【摘要】 采用正交试验和单因素试验研究了在6063铝合金上低温快速制备钛锆转化膜的工艺,得到的最佳转化液配方为:H₂TiF₆2.0 g/L,H₂ZrF₆ 0.8 g/L,氧化剂（偏钒酸钠）3.0 g/L,配位剂（单宁酸）4.0 g/L,pH=3.2。X射线光电子能谱的分析结果显示,膜层的主要组分为金属氧化物（Al₂O₃、VO₂、V₂O₅、ZrO₂、TiO₂）、金属氟化物（AlF₃、ZrF₄）及金属有机配位化合物。不同低温条件下工艺的最佳成膜时间为:5℃,300～350 s;10℃,150～200 s;15℃,100～150 s;20℃,60～120 s。更多还原

【Abstract】 The rapid formation of Ti–Zr-based conversion coating on 6063 aluminum alloy at low temperatures was studied by orthogonal test and single-factor experiments.The optimal composition of the conversion solution was obtained as follows:H₂TiF₆ 2.0 g/L,H₂ZrF₆ 0.8 g/L,sodium metavanadate（as oxidant）3.0 g/L,tannic acid（as complexing agent）4.0 g/L,and p H=3.2.The X-ray photoelectron spectra showed that the main components of the coating were metal oxides（Al₂O₃,VO₂,V₂O₅,ZrO₂,TiO₂）,metal fluorides（AlF₃,ZrF₄）,and metal organic complexes.The optimal film forming time under different temperatures were listed as follows:300-350 s for 5℃,150-200 s for 10℃,100-150 s for 15℃,and 60-120 s for 20℃.更多还原