多层分步镀方法制备用于氢气分离的Pd-Ag膜（英文）  

Synthesis of Pd-Ag Membranes by Electroless Plating for H_2 Separation

作　　者：李亚宁[1] 康新婷[1] 汤慧萍[1] 王建[1] 

机构地区：[1]西北有色金属研究院金属多孔材料国家重点实验室,陕西西安710016

出　　处：《稀有金属材料与工程》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)

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.

关 键 词：PdAg膜 化学镀 共沉积 分步沉积 

分 类 号：TQ051.893[化学工程] TQ116.2