用海藻酸钠(Sodium Alginate,SA)将四酰胺基大环铁配合物(FeⅢ-TAML)固定在热解石墨电极表面,制成FeⅢ-TAML/SA膜修饰电极。交流阻抗结果显示FeⅢ-TAML可以很好的固定在SA膜中。包埋在SA膜中的FeⅢ-TAML在磷酸盐缓冲溶液(PBS)和乙醇混...用海藻酸钠(Sodium Alginate,SA)将四酰胺基大环铁配合物(FeⅢ-TAML)固定在热解石墨电极表面,制成FeⅢ-TAML/SA膜修饰电极。交流阻抗结果显示FeⅢ-TAML可以很好的固定在SA膜中。包埋在SA膜中的FeⅢ-TAML在磷酸盐缓冲溶液(PBS)和乙醇混合溶液中与电极直接传递电子,得到一对基于Fe(Ⅲ)/Fe(Ⅱ)电对的氧化还原峰,其峰为-0.085V和0.001V(V vs SCE)。研究了扫速及电解质pH值对FeⅢ-TAML的影响,其电化学反应是受表面控制的电极过程,其电势随着PBSpH值的增加而负移且成线性关系,直线斜率为-49.86mV·pH–1,说明FeⅢ-TAML的电子传递过程中伴有质子转移。展开更多
Till now,water based lubricants,especially aqueous solutions,have not been employed in the elastohydrodynamic lubrication(EHL)due to their poor film forming capability or low wear resistance.In this paper,we proposed ...Till now,water based lubricants,especially aqueous solutions,have not been employed in the elastohydrodynamic lubrication(EHL)due to their poor film forming capability or low wear resistance.In this paper,we proposed a method to develop water based lubricant:employing polyalkylene glycol solution as base stock to improve EHL film forming capability and using organic phosphate ester(DPZ)as anti-wear additive to improve wear resistance property.The lubricating properties of the mixed solutions,including load carrying capability,wear resistance property,friction reduction property,EHL film forming behavior,were investigated.The experimental results indicate that the mixed solution presents excellent lubricating properties,which make it a promising candidate in developing water based lubricants.展开更多
文摘用海藻酸钠(Sodium Alginate,SA)将四酰胺基大环铁配合物(FeⅢ-TAML)固定在热解石墨电极表面,制成FeⅢ-TAML/SA膜修饰电极。交流阻抗结果显示FeⅢ-TAML可以很好的固定在SA膜中。包埋在SA膜中的FeⅢ-TAML在磷酸盐缓冲溶液(PBS)和乙醇混合溶液中与电极直接传递电子,得到一对基于Fe(Ⅲ)/Fe(Ⅱ)电对的氧化还原峰,其峰为-0.085V和0.001V(V vs SCE)。研究了扫速及电解质pH值对FeⅢ-TAML的影响,其电化学反应是受表面控制的电极过程,其电势随着PBSpH值的增加而负移且成线性关系,直线斜率为-49.86mV·pH–1,说明FeⅢ-TAML的电子传递过程中伴有质子转移。
基金supported by the National Key Basic Research Program of China(Grant No.2013CB934200)the National Natural Science Foundation of China(Grant Nos.51075227,51222507)
文摘Till now,water based lubricants,especially aqueous solutions,have not been employed in the elastohydrodynamic lubrication(EHL)due to their poor film forming capability or low wear resistance.In this paper,we proposed a method to develop water based lubricant:employing polyalkylene glycol solution as base stock to improve EHL film forming capability and using organic phosphate ester(DPZ)as anti-wear additive to improve wear resistance property.The lubricating properties of the mixed solutions,including load carrying capability,wear resistance property,friction reduction property,EHL film forming behavior,were investigated.The experimental results indicate that the mixed solution presents excellent lubricating properties,which make it a promising candidate in developing water based lubricants.
