空气气氛热处理对Pd膜氢渗透性能的影响  

Effect of Heat Treatment in Air on Hydrogen Permeation Through Pd Membrane

作　　者：殷朝辉 李帅 杜淼 米菁 于庆河 郝雷 YIN Zhao-hui;LI Shuai;DU Miao;MI Jing;YU Qing-he;HAO Lei(China General Research Institute for Nonferrous Metals(GRINM)Group Co.Ltd.,National Engineering Research Center of Nonferrous Metals Materials and Products for New Energy,Beijing 100088,China;GRIMAT Engineering Institute Co.Ltd.,Beijing 101407,China)

机构地区：[1]中国有研科技集团有限公司、国家有色金属新能源材料与制品工程技术研究中心,北京100088 [2]有研工程技术研究有限公司,北京101407

出　　处：《核化学与放射化学》2024年第2期111-117,I0003,共8页Journal of Nuclear and Radiochemistry

基　　金：北京市自然科学基金项目(2212039)。

摘　　要：为了研究空气气氛热处理对Pd膜氢渗透性能的影响,采用化学镀沉积Pd膜,并对在573 K空气气氛热处理前后的Pd膜氢渗透性能进行分析评价。用X射线衍射(XRD)、扫描电子显微镜(SEM)、原子力显微镜(AFM)和氢渗透方法对Pd膜进行了表征,结果表明:沉积态Pd膜结构致密无缺陷,厚度为5μm左右,Pd膜在673、723、773 K的氢渗透率分别为3.62×10^(-9)、5.12×10^(-9)、6.80×10^(-9)mol/(m·s·Pa^(0.5))。573 K空气气氛热处理会导致Pd膜表面粗糙度增加,表面积增大,氢在膜表面的解离吸附位点增加,进而提升膜的氢渗透性能。热处理后,Pd膜在673、723、773 K的氢渗透率分别为5.32×10^(-9)、6.44×10^(-9)、7.31×10^(-9)mol/(m·s·Pa^(0.5)),较热处理前提高了1.1~1.5倍。In order to study the effect of heat treatment in air on the hydrogen permeation in/through Pd membrane,Pd membrane was deposited via the electroless plating method and the hydrogen permeation flux of Pd membrane before and after heat treatment in air at 573 K was measured.The membranes were characterized by XRD,SEM,AFM and hydrogen permeation tests.The results show that Pd membrane is compact and defect-free and has a thickness of 5μm.The hydrogen permeability of Pd membrane at 673 K,723 K and 773 K are 3.62×10^(-9),5.12×10^(-9)mol/(m·s·Pa^(0.5))and 6.80×10^(-9)mol/(m·s·Pa^(0.5)),respectively.The membrane treated in air at 573 K has higher surface roughness,larger surface area and more dissociation adsorption sites than the as-deposited membrane,thus improving the hydrogen permeability of the Pd membrane.After heat treatment,the hydrogen permeability of Pd membrane at 673,723 K and 773 K are 5.32×10^(-9),6.44×10^(-9)mol/(m·s·Pa^(0.5))and 7.31×10^(-9)mol/(m·s·Pa^(0.5)),respectively.The hydrogen permeability of such Pd membrane is 1.1-1.5 times higher than that of the as-deposited one.

关 键 词：PD膜 空气气氛热处理 氢渗透 

分 类 号：TK91[动力工程及工程热物理]