A chrome-free conversion coating for magnesium–lithium alloy by a phosphate–permanganate solution

Effect of additives on structure and corrosion resistance of ceramic coatings on Mg–Li alloy by micro-arc oxidation

“…Mg-Li alloy can also be used in the carry-home light equipment, automobile, medical and physical appliances for the convenience of movement [3,4]. However, magnesium-lithium alloy possesses poor corrosion resistance, which greatly restricts its application in practice [5]. Hence, many kinds of surface modification techniques are developed for the protection of Mg-Li alloy [6][7][8].…”

The effects of addition of poly(vinyl) alcohol (PVA) as a green corrosion inhibitor to the phosphate conversion coating on the anticorrosion and adhesion properties of the epoxy coating on the steel substrate

“…However, due to toxic and carcinogenic nature of the chromate based conversion coatings, the use of these coatings has been extremely restricted in last decades [15][16]. Therefore, researchers have made efforts to use other environmentally friendly chemicals in recent years.…”

Formation process and properties of phytic acid conversion coatings on magnesium

“…Surface treatments can improve the corrosion resistance of magnesium and its alloys, which have been extensive researched in recently years [4]. In the surface treatment methods, Chemical conversion treatment is an effective and simple method, such as chromate [5], permanganate [6], phosphate [7,8], phosphate/permanganate [9,10], etc. Chromate conversion treatment as a conventional chemical conversion method, it has been widely used in industry for long time.…”