Dissolution and diffusion behavior of solid Mn in Mg melt

Surface composition, microstructure and corrosion resistance of AZ31 magnesium alloy irradiated by high-intensity pulsed ion beam

The calcium content in the binary as-cast Mg-xCa alloy will affect the microstructure and mechanical properties of the alloy. In this study, five magnesium alloys with different calcium content were prepared by casting process. Then, the five kinds of alloy components were tested and the microstructure was observed, and the change trend of the hardness of the as-cast alloy was obtained with the increase of Ca content. The corrosion resistance of the as-cast magnesium alloy was tested by electrochemical experiments and corrosion immersion experiments. It is found that the addition of an appropriate amount of Ca can increase the hardness of the magnesium alloy and improve the corrosion resistance of the magnesium alloy. It is concluded that the corrosion resistance of magnesium alloy can be controlled by controlling the calcium content.

Effect of minor Ca addition on microstructure and corrosion behavior of Mg–Y–Ca alloys

Corrosion Resistance of AZ91D Magnesium Alloy Modified by Rare Earths-Laser Surface Treatment

Carbon-free SiOx ultrathin film using atmospheric pressure plasma jet for enhancing the corrosion resistance of magnesium alloys

In this study, the degradable superhydrophobic Mg/P/Z/F/H (magnesium/poly(-caprolactone)/zinc oxide/1H,1H,2H,2H-perfluorodecyltriethoxysilane (PFDTES)/heating process) composite materials were prepared through dip-coating method and heating process, for enhancing the corrosion resistance of the AZ91D magnesium alloys. The electrochemical measurements revealed that the Mg/P/Z/F/H materials significantly improved the corrosion resistance of the magnesium alloys in 3.5 wt.% NaCl. The Mg/P/Z/F/H composite materials exhibited efficient self-cleaning properties, good adhesion strength, and stability in wet atmosphere.

Enhancing biocompatibility and corrosion resistance of PEO-treated magnesium alloys with polylactic acid coatings for degradable bone implants

Due to its lightweight structure, magnesium alloys have been widely used in the automotive and aerospace industries. However, the corrosion resistance of magnesium alloy is a key factor limiting their further application. Rare earth alloying is an economical and effective method to improve the corrosion resistance of magnesium alloys. In this work, Mg–2Y–2Al (wt%) alloy was prepared by conventional casting method. After 168 h of immersion in 3.5 wt% NaCl solution, the corrosion rates determined by hydrogen evolution test and mass loss experiment were 0.57 mm/y and 1.01 mm/y, respectively. The results provide a basic understanding of the synergistic effect of Al and Y on enhancing the corrosion resistance of magnesium alloys. The co-addition of Al and Y is conducive to the formation of a stronger protective film on the alloy surface and effectively inhibits the corrosion of alloys. It provides important insights for the future development of high-performance and corrosion-resistant magnesium alloys.

Narrow pH response multilayer films with controlled release of ibuprofen on magnesium alloy.

The poor corrosion resistance of magnesium alloys is one of the major obstacles to their widespread applications in the engineering field and the medical field. A hot deformation process is the main way to improve the corrosion resistance of magnesium alloys. In the present study, X-ray photoelectron spectroscopy (XPS), a scanning electron microscope (SEM), an electron probe micro-analyzer (EPMA) and X-ray diffraction (XRD) were used to investigate the micro-galvanic corrosion behavior and film protection mechanism of hot-rolled Mg-2Zn-2Er-0.3Zr-0.3Mn under 25%, 50% and 75% thickness reductions in Hank’s solution. The results revealed that the best corrosion resistance was obtained in the alloy under a 75% thickness reduction, with a corrosion rate of 0.85 mm/y. The improvement in anti-corrosion was due to the coupling effect of a refined microstructure and dense degradation film on the large deformation hot-rolled alloy. Furthermore, the elements Mn and Er participated in the film formation and stabilized the film structure.

Effects of organic acid pickling on the corrosion resistance of magnesium alloy AZ31 sheet

Simultaneous improvement of electromagnetic shielding effectiveness and corrosion resistance in magnesium alloys by electropulsing

An approach to fabricating protective coatings on a magnesium alloy utilising alumina

Enhancing corrosion resistance of hydrothermally-treated magnesium-aluminum alloys by preprocessed metallurgical microstructure

Enhanced corrosion resistance of magnesium alloy by plasma electrolytic oxidation plus hydrothermal treatment