... showed that all of the as-obtained composites presented magnetic-controlled release properties and good inhibition performance. Without the external magnetic field (no MF mode), the release of MBT from MHMNs-7.0/MBT mainly involved Fickian diffusion. Under the application of a magnetic field (MF ON mode...

... 2020 19 01 2021 19 01 2021 © 2021, NACE International 2021 anodic dissolution convection diffusion iron magnetic field mass transport T he effects of magnetic field on electrochemical reactions have been reported, ^{1 - 9} mainly on mass transport, electrode...

... is the lattice diffusion coefficient, d_g is grain size, T is temperature, and k is the Boltzmann constant. Polycrystalline Al₂O₃ ^{63 - 64} and BeO ⁶⁵ were found to satisfy this diffusional creep model for wide ranges of stress and temperature...

... are compared with a model resulting in a diffusion coefficient of 2.1 × 10⁻¹⁴ m²/s. A two-step increase of the concentration is observed and ascribed to saturation of ferrite followed by charging of austenite grains. Microstructural changes are observed during charging, i.e., formation...

... to evaluate the effect produced by the soil particles on the diffusion rates of oxygen and hydrogen ions in the soil medium. The obtained results revealed that the corrosion rate of steel in the pyrite-containing solution was accelerated due to the continuous production of hydrogen ions during the pyrite...

... 2017 06 11 2017 06 11 2017 © 2018, NACE International 2018 corrosion rate diffusion modeling pit morphology pitting porosity repassivation Corrosion in stainless steel can localize in the form of growing pits underneath perforated (lacy) covers. ^{1 - 6}...

... electrochemical polarization, spectroscopy, and characterization techniques. The formation of porous FeOOH products occurs a few hours following immersion, with morphologies distinctly dependent on O₂ concentration. O₂ diffusion is less in the FeOOH tubercle formations formed in 20 ppm...

... from the initiation of SCC after long times in high-temperature water. ^‡ Corresponding author. E-mail: [email protected] . 06 04 2016 13 06 2016 13 06 2016 © 2016, NACE International 2016 Alloy TT690 cavity formation diffusion long-term operation...

...Traidia; A.M. El-Sherik; H. Attar The present work discusses the influence of specimen dimensions and boundary conditions on the deviation towards 2D diffusion during hydrogen permeation measurements on thick carbon steel plates. It was mathematically found and experimentally confirmed...

... was controlled by hydrogen diffusion. ‡Corresponding author. E-mail: [email protected] . *National Center for Education and Research on Corrosion and Materials Performance (NCERCAMP), The University of Akron, Akron (OH). **Comisión Nacional de Energía Atómica, Instituto Sabato (UNSAM/CNEA...

... corrosive environments. In this paper, the degradation behavior of a new modified polyethylene (sPE) lined on a steel substrate exposed to hydrochloric acid (HCl) solution environment was investigated. Diffusion behavior of the HCl solution, adhesion strength, and blister formation with time dependence were...

... indicating corrosion of reinforcement steel) and thin longitudinal cracks (likely caused by mechanical damage from pile driving). Chloride ion diffusivity was low, in the order of 1 × 10⁻⁹ cm²/s. Other measured parameters such as concrete resistivity, porosity, and water absorption...

... to the interface between retained austenite and the martensite phase. This is in contrast with conventional 13% Cr steel (AISI 410 [UNS S41000]) for which irreversible trapping at carbides was important. Comparison of effective diffusivities for each material at room temperature, calculated using trapping models...

... strain rate test (CSRT), etc. However, as shown here, SMM based on self-diffusion mass transport under stress (known as Nabarro creep) is not credible, because the crack propagation rate in SMM can never be numerically equal to the diffusion creep deformation rate under the same stress at the same time...

... was found when the inhibitor blend (10%) was added after the onset of pitting corrosion. Investigation of the diffusion rate in mortar demonstrated the high mobility of the hydroxyalkylamine molecule in porous cement paste. Thus, it was assumed that it is, in principle, possible to obtain high inhibitor...

... to study chloride removal effects induced by an intermittent CP current in a tidal zone situation. Factors that affected the short-term chloride removal efficiency included the resistivity of concrete, charge passed, treatment duration, initial chloride content, concrete cover, and chloride diffusion...

... reaction during CP had to be transported into the crevice by diffusion through the holiday opening. 03 1998 10 1998 1 2010 NACE International 1999 cathodic protection conductivity crevice corrosion coating current density diffusion disbondment dissolved oxygen holiday mass...

... was controlled by chemical reaction and diffusion in the presence of iodide (I^–). 04 1996 05 1997 1 2010 NACE International 1998 bismuth buffers chloride diffusion electrochemical response halide effect iodide passivation potentiodynamic testing potentiostatic testing...

... (FeCO₃) scale formed. Diffusion-controlled corrosion through a stable scale of iron hydroxycarbonate (Fe₂[OH]₂CO₃) was responsible for lowering the corrosion rate above 60°C. Under a diffusion-controlled corrosion mechanism, microstructure of the steel had no effect...

...-stage process. Initially, the free chloride is removed at a rate that depends upon the concrete resistivity, chloride diffusion coefficient, concrete cover, current density, and initial chloride profile. The amount of chloride remaining at the end of the first stage is determined by the quantity...