采用渗透压-化学镀联合法共沉积钯银制备陶瓷负载型钯-银无机复合膜.研究了渗透压对化学镀共沉积钯银的沉积速度、镀层组成和膜表面结构性能的影响.结果表明,化学镀中引入渗透压,可提高钯-银的共沉积速度、改善膜的致密程度和结合程度,但对镀层的组成无明显影响.用扫描电镜、ICP原子发射光谱和称重法对膜结构进行表征.制备的钯-银顶膜厚约8 μm,银的摩尔分数为23.6%,在350 ℃和0.3 MPa下,膜的氢渗透通量为8.4×10-3m3/(m2*s),H2/N2分离因子4000.
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