摘要
本研究将渗透压应用于化学镀共沉积钯银过程 ,制备了顶膜厚为 8μm、组成为 76 .4Pd - 2 3.6Ag的陶瓷负载型无机复合膜 .重点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 .实验结果表明 ,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提高膜的结合程度 ,但对镀层的组成无明显影响 .在 35 0℃和 0 .3MPa下 ,膜的氢渗透系数为 3.0 7× 10 -12 moL·cm/cm2 ·s·pa0 .5,H2 /N2 分离因子达 4 0 0 0 .
The osmosis was introduced in electroless plating process for simultaneous deposition of Pd-Ag in this experiment.A ceramic supported Pd/Ag inorganic composite membrane with thickness of 8 μm and compositions of 76.4Pd-23.6Ag(at.%) was prepared.More attention was focused on the effects of osmosis on the deposition speed,compositions,surface structure properties of the simultaneously deposited Pd-Ag alloy top layer by electroless plating.The experiment shows that the introduction of osmosis into electroless plating can increase the co-deposition speed,improve the densification and increase the combination extent of the film,but does not obviously influence its compositions.The hydrogen permeability coefficient and H 2/N 2 separation factor of the film are 3.07×10 -12 moL·cm/cm 2·s·pa 0.5 and 4 000 at 350 ℃ and 0.3 MPa, respectively.
出处
《南昌大学学报（工科版）》
CAS
2002年第2期43-46,共4页
Journal of Nanchang University(Engineering & Technology)
关键词
共沉积
化学镀
渗透压
钯
银
无机复合膜
electroless plating
osmosis
composite membrane
palladium
silver
