Zirconium ions integrated in 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP) as a metalorganic-like complex coating on biodegradable magnesium for corrosion control
“…The EC model of AZ31 substrate shows two obvious time constants in Fig. 4 e, which can be described as R s ( Q 1 ( R f ( Q dl R ct ))), where Q l and R f are the double layer capacitance and resistance of corrosion product film, and R ct and R s represent the degree of impedance against the corrosion and the solution resistance between the electrode and the samples [ 60 ]. As shown in Fig.…”
“…The EC model of AZ31 substrate shows two obvious time constants in Fig. 4 e, which can be described as R s ( Q 1 ( R f ( Q dl R ct ))), where Q l and R f are the double layer capacitance and resistance of corrosion product film, and R ct and R s represent the degree of impedance against the corrosion and the solution resistance between the electrode and the samples [ 60 ]. As shown in Fig.…”
“…The electron-rich groups of the hydroxyl and phosphonic acid groups of HEDP have strong interactions with metal ions. 16,17 In addition, HEDP has low toxicity to aquatic organisms but causes eutrophication of water. 18 So it should be avoided to be discharged into natural water bodies.…”
The electronic structure analysis of the structures of CaHEDP complexes under different pH conditions reveals that weak alkalinity is the best condition for HEDP to dissolve calcium sulfate scale.
“…The electron-rich groups of the hydroxyl and phosphonic acid groups of HEDP have strong interactions with metal ions. 6,7 In addition, HEDP serving as a flotation reagent in mineral flotation separation has attracted a large amount of attention. 8 HEDP can also be used to treat bone cancer and osteoarthritis, which shows its low toxicity to the human body.…”
Ab initio molecular dynamics (AIMD) simulations were performed to study the adsorption of 1-hydroxyethane-1,1-diphosphonic acid (HEDP) molecule on Fe (100) surface. Through molecular dynamics trajectory, changes in bond length and...
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