The effect of the Au coated printed circuit board (PCB) as a current collector on performance fuel cells is demonstrated. In this study, optimized pulse electroplating was introduced, which found to be much more effective compared direct (DC) plating for PCB fabrication based passive area from potentiodynamic polarization scan. Variable electrochemical parameters such applied potential and freq...

Automobile production plants have advanced the utilization of stainless steel alloys for exhaust mufflers due to corrosion failures associated with their operating lifespan and conditions application. Corrosion vulnerability as received heat treated (500oC 1000oC) 439 L ferritic in 3.5 M H2SO4 electrolyte at 0% 6% NaCl concentration was evaluated potentiodynamic polarization, potentiostatic mea...

The high strength carbon steels such as API X65 is widely used to build the pipelines. In this study, the corrosion behavior welds region of the gas pipeline was studied. For this purpose, Shield Metal Arc Welding (SMAW) was used to evaluate the proposed method. The welding processes were performed with E6010, E6013, and ER70S-6 electrodes as filler metal and welding carried out in 3 passes by ...

In this work, the results obtained from studying the corrosion of cast iron in freely aerated stagnant Arabian Gulf seawater (AGS) at room temperature were reported. The study was carried out using weight-loss (WL), cyclic potentiodynamic polarization (CPP), open-circuit potential (OCP), and electrochemical impedance spectroscopy (EIS) measurements and complemented by scanning electron microsco...

The aim of this study was to assess the surface characteristics and to compare the corrosion potential of metal brackets and wires in environments containing different media. Four brands of metal brackets and two types of orthodontic wires [stainless steel and nickel-titanium (NiTi)] were investigated. An electrochemical assay was used to compare the corrosion potential (V) of the brackets and ...

The bioactivity and the corrosion protection for a novel nano-grained Ti-20Nb-13Zr at % alloy were examined in a simulated body fluid (SBF). The effect of the SPS's temperature on the corrosion performance was investigated. The phases and microstructural details of the developed alloy were analyzed by XRD (X-ray Diffraction), SEM (Scanning Electron Microscopy), and TEM (Transmission Electron Mi...

We study the correlation of wetting properties and corrosion rates on hydrophobized cast iron. Samples of different surface roughnesses (abraded by sandpaper) are studied without coating and with two types of hydrophobic coatings (stearic acid and a liquid repelling spray). The contact angles and contact angle hysteresis are measured using a goniometer while corrosion rates are measured by a po...

A special additive manufacturing (AM), called as Direct Metal Laser Sintering (DMLS), is a technology that produces 3D workpieces using wide range of different metals raw materials. The aim current research to investigate the plasma nitriding effect on DMLS produced samples. direct treatment was achieved at 440 °C for 4 hours with 75%N2 – 25%H2 gas mixture. Before treatment, 316L austenitic sta...

Welding parameters can greatly affect the final product. In this study, there was a variation given on pulse energy, i.e., heat input parameters. The microstructure analyzed and presented in relation to efficiency of corrosion. microstructural study showed changes fusion zone (FZ) heat-affected (HAZ) with an increase energy. development prominent austenite process weld material had prolonged ef...

The anode material is one of the determining factors for success electrowinning process. This study aims to coat graphite substrate with β-PbO2 produce an inert graphite/β-PbO2 composite low cost and good quality. synthesis expected be used as composites processes. deposition layer was prepared on surface by electrodeposition process using a sulfuric acid electrolyte. effect electrolyte concent...