摘要
采用由5 g/L Na2SiO3、5 g/L (NaPO3)6和3 g/L Na2WO4·2H2O组成的电解液,在30°C以下对运动器械用铸造Al–Si–Cu铝合金进行微弧氧化30 min。研究了电流密度、占空比和频率对微弧氧化膜厚度、粗糙度、显微结构和耐磨性的影响,得到较优的电参数为:电流密度10 A/dm2,占空比50%,频率600 Hz。在该条件下所得微弧氧化膜由Al、γ-Al2O3和ɑ-Al2O3组成,厚约15μm,表面平整、均匀、致密,粗糙度为0.51μm,耐磨性良好。
The cast Al–Si–Cu alloy for making sports equipment was treated by micro-arc oxidation in an electrolyte comprising Na2SiO3 5 g/L,(NaPO3)6 5 g/L, and Na2WO4·2H2O 3 g/L at temperature 30 °C below for 30 min. The effects of current density, duty cycle, and frequency on the thickness, roughness, microstructure, and wear resistance of micro-arc oxidation film were studied, and their optima were determined as follows: 10 A/dm2, 50%, and 600 Hz. The micro-arc oxidation film obtained under the given conditions is ca.15 μm thick and composed of Al, γ-Al2O3, and α-Al2O3, and has a smooth, uniform, and compact surface with a roughness of 0.51 μm and good wear resistance.
作者
谢宇玲
陈奇俤
罗森
XIE Yu-ling;CHEN Qi-li;LUO Sen(Fujian Chuanzheng Communication College,Fuzhou 350008,China)
出处
《电镀与涂饰》
CAS
CSCD
北大核心
2019年第24期1363-1367,共5页
Electroplating & Finishing
基金
国家自然科学基金（51371040）
关键词
铸造铝合金
运动器械
微弧氧化
电参数
微观结构
耐磨性
cast aluminum alloy
sports equipment
micro-arc oxidation
electric parameter
microstructure
wear resistance
