电沉积工艺参数对Ni-TiN-CeO_2二元纳米复合镀层中粒子复合量的影响  

Effects of electrodeposition process parameters on particle contents of Ni-TiN-CeO_2 composite coating

作　　者：吴蒙华[1] 刘娜娜[1] 李智[1] 

机构地区：[1]大连大学机械工程学院,辽宁大连116622

出　　处：《功能材料》2012年第19期2657-2660,2665,共5页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50975034);辽宁省科技计划资助项目(2010223006)

摘　　要：采用超声-脉冲电沉积法制备了Ni-TiN-CeO2二元纳米复合镀层,研究了工艺参数对镀层中CeO2及TiN粒子复合量的影响,并对镀层的表面形貌及成分进行了测试和分析。结果表明,超声-脉冲电沉积Ni-TiN-CeO2纳米复合镀层的最佳工艺参数为阴极电流密度4A/dm2,TiN粒子添加量15g/L,CeO2粒子添加量40g/L,正向脉冲占空比20%,超声波功率180W。在该工艺条件下,可获得CeO2质量分数为3.3%、TiN质量分数为4.4%的Ni-TiN-CeO2二元纳米复合镀层。同时,TiN与CeO2二元纳米粒子的加入,充分发挥了两种纳米粒子复合的协同效应,优化了粒子与基质金属的共沉积方式,大大改善了镀层质量。Ni-TiN-CeO2 binary nanocomposite coatings were prepared by ultrasonic-pulse electrodeposition, the effects of the electrodeposition process parameters on the particle content of the Ni-TiN-CeO2 composite coating were reasearched, the surface morphology and composition of the composite coating were also analysed. The re- sults showed that the optimal process parameters of the nanocomposite coating prepared by ultrasonic-pulse electrodeposition was： cathode current density of 4A/dm2 , adding amounts of TiN particles was 15g/L, adding amounts of CeO2 particles was 40g/L, positive pulse duty cycle of 20%, ultrasonic power of 180W. Under these optimum conditions, we could prepare Ni-TiN-CeO2 binary nanocomposite coatings with CeO2 and TiN particles mass fraction of 3.3% and 4.4% respectively. Meanwhile, with CeO2 and TiN particles adding to the bath, the composites of the two kinds of nanoparticles gave full play to the synergies, and optimized the sedi- mentary way of particles and metal matrix, the quality of the coatings was improved greatly.

关 键 词：脉冲电沉积 超声波 Ni-TiN-CeO2 二元纳米复合镀层 粒子复合量 

分 类 号：TQ153[化学工程—电化学工业]