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Showing 1 to 16 of 16 for “"Passive Layer"”.
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Influence of Reinforcing Steel Parameters on the Formation of the Passive Layer
… differences in C/A ratios. The formation of the passive layer was confirmed by the corrosion current densities and half-cell potentials. The rate of the formation of the passive layer occurred in two distinct periods, a rapid rate from casting to about 105 days and a significantly slower rate …
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Functional Protein Based Materials
… hydrogels for use in soft actuators. A gelatin bilayer system was designed where an active layer swelled more than a passive layer to cause the system to bend/actuate in response to an environmental stimulus. In Chapter III, gelatin layers were chemically crosslinked to different degrees with …
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Electromechanical Characterization of the Static and Dynamic Response of Dielectric Elastomer Membranes
… the effect of flexible electrodes and passive layers on the electromechanical response of dielectric elastomer membrane actuators and sensors. To study the effect of the flexible electrodes, four compliant electrodes were tested: carbon grease, silver grease, graphite spray, and …
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In-vitro characterization of boronized titanium alloy by means of corrosion and electrochemical impedance spectroscopy methods in simulated body fluids
… alloy proved the existence of a protective layer, while the unboronized titanium alloy exhibited the formation of a passive layer over the course of testing. Moreover, boronized titanium alloy has shown an ability to withstand corrosive environments and pitting corrosion, which was not seen …
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Corrosion and Tribocorrosion Kinetics of Al-based Concentrated Alloys in Aqueous Sodium Chloride Solution
… The results show that the depassivation rate of passive film increased with increasing sliding frequency. Mechanical wear also increased with increasing sliding frequency, which was mainly related to the increase of coefficient of friction and real contact area. Chemical wear tended to increase …
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Corrosion protection mechanisms of trivalent chromium based passivations on γ-ZnNi coated Al6061-T6 alloy
… its effect on hexavalent chromium content in the passive layer. Investigations of both a cobalt-containing and cobalt-free TCP on SAE 1008 steel indicated that both passivations protect well for up to 1000 hours in neutral salt spray exposure (SSE). A repetition on Al 6061-T6 alloy indicated that …
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Anodic Metal Dissolution In Haloaluminate Molten Salts/Ionic Liquids
… process governed by the dissolution of a passive layer of alcl3(s) and/or albr3(s) on the electrode surface. In alcl3-etmeimcl, the passive current density scales linearly with the concentration of alcl4- in the ionic liquid. The heterogeneous rate constant, referenced to the equilibrium …
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Fundamental studies on electrochemical production of dendrite-free aluminum and titanium-aluminum alloys
… electrolytes due to the formation of TiCl_3 passive layer on the electrodes. To increase the productivity, constant current method (160-210 A/m^2 ) was implemented. This fundamental study on low temperature production of dendrite-free aluminum and Al-Ti alloys is not only efficient but also …
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Būdvardžių darybiniai sinonimai /
… derivatives, as well as the words from the passive layer of lexis. There have been recorded 37 derivatives having stylistic references. Polysemous derivative with one meaning belong to one row of derivative synonyms, with the other meaning belong either to the other row of derivative …
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Projeto e fabricação de um reator para tratamento superficial de implantes por oxidação eletrolítica a plasma
… in the presence of biological fluids has a thin passive layer of oxide responsible for biocompatibility when inserted into the body. However, this spontaneous oxide layer can be lost, quickly, if inserted in adverse environments. Accordingly, appropriate surface modification is required for …
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Effects of Chemical and Structural Heterogeneity on the Tribocorrosion Resistance of Metals in Aqueous Solutions
… facilitates to generate more protective passive layer with lower defect density and faster repassivated capability, compared to their homogenous counterparts. In the second study, nanoscale chemical and structural heterogeneity were introduced in Al by forming Al/X nanostructured metallic …
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Model calculations of current and density distributions in dissipative Hall bars
… magneto-resistance (MR) of quantum-Hall (QH) bilayer systems in magnetic field (B) intervals, in which one layer is in a QH-plateau while the other is near an edge of a QH-plateau. We extend a recent approach to the QH effect, based on the Thomas-Fermi-Poisson theory and a local conductivity …
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Multiphysics Modelling on the Effects of Composition and Microstructure during Tribocorrosion of Aluminum-based Metals and Structures
… solution due to the protection provided by the passive layer. However, these naturally formed layers are thin and delicate, leaving the materials vulnerable to simultaneous mechanical and corrosion damage, which in turn, compromise their resistance to tribocorrosion. Past research in …
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Microcapsule-based self-protecting coatings
… corrosion is to apply a protective coating (layer) to the targeted “substrate” well before placing the item in service. The protective coating acts as a passive layer between the protected substrate and the corrosive environment. Generally, the protective layer includes additive(s) that are …
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Towards Monolithically Integrated Optical Systems for Communication and Sensing
… framework. The research spans innovations in passive and hybrid material systems, novel switching architectures, and computationally enhanced sensing paradigms, culminating in a trajectory that points toward next-generation multifunctional integrated photonics. At the device level, the work …
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Mechanisms governing the growth, reactivity and stability of iron sulfides
… system comprising an iron sulfide film (passive layer) formed on iron or steel in contact with an hydrogen sulfide (H₂S)- rich fluid can thus, in principle, be modeled by a series of unit reaction steps that control the rate of degradation under given thermodynamic conditions. This …