Progressive ocean acidification due to anthropogenic CO(2) emissions will alter marine ecosystem processes. Calcifying organisms might be particularly vulnerable to these alterations in the speciation of the marine carbonate system. While previous research efforts have mainly focused on external dissolution of shells in seawater under saturated with respect to calcium carbonate, the internal sh...

Coastal erosion is increasing worldwide due to the frequency of extreme natural phenomena and excessive human exploitation. In this study, a small model experiment was conducted investigate solidification effects three enzyme sources—soybean urease, freshwater Bacillus pasteurella, seawater domesticated pasteurella—on coastal sediments their impacts in environment. The solidifying effect differ...

Superhydrophobic coatings were fabricated through a one-step electrochemical process onto the surface of 316L stainless steel samples. The presence hierarchical structures at micro/nanoscale and manganese stearate into gave superhydrophobicity to coating, with contact angle ~160°, self-cleaning ability. Corrosion resistance samples was also assessed after electrodeposition Electrochemical Imped...

The modeling of corrosion protection systems in seawater is classically based on boundary element method (BEM) and generally limited to static studies. This article presents an original transient approach coupling a BEM for the circuit representation order introduce nonlinear polarization laws impressed current cathodic (ICCP) electric system. A special care taken numerical implementation enabl...

Aluminum alloy 7075 is an important engineering material for ship structures. However, the corrosion of Al alloys generally exists in various environments, especially marine environment. Currently, behaviors sulfate-reducing bacteria (SRB) environment has not been well-addressed. In this paper, effect SRB on aluminum was studied by adding to real seawater. The microstructure and grain orientati...

In this study corrosion-fatigue tests have been conducted on fracture mechanics specimens extracted from an S355 G10+M structural steel welded plate. The performed compact tension with the crack tip located in heat affected zone. test results compared data available base metal as well air same material. Moreover, obtained literature a wide range of steels and also fatigue trends for joints free...

The corrosion resistance of mild steel (used to make hull plates in ship technology) seawater before paint coating (Nippon paint, weatherbond advance) and after has been measured by electrochemical studies such as Polarisation study AC impedance spectra. It is observed that coating, the increases. Polarization reveals linear polarization increases current decreases. spectra reveal presence char...

Seawater electrolysis for hydrogen generation has received increasing attention recently due to the scarcity of freshwater and additional prospect seawater desalination. The development non-noble-metal-based oxygen evolution reaction (OER) electrocatalysts with high catalytic activity, long-term durability, OER selectivity is crucial large-scale but remains a significant challenge. Here we deve...