Plasma electrolytic oxidation of light metals : elucidation of the process and surface functionalization

等离子体电解氧化(PEO)是一种在水溶液中于室温下在镁、铝、钛等轻金属表面形成陶瓷涂层的有吸引力的工艺。本研究揭示了碱性硅酸盐电解液中放电通道的优良愈合性能。在此基础上，开发了一种新型的两步PEO工艺，以在β-Ti合金表面形成具有高机械强度和冷加工性能的耐磨高附着力陶瓷涂层。

Plasma electrolytic oxidation (PEO) is an attractive process to form ceramics coatings on light metals, including magnesium, aluminum and titanium, in aqueous electrolytes at ambient temperature. The present study discloses the excellent healing properties of discharge channels in alkaline silicate electrolyte. Further, novel two-step PEO process is developed to form wear-resistant and highly adherent ceramics coating on β-Ti alloy with high mechanical strength and cold workability.