Abstract An anticorrosive organic coating of epoxy on carbon steel (CS) was modified with uniformly dispersed graphene oxide (GO) after functionalization ionic liquid (FGO). The (IL) used 1‐butyl‐3‐methylimidazolium acetate which possess higher solubility and the prepared by improved Hummer's method. successful grafting IL GO confirmed various techniques including Fourier‐transform infrared spectroscopy, Raman, XPS, x‐ray diffraction, thermogravimetric analysis, BET, field emission scanning...

The effect of sodium thiosulfate (Na2S2O3) concentrations (0.01, 0.1 and 1 M) on carbon steel corrosion behavior in 3.75 M ammonium chloride (NH4Cl) solution was investigated. potentiodynamic polarization results show that the icorr increases from 8.7 × 10−6 A cm−2 to 7.2 10−4 when (S2O32−) concentration 0 M. Electrochemical impedance spectroscopy measurements also mimic same trend. However, it is observed value starts decreasing S2O32− equals or exceeds NH4Cl (Cl−:S2O32− ≥ 1:1) electrolyte...

Potentiodynamic polarization and electrochemical impedance measurements were employed to investigate the effect of acetic acid on anodic dissolution carbon steel in a CO2-H2S solution. Both results unveil that rate first increases then decreases with an increase concentration. At lower concentrations acid, corrosion due cathodic current density. While decrease at higher is attributed The reaction mechanism CO2-H2S-acetic medium elucidated along retrieval kinetic parameters using data...

Chemical mechanical planarization of interconnect metal copper and barrier cobalt using NaOCl based slurry is investigated in this study. The consists 2 wt% silica, 0.5 5 mM BTA as inhibitor. formulated gives a combination low etch rates comparatively fair removal along with selectivity ∼1:1.006 at pH 9, which are desired to be used semiconductor industry. A decrease for both Cu Co observed the regime changes from acidic alkaline. At pH, passive layer if any formed on surface becomes very...

Chemical mechanical planarization (CMP), a commonly employed process for attaining local and global in integrated circuits fabrication, leaves contaminants defects on the surface polished. Due to miniaturization of devices, new materials/ processes fabrication IC are considered, introducing post-CMP issues. So, understanding cleaning is critical choose an appropriate method given material. Thus, this review paper, types generated during issues related it discussed. The different physical...

The work focuses on the investigation of Co/Cu removal rate (RR) selectivity and reduction galvanic corrosion associated with Co Cu by using oxalic acid (weak acid) as complexing agent imidazole an inhibitor in hydrogen peroxide (H 2 O ) fumed silica-based slurry. results obtained from dissolution study, polishing experiments potentiodynamic polarization measurements revealed that proposed chemistry can achieve a desirable RR significant decrease potential (pH 9) to be used semiconductor...

Abstract The dissolution behavior of carbon steel in ammonium chloride (NH 4 Cl) solution containing sodium thiosulfate (Na 2 S O 3 ) various concentrations (0.01 and 0.1 M) was investigated using electrochemical impedance spectroscopy (EIS) other nonelectrochemical techniques. weight loss polarization measurements indicate a significant increase the NH Cl corrosion rate on addition Na 3. EIS exhibited two capacitive loops at multiple direct current (dc) potentials for both concentrations....

Abstract The effect of soft cations (Na + , K NH 4 ) on the corrosion behavior carbon steel in chloride (Cl − media was investigated using various electrochemical and nonelectrochemical techniques. Data revealed that rate is higher case ammonium solution following order >K >Na . polarization impedance spectroscopy (EIS) measurements indicated a significant influence both mechanistic reaction pathway dissolution Cl media. EIS measurement showed two time constants all cases. Electrical...

Abstract Anodic dissolution of carbon steel in solution mixtures simulated CO 2 –H S the presence formic acid (0–500 ppm) was investigated using electrochemical methods such as potentiodynamic polarization and impedance spectroscopy (EIS). The results show that corrosion rate increases with an increase concentration acid. Potentiodynamic data revealed cathodic current density plays a significant role rate. A combination equivalent circuits employed to model spectra electrode acquired at open...

<title>Abstract</title> The adoption of CO₂ capture, utilization, and storage (CCUS) technology is increasingly prevalent, driven by the global initiative to conserve energy reduce emissions. Nevertheless, CCUS has potential induce corrosion in equipment, particularly high-pressure environments containing CO₂. Therefore, anti-corrosion protection necessary for metal utilized production equipment. Herein, an ionic liquid (Triethylsulfonium...

The corrosion of carbon steel in chloride media has been investigated extensively literature [1, 2]. However, the role cations behavior is not widely reported. In present work, effect Na + , K and NH 4 on via. potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), field emission scanning electron microscopy (FESEM) measurements. All measurements were carried out using a three electrode system, after open circuit potential reaches stable value. was used as working...