选用ZL102合金作为一种新型封装基板的中间镀层进行阳极氧化试验,制备厚的多孔层阳极氧化膜.研究了电解液、电流密度、温度、时间对阳极氧化膜的形貌特征、孔隙率、厚度、硬度、耐压性和热阻性能的影响,得到了综合性能最佳的厚膜实验条件.结果表明:ZL102 铝合金在不同的电解液(硫酸、硫酸-草酸、硫酸-酒石酸、硫酸-柠檬酸)、电流密度(2～6 A/dm2)、温度(10～30℃)、时间(80～160 min)下均能形成颜色均一、表面光滑的氧化膜.综合性能最佳的厚阳极氧化膜的工艺条件为:硫酸-草酸为电解液,电流密度6 A/dm2,温度15℃,时间80 min.
Study on surface anodizing and properties of ZL102
ZL102 alloy was selected as the intermediate coating of a new type of packaging substrate for anodic oxidation test,and thick porous anodic oxidation film was prepared.The influence of differ-ent electrolyte,current density,temperature and time on the morphology,porosity,thickness,hard-ness,pressure resistance and thermal resistance of the anodic oxidation film was studied,and the exper-imental conditions of the thick film with the best comprehensive performance were obtained.The results show that ZL102 aluminum alloy in different electrolyte(sulfuric acid,sulfuric acid-oxalic acid,sulfu-ric acid-tartaric acid,sulfuric acid-citric acid),different current density(2‒6 A/dm2),different temper-ature(10‒30℃)and different time(80‒160 min)can form a uniform color,smooth surface oxide film.The optimum conditions of thick anodic oxide film were as follows:sulfuric acid-oxalic acid as electrolyte,current density of 6 A/dm2,temperature of 15℃and time of 80 min.
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