细长管内孔均匀化学镀镍的研究  

Uniform Electroless Nickel Plating on the Inner Mall of Long Aluminum Tube with Small Diameter

作　　者：王林山[1] 张小勇[1] 林晨光[1] 康志君[1] 楚建新[1] 汪礼敏[1] 

机构地区：[1]北京有色金属研究总院

出　　处：《材料保护》2008年第5期39-41,共3页Materials Protection

摘　　要：采用镀液流动和控制反应温度结合的化学镀方法,实现了=3mm×3000mm的长铝管内孔均匀镀镍,采用一种镀液流动与控制反应温度结合的新型化学镀工艺,利用SEM研究了镀液流速对镍镀层厚度、组织形貌的影响。结果表明:在流速为160～990mL/h范围内,可在该长管内孔沉积一层均匀致密、光亮的镍层;在0～14000mL/h的范围内,随着流速的增加,沉积速度先增加后降低,镀层组织由不致密变得致密再变得疏松多孔。在374mL/h时,最大沉积速度为14μm/h,分别是镀液流速为0mL/h和14000mL/h的2.9倍和8.8倍。A novel technique for electroless nickel plating was established by combining flowing of the plating bath with controlling of the reaction temperature,and it was used to successfully prepare uniform electroless nickel coating on the inner wall of long Al tubes with a small diameter((φ)=3 mm×3 000 mm).The effects of the flux of the electroless plating bath on the thickness and surface morphology of the Ni coating were investigated by means of scanning electron microscopy(SEM).The results showed that a uniform dense and bright nickel coating was obtained on the inner wall of Al tube within a plating bath flux of 160-990 mL/h.The plating rate increased first and then reduced with increasing flow rate ranged from 0-14 000 mL/h,while the Ni coating experienced micro-structure transformation from less dense to dense therewith,followed by transformation to loose microstructure.When the flow rate of the plating bath was kept as 374 mL/h,the maximum plating rate was recorded to be 14μm/h,nearly 2.9 times and 8.8 times as much as that at a plating bath flow rate of 0 mL/h and 14 000 mL/h.

关 键 词：化学镀 细长管 内孔 镀液流速 镀层厚度 组织 形貌 

分 类 号：TQ153.1[化学工程—电化学工业]