表面技术2026，Vol.55Issue(6)：241-250,10.DOI:10.16490/j.cnki.issn.1001-3660.2026.06.018
低共熔溶剂中TC4合金阳极氧化制备高饱和度着色膜
Preparation of High Saturation Colored Films on TC4 Alloys by Anodic Oxidation in Deep Eutectic Solvents
摘要
Abstract
To solve the issue that the product color types obtained by anodic oxidation of Ti-6Al-4V(TC4)alloys in water-based electrolyte are limited and the toxicity of the electrolyte is high,a choline-ethylene glycol-H2O deep eutectic solvent(ChCl-EG-H2O DES)is used as the anodic oxidation coloring electrolyte to treat TC4 alloys.The influence of water content in DES on the color and thickness of the oxide film is studied,and the composition of the oxide film,as well as the corrosion resistance and wear resistance of TC4 alloys after coloring treatment are investigated.By using the constant voltage method for anodic oxidation in ChCl-EG-H2O DES,high saturation and uniform coloring of titanium alloy products can be achieved within 10 s.After anodic oxidation of TC4 alloys at 0%to 100%water content,it can controllably present colors such as gray,yellow,gold,orange,brown,purple,blue,etc.However,when the water content exceeds 15%,the color of the film begins to cycle.Combining chromatographic calculations,it is indicated that the thickness of the oxide film obtained by anodic oxidation of titanium alloy in different water content DES is different.When the water content in DES is 15%,the thickness of the oxide film reaches its maximum value of 100.51 nm.Further increasing the water content causes the thickness of the oxide film to begin to decrease,which is consistent with the phenomenon of color cycling.The phase detection results show that the composition of the coloring film on the surface of TC4 alloys is mainly TiO2 and Al2O3.EDS results show that Ti,Al,V and O are uniformly distributed on the film.When the water content in DES is 15%,the oxygen content increases from 6.2%(untreated titanium alloy)to 14.9%(colored titanium alloy),and then decreases at higher water contents,which is consistent with the trend of thickness.The corrosion resistance and wear resistance tests show that the corrosion current density of TC4 alloys after coloring decreases by 54%,and the average friction coefficient is reduced from 0.37 to 0.19.The 3D optical profilometry measurement shows that the maximum deformation height of the colored titanium alloy is 0.99 μm,while that of the uncolored titanium alloy is 1.16 μm.Although the wear amounts are similar,the deformation amount of the colored titanium alloy is less than that of the uncolored titanium alloy.This indicates that oxidation coloring mainly enhances the shear strength and deformation resistance of the titanium alloy surface,without significantly increasing its hardness.This study can achieve a wider color range of titanium alloy anodic oxidation coloring by adjusting the water content in the ChCl-EG-H2O DES electrolyte,and solve the problem of high toxicity of the traditional electrolyte.The corrosion resistance and wear resistance of TC4 alloys after coloring have been improved.This research method provides new ideas and environmentally friendly processes for the anodizing coloring of titanium alloys,and opens up new avenues for their diversified applications.关键词
钛合金/低共熔溶剂/阳极氧化/着色/耐蚀性/耐磨性Key words
titanium alloy/deep eutectic solvent/anodic oxidation/coloring/corrosion resistance/wear resistance分类
通用工业技术引用本文复制引用
周智鹏,朱霖,陆连伍,夏雯怡,汝娟坚,华一新..低共熔溶剂中TC4合金阳极氧化制备高饱和度着色膜[J].表面技术,2026,55(6):241-250,10.基金项目
云南省重大科技专项(202202AG050007) （202202AG050007）
云南省重大科技专项(202302AG050008) （202302AG050008）
省部共建复杂有色金属资源清洁利用国家重点实验室优青项目(YXQN-2024005) （YXQN-2024005）
云南省科学技术普及专项(202604AM350039) The Yunnan Major Scientific and Technological Projects(202202AG050007) （202604AM350039）
The Yunnan Major Scientific and Technological Projects(202302AG050008) （202302AG050008）
The Excellent Youth Scholars Program of State Key Laboratory of Complex Nonferrous Metal Resource Clean Utilization,Kunming University of Science and Technology(YXQN-2024005) （YXQN-2024005）
Yunnan Provincial Special Project for Science and Technology Popularization(202604AM350039) （202604AM350039）
