石油化工高等学校学报2012，Vol.25Issue(5)：56-58,67,4.DOI:10.3969/j.issn.1006-396X.2012.05.014
硫脲对Ni-P镀层腐蚀行为的影响
Effect of Thiourea on Corrosion Resistance of Ni-P Coating
摘要
Abstract
The thiourea was added in the electroless plating solution to analyze the influence of thiourea on the Ni桺 coating deposition rate, surface morphology and porosity, etc. . The corrosion resistance was evaluated through polarization curves and electrochemical impedance spectroscopy. The results show that when 1 mg/L thiourea in the electroless plating solution was added, the deposition rate of coating accelerates and the corrosion rate increases. This is mainly reason after thiourea was added in the electroless plating solution, the porosity of coating increases, which promote the corrosive medium to seep deeply into the surface of the substrate resulting in increasing the number of corrosion micro cells and forming a corrosion cell of the large cathodeC coating)the small anode (substrate). The corrosion current density increases and the charge transfer resistance reduces. While thiourea was added more than 3 mg/L, the electroless plating solution is poisoned and unable to plating.关键词
Ni-P镀层/硫脲/孔隙率/腐蚀性Key words
Ni-P coating/Thiourea/Porosity/Corrosion resistance分类
能源科技引用本文复制引用
杨海霞,胡传顺,梁平..硫脲对Ni-P镀层腐蚀行为的影响[J].石油化工高等学校学报,2012,25(5):56-58,67,4.基金项目
辽宁省教育厅科学技术研究项目(LS2010098). （LS2010098）
