We outline the ability of zinc phosphate coatings, obtained by chemical conversion, to protect mild steel rebars against localized corrosion, generated by chloride ions in alkaline media. The corrosion resistance of coated steel, in comparison with uncoated rebars and coated and uncoated steel rebars embedded in mortar, were evaluated by open-circuit potential, potentiodynamic polarization, cro...

The interactions between the metal and its environment are responsible for electrochemical reactions leading to corrosion. To avoid further degradation in general appearance of corrosion products, a inhibitor must be applied on metallic surface reduce or prevent exposed corrosive environment. Corrosion inhibitors one different methods used by conservation-restoration professionals preserve cult...

Theoretical and experimental investigation of wear during coupling in internal gears coated with various polymeric coating materials was performed in this study. In the theoretical part of the study, Archards’ wear formulation was adapted to internal gears and wear behavior in various conditions was determined. Moreover, a fatigue and wear testing apparatus having similar working principle with...

Soontornvipar t K. , A. Neãas, M. Dvofiák: Effects of Metallic Implant on the Risk of Bacterial Osteomyelitis in Small Animals. Acta Vet. Brno 2003, 72: 235-247. Metallic implants are frequently used for stabilization of fractures in dogs and cats. Postoperative bacterial osteomyelitis is a recognized complication following fracture repair and can be influenced by the presence of metallic impla...

We present an analysis of the vibrational dynamics of metal vicinal surfaces using the embedded atom method to describe the interaction potential and both a real space Green’s function method and a slab method to calculate the phonons. We report two main general characteristics : a global shift of the surface vibrational density of states resulting from a softening of the force field. The latte...

nanosized tio2 particles were prepared by sol–gel method. the tio2 particles were co-deposited with chromium using electrodeposition technique. in investigating of coating surfaces by scanning electron microscope (sem), the results showed that the morphology of the coating surface was changed by adding tio2 nanoparticles to the chromium coating. the corrosion behavior of the coatings was assess...

Microbiologically influenced corrosion (MIC) is the process of material degradation in presence microorganisms and their biofilms. This an environmentally assisted type corrosion, which highly complex challenging to fully understand. Different metallic materials, such as steel alloys, magnesium aluminium titanium have been reported adverse effects MIC on applications. Though many researchers ba...

Hydrophobicity and superhydrophobicity with self-cleaning properties are well-known characteristics of several natural surfaces, such as the leaves sacred lotus plant (Nelumbo nucifera). To achieve a superhydrophobic state, micro- nanometer scale topography should be realized on low surface energy material, or coating deposited top micro-nano if material is inherently hydrophilic. Tailoring che...

An effective way of assessing corrosion in pipelines before serious consequences occur is to use tools that can predict the future of a pipeline through an understanding of its present state and the mechanisms of corrosion. In this work electrochemical methods such as liner and tafel polarization resistance were used to evaluate corrosion. Most metal corrosion occurs via electrochemical reactio...