脉冲电沉积纳米镍镀层摩擦磨损性能的研究  

Tribological properties of the nanocrystalline nickel coating synthesized by pulse electrodeposition

作　　者：项忠楠[1] 戴品强[1] 王涛[1] 江勇[1] 

机构地区：[1]福州大学材料科学与工程学院,福建福州350002

出　　处：《金属热处理》2008年第5期53-56,共4页Heat Treatment of Metals

基　　金：福建省科技计划重点项目(2006H0020);福建省自然科学基金项目(E0410011)

摘　　要：采用脉冲电沉积的方法制备纳米镍镀层,研究了纳米镍镀层的微观组织结构,考察了脉冲电流密度和外加载荷对纳米镍镀层摩擦磨损性能的影响。结果表明,脉冲电沉积方法制备的纳米镍镀层的晶粒均匀致密;电流密度的增大使得纳米镍镀层晶粒尺寸减小,显微硬度和耐磨性提高;随着晶粒尺寸的减小,纳米镍镀层磨损机制从粘着磨损转变为磨料磨损。Nanocrystalline Ni （nc-Ni） coating was synthesized by pulse electrodeposition. The microstructures of the coatings were analyzed. The effects of pulse electric current density and testing load on the tribological properties of nanocrystalline nickel coating were investigated. The results show that the grain sizes in the coatings prepared by pulse electrodeposition are uniformity. The microhardness and wear-resistance of nanocrystalline nickel coating increase because of decreasing the grains sizes along with the increasing of pulse electrical current density, and the wear mechanism of the nanocrystalline nickel coating was changed from adhesive wear to abrasive wear.

关 键 词：脉冲电沉积 纳米镍 摩擦磨损性能 

分 类 号：TG161.1[金属学及工艺—热处理] TG174.441[金属学及工艺—金属学]