摘要
利用电沉积方法制备了n–Al2O3/Ni复合镀层。研究了镀液中添加不同纳米颗粒浓度对复合镀层沉积速率、电流效率、镀层中纳米颗粒共析量、表面形貌及腐蚀电位的影响。研究表明,随着镀液中纳米颗粒浓度提高,镀层中的纳米颗粒共析量也随之提高,在20g/L时趋于稳定;沉积速度和电流效率先增后降,在30g/L时达到最大;纳米颗粒的加入改变并细化了镀层的表面形貌;当纳米颗粒浓度20g/L和30g/L时镀层表现出较好的耐腐蚀性能。
A composite electro-deposited coating of n–Al2O3/Ni was prepared. The effects of concentration of suspended n–Al2O3 powders on the deposition process were studied. The results showed that nano-particle content in the deposit increased with raising the nano-particle concentration in the solution and stabilized at 20 g/L. Deposition rate and current efficiency increased at first and decreased later,and up to maximum at the content of 30 g/L. The surface morphology was changed and refined by nano-particle. The composite coating showed better resistant to corrosion at the nano-particle content of 20 g/L and 30 g/L.
出处
《中国表面工程》
EI
CAS
CSCD
2006年第z1期199-202,共4页
China Surface Engineering
基金
国防预研基金项目(编号略)。
