摘要
通过在氟硼酸铅体系中加入适量的固体颗粒,制得Pb-WC-ZrO2复合镀层.主要研究了电沉积工艺条件(搅拌速度、电流密度及电沉积时间)对Pb-WC-ZrO2复合镀层成分、表面形貌和结合力的影响,从而得出最佳固体微粒加入量及工艺条件为:20～30 g/L的ZrO2, 20～30 g/L的WC,搅拌强度500～600 r/min,电流密度2～3 A/dm2,时间2 h.在ZnSO4-H2SO4体系中进行的阳极极化曲线测定表明,此复合镀层适于作惰性阳极材料;电子探针成分分析表明,复合镀层中主要成分是Pb和O,还含有一定量的Zr和W元素,说明ZrO2和WC都沉积到镀层中;X-射线衍射分析表明,镀层中Pb的衍射峰最强,其次为WC的衍射峰,在衍射图中也存在ZrO2的衍射峰但比较微弱.
Pb-WC-ZrO2 composite coatings were prepared with addition of suitable amount of solid particles such as WC and ZrO2 in lead fluoborate system. The influences of process conditions such as agitation rate, current density and electroplating time on the components, surface morphology and adhesion of the composite coating were studied, and thereby the optimal process conditions are obtained as follows： 20 -30 g/L of ZrO2 in bath,20-30 g/L of WC in bath, agitation rate of 500 - 600 r/min,current density of 2 -3 A/dm^2 and plating time of 2 h. The anodic polarization curves of Pb-WC-ZrO2 composite coatings in ZnSO4-H2SO4 system show that the Pb-WC-ZrO2 composite coatings can be used as inert anode materials. The electron probe analysis shows that the main components in Pb-WC-ZrO2 composite coatings are Pb and O, besides some Zr, C and W elements, indicating that there are some ZrO2 and WC particles in the coatings. The X-ray diffraction shows that among the diffraction peaks, the strongest is related to lead, besides some peaks of WC and ZrO2.
出处
《电镀与涂饰》
CAS
CSCD
2005年第8期1-4,共4页
Electroplating & Finishing
作者简介
Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology,Kunming 650093, China （Email）panuin@163．com.
（Email）panuin@163．com.
（Email）panuin@163．com.
（Email）panuin@163．com.
