CAJ | 학술논문

采用纳米复合镀技术在铝表面制备了Cu-TiO2纳米复合镀层,利用扫描电镜、电化学测试系统、分光光度计对其形貌、腐蚀和光催化性能进行了研究.结果表明,TiO2纳米颗粒在铜基复合膜层中的分散均匀;TiO2颗粒的加入可使Cu-TiO2纳米复合镀层腐蚀电位明显增加,膜层的耐蚀性提高;在紫外光照射下,复合镀层对甲基橙溶液有明显的光催化降解作用,且这种作用随时间延长而有所增大.
채용납미복합도기술재려표면제비료Cu-TiO2납미복합도층,이용소묘전경、전화학측시계통、분광광도계대기형모、부식화광최화성능진행료연구.결과표명,TiO2납미과립재동기복합막층중적분산균균;TiO2과립적가입가사Cu-TiO2납미복합도층부식전위명현증가,막층적내식성제고;재자외광조사하,복합도층대갑기등용액유명현적광최화강해작용,차저충작용수시간연장이유소증대.
The Cu-TiO2 nanocomposite coating was prepared by nanocomposite plating memoa, and its microstructure, corrosion resistance and photocatalytic property were investigated with SEM/ EDX, electrochemical technology and UV-Vis absorption spectrum. The results show that TiO2 nanoparticles are uniformly distributed in the Cu matrix coating. The electrochemical results show that the Cu-TiO2 nanocomposite coating exhibits much higher corrosion potential and better corrosion resistance than those o{ Cu plating coating and Al substrate in 3.5 % NaCI solution. Under ultraviolet radiation, Cu-TiO2 nanocomposite coating exhibits efficiently photocatalytic degradation effect on methyl orange, and this effect can be enhanced as the degradation time is prolonged.