Ratio of total acidity to pH value of coating bath: A new strategy towards phosphate conversion coatings with optimized corrosion resistance for magnesium alloys

Optimization of the Corrosion Resistance of Electroless Ni–W–P Coatings on Magnesium Alloys by the Response Surface Methodology

“…However, the corrosion resistance of magnesium and magnesium alloys is extremely poor in aqueous solution and the atmospheric environment [7,8]. Electroless Ni-W-P plating has attracted great attention because it can significantly improve the hardness and wear resistance of magnesium alloys [9,10]. Ni-W-P alloy coating has excellent wear resistance and corrosion resistance, in the preparation of the coating on magnesium alloy surface can overcome the low hardness, prone to corrosion of magnesium alloys weaknesses, broadening the scope of the application of magnesium alloys in marine atmosphere environment.…”

Progress in bioactive surface coatings on biodegradable Mg alloys: A critical review towards clinical translation

“…Hence, the density of deposited coating is increased by prolonged immersion in bath media. Additionally, process parameters like concentration, pH, and temperature of bath media play essential roles in coating quality [ 66 ]. Majorly reported chemical conversion coatings on Mg alloys are based on chromates, fluorides, phosphates, and rare earth (RE) elements [ 67 ].…”

Endowing magnesium with the corrosion-resistance property through cross-linking polymerized inorganic sol–gel coating

“…Potentiodynamic polarization (PDP) curves are a common technique to quantify the instant corrosion kinetics of bare and coated Mg specimens in a corrosive electrolyte, such as the NaCl solution. [27][28][29][30][31] To examine the protective function of SiZr-GH sol-gel coatings on pure Mg, PDP curves were recorded in a 0.6 M neutral NaCl solution over a potential range from À150 mV to 600 mV vs. the open circuit potential (OCP). It is evident that the polarization curves of all coatings shied to the lower corrosion current density region and both cathodic and anodic current densities reduced but to different extents (Fig.…”