency dielectric constant (ϵ) calculations.