Active corrosion protection of super-hydrophobic corrosion inhibitor intercalated Mg–Al layered double hydroxide coating on AZ31 magnesium alloy

Advances in coatings on magnesium alloys for cardiovascular stents – A review

“…Hence, researchers have attempted to create a uniform and compact Mg-based hydroxide layer on Mg alloy for enhancing its corrosion resistance [ 101 , 102 ]. Currently, the hydroxide films prepared using a hydrothermal method (hydrothermal treatment is a strategy in which the precursor is placed in an autoclave to react under high pressure and temperature [ 103 ]), including Mg(OH) 2 and layered double hydroxide (LDH), have been highlighted [ 104 , 105 ].…”

Na2SnO3 functions as outstanding magnesium alloy passivator by synergistic effect with trace carboxymethyl chitosan for Mg–air batteries for standby protection

“…The absorption peak at 1640 cm À1 in the corrosion product layer formed from NaCl solution containing mixed inhibitors was obvious and strong, which was caused by asymmetric and symmetric stretches of the carboxyl group; it could be concluded that organic low surface energy substances existed in the AZ61 alloy surface. 90,91 The small sharp peak at about 2890 cm À1 in the corrosion product layer formed from the NaCl solution containing mixed inhibitors corresponds to C-H stretching vibration, which splits out from the broad peak, indicating that the carbon ring has a strong interaction with the corrosion product film (Mg and Sn hydroxides). 87,91,92 The tensile vibration of CO 3 2À at 1480 and 880 cm À1 was also observed; this is in line with our explanations above regarding the formation of MgCO 3 in air.…”

“…90,91 The small sharp peak at about 2890 cm À1 in the corrosion product layer formed from the NaCl solution containing mixed inhibitors corresponds to C-H stretching vibration, which splits out from the broad peak, indicating that the carbon ring has a strong interaction with the corrosion product film (Mg and Sn hydroxides). 87,91,92 The tensile vibration of CO 3 2À at 1480 and 880 cm À1 was also observed; this is in line with our explanations above regarding the formation of MgCO 3 in air. Likewise, it is possible that the dissolution of carbon dioxide in air into NaCl solution may also be involved.…”

Critical review on development of magnesium alloy as anode inMg‐Airfuel cell and additives in electrolyte

“…Among the various types of surface coating available, superhydrophobic (SPH) coatings have gained profound interest in the field of anti‐corrosion of Mg alloys. Inspired by the “lotus effect”, the water‐repellent, and self‐cleaning properties of the SPH surface establish the protective coating that impairs the attack of aggressive ions from corrosive media, thus improving the protective effect on metal substrates 99 . Yao 100 and Liu 101 explained that SPH enforces a corrosion barrier by creating a protection layer of air pocket entrapped in microstructure functions to decrease the contact area and minimize the interaction between the substrate surface and corrosive solution, causing the difficulty of harmful ions such as chloride ions to pierce through the SPH coating owing to the obstructive effect of air pockets (Figure 6).…”