Alkyl carboxylates as efficient and green inhibitors of magnesium alloy ZE41 corrosion in aqueous salt solution

Effects of electrolyte component in simulated body fluid on the corrosion behavior and mechanical integrity of magnesium

“…Magnesium and its alloys are attractive for orthopedic applications because of their light weight, high specific strength, excellent shock resistance and degradable properties; but the corrosion resistance may be inadequate for their applications [1][2][3][4][5]. Their corrosion resistance has been improved by some treatments, such as reducing the concentrations of alloy impurities, conversion coating, electroplating/electroless plating, anodizing and plasma electrolytic oxidation [6][7][8][9][10][11][12][13][14]. The results obtained from current in vitro and in vivo tests indicated that many magnesium alloys would gradually degrade in physiological environment and the degradation product would not induce toxicity to the host [15].…”

Organic corrosion inhibitors: where are we now? A review. Part II. Passivation and the role of chemical structure of carboxylates

“…It is a widely used structural alloy in automobiles. The inhibitive action of sodium salts of SA, palmitic acid C 15 H 31 COOH and miristic acid C 13 H 27 COOH towards ZE41 alloy in an aqueous solution (0.1 M NaCl + 0.2 Na 2 SO 4 ) at elevated temperatures of 30-50°C was investigated [23]. It was shown that a proportional increase in Z was observed when C in increased up to an C in,max , beyond which the increase in Z was minimal.…”

“…An important step in this research was made by using the well-known linear free-energy relationship (LFER) principle [13] to describe and predict the efficiency of corrosion inhibitors not only in the dissolution and passivation of metals or alloys, but also in the prevention of its local depassivation [1,14,15]. Over the past decade, the high passivating ability of various carboxylates and amino acids was proved not only for iron or low carbon steels [10,[16][17][18][19][20][21][22] but also for nonferrous metals [23][24][25][26][27][28][29].…”

Electrochemical corrosion study of Mg–Al–Zn–Mn alloy in aqueous ethylene glycol containing chloride ions

“…The medium frequency capacitive loop represents mass transport as a consequence of diffusion or electrolyte ingress through corrosion product. The lower frequency inductive loop represents the relaxation of adsorbed species like Mg(OH) + and Mg(OH) 2 adsorbed at the metal surface [49][50][51]. Song and Xu have suggested that the medium frequency capacitive loop represents the combination of pseudo resistance and capacitance of the film formation and dissolution process [52].…”