摘要
利用AlCl3+LiAlH4的四氢呋喃-苯有机溶剂体系在低碳钢Q235基体上进行了镀铝实验,并就不同电镀时间和电流密度对铝镀层的结构、表面形貌、晶粒尺寸、镀层厚度、结合力及耐蚀性等进行了研究。结果表明,采用AlCl3+LiAlH4的四氢呋喃-苯体系在低碳钢镀铝是可行的,铝镀层表面光滑、均匀,并呈现不规则的颗粒状或块状的生长特性。铝镀层的厚度和晶粒尺寸随电流密度和电镀时间的增加而增大;铝镀层与碳钢基体间的结合力良好,且铝镀层具有较好的耐蚀性能。铝镀层的最佳工艺为电流密度2～4A/dm2,电镀时间30～60min。
Aluminum electrodeposition on Q235 low-carbon steel from AlCl3＋LiAlH4 organic solvent was carried out, and the structure, surface morphology, crystal size, thickness, adhesion and corrosion resistance of aluminum coating at different plating times and current densities were examined. The results show that the electroplating of aluminum on Q235 steel from AlCl3＋LiAlH4 organic solvent is feasible. The deposited aluminum coating is smooth, uniform assuming irregular growth feature characterized by granular or lump formation. The thickness and the particle size of aluminum coating increase obviously with increasing current density and electroplating time. The aluminum coating has good adhesion to the substrate and very high corrosion resistance. The optimal process conditions are as follows： Current density of 2 - 4 A/dm^2 and electro-plating time of 30 - 60 minutes.
出处
《电镀与涂饰》
CAS
CSCD
2007年第2期9-12,共4页
Electroplating & Finishing
基金
国家自然科学基金委员会
中国工程物理研究院NSAF联合基金资助项目(No.10376023)。
关键词
AlCl3+LiAlH4有机溶剂
电镀铝
低碳钢
表面形貌
耐蚀性
AlCl3＋LiAlH4 organic solvent
aluminum electroplating
low-carbon steel
surface morphology
corrosion resistance
