摘要
用基于化学镀方法的钯银共沉积和分步沉积2种方法制备了PdAg膜。对比研究了2种方法制备的钯银膜的形貌、相结构、成分均匀性和致密性。实验结果表明共沉积法获得的钯银膜是树枝状的,成分不均匀,且致密性很差。分步沉积获得的钯银膜成分均匀、沿侧面生长趋势好,更适合制备超薄致密的用于氢气分离的钯银合金膜。多层分步镀形成Pd-Ag合金需要更高的温度和更长时间的热处理。Ag层的交替使得Pd的晶粒减小,并且最终沉积的膜表面更光滑。
Both sequential-deposition and co-deposition based on electroless plating method for the preparation of Pd-Ag composite membranes were investigated.The morphology,phase structure,compositional homogeneity and compactness of the prepared membranes were compared.The results show that Pd-Ag membranes prepared by co-deposition are dendritic,inhomogeneous,and poorly compact,while those by multilayer sequential deposition are more homogeneous and compact.The multi-layer sequential deposition requires higher temperature and longer time for annealing to form Pd-Ag alloy.The Pd particles size is decreased by separate Ag layer and the surface of Pd-Ag membrane is smoother.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2017年第12期3688-3692,共5页
Rare Metal Materials and Engineering
基金
The National Key Research and Development Plan(2016YFB0600103)
关键词
PdAg膜
化学镀
共沉积
分步沉积
Pd-Ag composite membrane
electroless plating method
codeposition
sequential deposition
