TOF-SIMS and AFM analysis of pH effect on the interfacial films on η-phase in aqueous salt solutions

Andreatta, 2003, Electrochemical characterisation of aluminum AA7075-T6 and solution heat treated AA7075 using a micro-capillary cell, Electrochim. Acta, 48, 3239, 10.1016/S0013-4686(03)00379-7 Birbilis, 2005, Electrochemical characteristics of intermetallic phases in aluminum alloys - An experimental survey and discussion, J. Electrochem. Soc., 152, B140, 10.1149/1.1869984 Birbilis, 2005, Limitations in microelectrochemical capillary cell testing and transformation of electrochemical transients for acquisition of microcell impedance data, Electrochim. Acta, 50, 3536, 10.1016/j.electacta.2005.01.010 Ramgopal, 2002, Role of grain-boundary precipitates and solute-depleted zone on the intergranular corrosion of aluminum alloy 7150, Corrosion, 58, 687, 10.5006/1.3287699 Diler, 2014, Initial formation of corrosion products on pure zinc and MgZn2 examinated by XPS, Corros. Sci., 79, 83, 10.1016/j.corsci.2013.10.029 Ikeuba, 2023, Bimetallic corrosion evaluation of the π-Al8Mg3FeSi6 phase/Al couple in acidic, neutral and alkaline aqueous solutions using the scanning vibrating electrode technique, Electrochim. Acta, 10.1016/j.electacta.2023.142240 Birbilis, 2014, Evidence for enhanced catalytic activity of magnesium arising from anodic dissolution, Electrochim. Acta, 132, 227, 10.1016/j.electacta.2014.03.133 Williams, 2013, The source of hydrogen evolved from a magnesium anode, Electrochem. Commun., 36, 1, 10.1016/j.elecom.2013.08.023 Alsagabi, 2016, Passivity and localized corrosion of AZ31 magnesium alloy in high pH electrolytes, J. Mater. Eng. Perform., 25, 2364, 10.1007/s11665-016-2101-9 Thomas, 2012, Corrosion of Zinc as a Function of pH, Corrosion, 68, 10.5006/1.3676630 Moon, 1999, Effects of applied anodic potential and pH on the repassivation kinetics of pure aluminum in aqueous alkaline solution, J. Solid State Electr., 3, 104, 10.1007/s100080050135 Pyun, 2000, Corrosion mechanism of pure aluminum in aqueous alkaline solution, J. Solid State Electr., 4, 267, 10.1007/s100080050203 Fujimoto, 2015, Characterization of oxide films formed on Alloy 600 and Alloy 690 in simulated PWR primary water by using hard X-ray photoelectron spectroscopy, J. Solid State Electr., 19, 3521, 10.1007/s10008-015-2817-8 Marrani, 2013, Electrochemically deposited ZnO films: an XPS study on the evolution of their surface hydroxide and defect composition upon thermal annealing, J. Solid State Electr., 18, 505, 10.1007/s10008-013-2281-2 Santamaria, 2015, Photoelectrochemical and XPS characterisation of oxide layers on 316 L stainless steel grown in high-temperature water, J. Solid State Electr., 19, 3511, 10.1007/s10008-015-2849-0 Abeng, 2021, Corrosion inhibition of API 5 L X-52 steel in oilfield acidizing solution by Gentamicine and sulfamethoxazole: experimental, plane-wave density functional theory (PWDFT) and the generalized-gradient approximation (GGA), J. Adhes. Sci. Technol., 10.1080/01694243.2021.2013591 Essien, 2021, Experimental and Computational Chemistry investigations of tartaric acid as green corrosion inhibitor for API 5 L X 52 carbon steel in 0.5 M HCl, Commun. Phys. Sci., 7 Obike, 2020, Review of the losses and devastation caused by corrosion in the Nigeria oil industry for over 30 years, Int. J. Corros. Scale Inhibit., 1, 74 Nya, 2018, Mild Steel Corrosion Mitigation in Sulphuric Acid via Benign Isolated Phytochemicals from Viscum album, J. Mater. Sci. Chem. Eng., 6, 132 Uwakwe, 2017, Molecular dynamic simulation and quantum chemical calculations for the adsorption of some imidazoline derivatives on iron surface, Glob. J. Pure Appl. Sci., 23, 69, 10.4314/gjpas.v23i1.8 Uwah, 2013, Costus afer leave extract as Nontoxic Corrosion Inhibitor for mild steel in H2SO4 Solution, Glob. J. Pure Appl. Sci., 19, 119 Abeng, 2013, Inhibitive action of alkaloids and non alkaloid fractions of the ethanolic extracts of phyllanthus amarus on the corrosion of mild steel in HCl solution, Glob. J. Pure Appl. Sci., 19, 107 Ita, 2013, Solutions of the dirac equation with gravitational plus exponential potential, Appl. Math., 4, 1, 10.4236/am.2013.410A3001 Ita, 2018, Approximate l-states solutions to the Schrodinger equation with Manning-Rosen plus Hellmann potential via WKB approximation scheme, Sri Lank. J. Phys., 19, 37, 10.4038/sljp.v19i1.8050 Uwah I.E., Ugi B.U., Okafor P.C., A.I. Ikeuba, Investigation of the corrosion inhibition effects of bitters on mild steel in acidic media: a case study of Andrographis paniculata and Vernonia amygdalina. Proceedings of the 35th Annual International Conference, Workshop and Exhibition of the Chemical Society of Nigeria (CSN). Ugi, 2015, Mangifera indica Leave Extracts as Organic Inhibitors on the Corrosion of Zinc Sheet in 5 M H2SO4 Solution, J. Appl. Sci. Environ. Manag., 19, 145 Ikeuba, 2015, Green corrosion inhibitors for mild steel in H2SO4 solution: flavonoids of Gongronema Latifolium, J. Protect. Metal. Phys. Chem. Surface., 51, 1043, 10.1134/S2070205115060118 Ikeuba, 2013, Alkaloid and non-alkaloid ethanolic extracts from seeds of Garcinia kola as green corrosion inhibitors of mild steel in H2SO4 solution, Int. J. Electrochem. Sci., 8, 7455 Ikeuba, 2018, Green corrosion protection for mild steel in acidic media: saponins and crude extracts of Gongronema latifolium, Pigm. Resin Technol., 48, 57, 10.1108/PRT-03-2018-0020 Ikeuba, 2018, SVET and SIET study of Galvanic corrosion of Al/MgZn2 in aqueous solutions at different pH, J. Electrochem. Soc., 165, C180, 10.1149/2.0861803jes Diler, 2014, Characterization of corrosion products of Zn and Zn-Mg-Al coated steel in a marine atmosphere, Corros. Sci., 87, 111, 10.1016/j.corsci.2014.06.017 Ikeuba, 2019, Understanding the electrochemical behavior of bulk-synthesized MgZn2 intermetallic compound in aqueous NaCl solutions as a function of pH, J. Solid State Electr., 23, 1165, 10.1007/s10008-019-04210-y Esmaily, 2016, A ToF-SIMS investigation of the corrosion behavior of Mg alloy AM50 in atmospheric environments, Appl. Surf. Sci., 360, 98, 10.1016/j.apsusc.2015.11.002 Seyeux, 2009, ToF-SIMS depth profile of the surface film on pure magnesium formed by immersion in pure water and the identification of magnesium hydride, Corros. Sci., 51, 1883, 10.1016/j.corsci.2009.06.002 Kairy, 2016, On the electrochemical and quasi in situ corrosion response of the Q-phase (AlxCuyMgzSiw) intermetallic particle in 6xxx series aluminum alloys, Corrosion, 73, 87, 10.5006/2249 Kairy, 2016, Exploring the electrochemistry of 6xxx series aluminum alloys as a function of Si to Mg ratio, Cu content, ageing conditions and microstructure, Electrochim. Acta, 190, 92, 10.1016/j.electacta.2015.12.098 Choi, 2013, Behavior of β phase (Al3Mg2) in AA 5083 during friction stir welding, Intermetallics, 35, 120, 10.1016/j.intermet.2012.12.004 Buchheit, 2001, The electrochemistry of intermetallic particles and localized corrosion in Al alloys, JOM, 53, 29, 10.1007/s11837-001-0084-x Ikeuba, 2019, Understanding the galvanic corrosion of the Q-phase/Al couple using SVET and SIET, J. Mater. Sci. Technol., 35, 1444, 10.1016/j.jmst.2019.03.001 McCafferty, 2010, 95 M. Pourbaix, Pourbaix,M - Atlas of Electrochemical Equilibria in Aqueous Solutions, 1967. Heakal, 2010, Electrochemical performance of Mg–9Al–1 Zn alloy in aqueous medium, J. Solid State Electr., 15, 125, 10.1007/s10008-010-1074-0 Hosking, 2007, Corrosion resistance of zinc-magnesium coated steel, Corros. Sci., 49, 3669, 10.1016/j.corsci.2007.03.032 Osabor, 2017, Chemical profile of leaves and seeds of Pentaclethram Acrophylla Benth, J. Med. Herb. Therapy Res., 5, 11 Taheri, 2014, Towards a physical description for the origin of enhanced catalytic activity of corroding magnesium surfaces, Electrochim. Acta, 116, 396, 10.1016/j.electacta.2013.11.086 Liu, 2009, A first quantitative XPS study of the surface films formed, by exposure to water, on Mg and on the Mg–Al intermetallics: Al3mg2 and Mg17Al12, Corros. Sci., 51, 1115, 10.1016/j.corsci.2009.02.017 Wang, 2010, XPS study of the surface chemistry on AZ31 and AZ91 magnesium alloys in dilute NaCl solution, Appl. Surf. Sci., 256, 5807, 10.1016/j.apsusc.2010.02.058 Yang, 2016, Characteristics of surface films formed on Mg-Sn Alloys in NaCl solution, J. Electrochem. Soc., 163, C395, 10.1149/2.0161608jes Ramgopal, 2001, Electrochemical behavior of thin film analogs of Mg(Zn,Cu,Al)(2), J. Electrochem. Soc., 148, B348, 10.1149/1.1386626 Ikeuba, 2020, SVET and ToF-SIMS studies on the Galvanic corrosion of β-phase/aluminum couple in aqueous solutions as a function of pH, J. Electrochem. Soc., 167, 10.1149/1945-7111/ab6a66 Ikeuba, 2019, Electrochemical, TOF-SIMS and XPS studies on the corrosion behavior of Q-phase in NaCl solutions as a function of pH, Appl. Surf. Sci., 490, 535, 10.1016/j.apsusc.2019.06.089 Wang, 2009, Characterization of surface products on AZ31 magnesium alloy in dilute NaCl solution, J Alloy Compd, 485, 747, 10.1016/j.jallcom.2009.06.071 Ikeuba, 2022, AFM and EIS investigation of the influence of pH on the corrosion film stability of Al4Cu2Mg8Si7 intermetallic particle in aqueous solutions, Appl. Surface Sci. Adv., 11, 10.1016/j.apsadv.2022.100291 Atrens, 2007, The negative difference effect and unipositive Mg+, Adv. Eng. Mater., 9, 292, 10.1002/adem.200600275 Petty, 1954, The anodic oxidation of magnesium metal: evidence for the existence of unipositive magnesium1,2, J. Am. Chem. Soc., 76, 363, 10.1021/ja01631a013 Shi, 2012, Galvanostatic anodic polarisation curves and galvanic corrosion of high purity Mg in 3.5% NaCl saturated with Mg(OH)2, Corros. Sci., 60, 296, 10.1016/j.corsci.2011.12.002 Song, 1997, The anodic dissolution of magnesium in chloride and sulphate solutions, Corros. Sci., 39, 1981, 10.1016/S0010-938X(97)00090-5 Ikeuba, 2021, Insitu SVET studies on the current density distribution on dissolving of Mg, MgZn, MgSi and AlCuMgSi surfaces in NaCl solutions, Anti-Corros. Method M Ralston, 2012, Effect of pH on the grain size dependence of magnesium corrosion, Corrosion, 68, 507, 10.5006/i0010-9312-68-6-507 Ikeuba, 2023, Electrochemical investigation of the anodic hydrogen evolution on MgZn2, Mg2Si, and Al4Cu2Mg8Si7 intermetallic phases, J. Solid State Electrochem., 10.1007/s10008-022-05310-y Ukaga, 2023, The inhibitive performance of 2,3-pyrazinedicarboxylic acid and synergistic impact of KI during acid corrosion of 70/30 and 90/10 copper-nickel alloys, J. Mater. Chem. Phys., 10.1016/j.matchemphys.2023.127313 Shi, 2014, Simulating corrosion of Al2CuMg phase by measuring ionic currents, chloride concentration and pH, Corros. Sci., 88, 178, 10.1016/j.corsci.2014.07.021 Thomas, 2013, Revisiting zinc passivation in alkaline solutions, Electrochim. Acta, 97, 192, 10.1016/j.electacta.2013.03.008 Zhao, 2008, Influence of pH and chloride ion concentration on the corrosion of Mg alloy ZE41, Corros. Sci., 50, 3168, 10.1016/j.corsci.2008.08.023