Ni-ZrO_2纳米复合电铸层表面形貌、组织结构及性能研究  

Study on Surface Morphology, Microstructure and Properties of Ni-ZrO_2Nano-composite Electroforms

作　　者：张文峰[1] 朱荻[1] 

机构地区：[1]南京航空航天大学

出　　处：《中国机械工程》2005年第13期1188-1192,共5页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(50075040);国防基础研究基金资助项目(J1500E002)

摘　　要：通过复合电铸工艺制备Ni-ZrO2纳米复合电铸层,探讨了镀液中纳米ZrO2颗粒悬浮量和电流密度对Ni-ZrO2纳米复合电铸层表面形貌的影响,用SEM、TEM和显微硬度仪对纳米复合电铸层的表面形貌、组织结构和显微硬度进行了分析。结果表明,镀液中纳米ZrO2颗粒悬浮量和电流密度对纳米复合电铸层表面形貌有较大程度的影响。纳米ZrO2颗粒细化了复合电铸层中基质金属的晶粒,使复合电铸层的表面光滑平整,组织均匀、致密,显微硬度大幅度提高。The nano-composite electroforms were prepared by composite electroforming. 'The effects on surface morphology of Ni-ZrO2 nano-composite electroforms, such as ZrO2 concentration in electrolyte and the current density, were discussed. The surface morphology, component, micro-structure and microhardness were analyzed by SEM, TEM and microhardness instrument. Results show that the ZrO2 concentration in electrolyte and the current density affect the surface morphology of Ni-ZrO2 nano-composite electroforms remarkably. Owing to the existence of nano-ZrO2 particles in the composite electroforms, the grain size of the metallic matrix is decreased greatly, and the nano-composite electroform exhibits a flat surface and compact microstructure. Meanwhile, the microhardness of nano-composite electroforms is increased.

关 键 词：纳米复合电铸层 表面形貌 微观结构 显微硬度 

分 类 号：TG174.44[金属学及工艺—金属表面处理]