表面活性剂对Ni-纳米TiO_2复合镀层硬度的影响  

Influence of Surfactants on Ni-nano-TiO_2 Composite Coatings

作　　者：冯拉俊[1] 郑玉龙[1] 雷阿利[1] 

机构地区：[1]西安理工大学材料科学与工程学院,陕西西安710048

出　　处：《表面技术》2009年第2期46-48,共3页Surface Technology

摘　　要：针对镍镀层硬度较低,限制了其应用范围的实际,采用纳米复合电镀,提高电镀镍层的机械性能。由于纳米微粒极易团聚,影响了复合镀层的性能。进行了Ni-纳米TiO2复合电镀的表面活性剂筛选,并优选出分散效果较好的阳离子表面活性剂十六烷基三甲基溴化铵(CTAB)和非离子表面活性剂吐温80进行均匀设计和正交回归设计的复配优化来研究其对复合镀层的影响,采用SEM观察镀层表面形貌。通过分析试验结果可知:两者复合的效果较单一使用的效果更好,在镀液中添加0.074g/L的CTAB和0.047g/L吐温80时,得到的复合镀层组织均匀细致,硬度达到最大值621.6HV。The study adopts nanocomposite plating to improve the mechanical property of plating nickel coating specificing to its limit of applied range for low hardness of it. Owing to the easily agglomerated property of nano-particles, first the influence of adding basic ionic surfactant Cetyhrimethylammonium bromide （ CTAB ） , non-ionic surfactant Tween 80 and complex of them in the form of uniform design and orthogonal regression design into Ni-nano-TiO2 composite plating solution was studied. Then the surface topography of coating was characterized by SEM. The result of composite coat-ngs＇ hardness shows that the effect of adding complex of CTAB and Tween 80 is better than a simple one. A composite coating with uniform and fine organization and maximum hardness is obtained when adding 0. 074g/L CTAB and 0. 047g/ L Tween 80 into the composite plating solution, the maximum hardness is 621.6HV.

关 键 词：纳米TIO2 复合镀层 表面活性剂 硬度 

分 类 号：TQ153.2[化学工程—电化学工业]