Considering the above mechanisms, several measures can be taken to impede the dissolution of the magnesium alloy: (1) to control the amount of the aggressive anions in the environment; (2) to increase the content of the reaction products, thus changing the reaction equilibrium and retarding the ...
As well known, the Rp represents the electrochemical reaction at the interface, and a larger Rp value of NdFeB in AS-Vc means less corrosion to the substrate. Based on the above results, the process of the two alumina films forming on the surface of NdFeB is proposed. The chemical ...
However, excessive Sr (>0.2 wt %) led to a microgalvanic reaction and accelerated corrosion and H2 evolution. Considering the corrosion resistance, H2 evolution, mechanical properties and biocompatibility in vitro and in vivo, Mg–1Zn–1Sn-0.2Sr alloy has tremendous potential for clinical ...
Adsorption is an important process in corrosion inhibition because the inhibition of metal corrosion by organic molecules is often due to adsorption of the inhibitor molecules onto the metal surface thereby blocking the active sites that are susceptible to corrosion reaction. A better understanding of ...
This protection can be based both on their oxidizing properties, through the oxidation reaction, and the formation of oxide film, thereby achieving the security of the metal. Alternatively, the corrosion inhibitor can be nonoxidizing, and can be adsorbed in the anode area with the help of ...
In the viewpoint of corrosion process with ionic transport, the electro-physical-chemical mechanisms should include both the reaction and ionic transport. In [57], a simplified generalized mass transport equation is proposed considering reactive effects on the ionic concentration regardless of system tor...
A exp ?14? x This is commonly known as the high field equation. It similar to the Tafel equation for activation controlled electrochemical reactions with the additional feature that the potential driving the reaction lies across an oxide film of variable thickness, x, rather than across the ...
The more accurate jL or the contribution of charge transfer could be derived from the Koutecky-Levich equation [61] in the RDE measurements. Because the net rate of the anodic reaction (i.e., copper corrosion) must equal the net rate of the cathodic reaction (i.e., mainly oxygen ...
The corrosion rates are calculated using icorr based on Faraday’s law, whereby icorr is determined using Gamry Echem Analyst software based on the Butler–Volmer equation. In contrast to the corrosion potentials, batch AMg had the highest and batch BMg had the lowest icorr, consequently m˙corr...
process does not consider heat absorption and release in the reaction process, so the energy model is not involved. For the flow of each phase in the stirred reactor, two basic equations of mass conservation (continuity equation) and momentum conservation (Navier–Stokes equation) must be ...