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

等离子体电解氧化（PEO）是一种在室温下，在水溶液中在轻金属（包括镁、铝和钛）上形成陶瓷涂层的有吸引力的方法。本研究揭示了碱性硅酸盐电解质中放电通道的优异愈合性能。在此基础上，开发了两步PEO工艺，在β-Ti合金表面制备了具有高机械强度和冷加工性能的耐磨、高结合力的陶瓷涂层。

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.