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A Study on the Palladium Alloy Membrane for Hydrogen Separation

수소 정제용 팔라듐 합금 분리막 연구

  • Woo, Byung-Il (Department of Advanced Materials Engineering, Kyonggi University) ;
  • Kim, Dong-Won (Department of Advanced Materials Engineering, Kyonggi University)
  • 우병일 (경기대학교 재료공학과) ;
  • 김동원 (경기대학교 재료공학과)
  • Published : 2009.10.31

Abstract

This study presented the effect of membrane thickness on hydrogen permeability. Microvoids on the surface of the membrane should not exist for the exact values of hydrogen permeability. Pd-Cu-Ni hydrogen alloy membranes were fabricated by Ni powder sintering, substrate plasma pretreatment, sputtering and Cu reflow process. And this leaded to void-free surface and dense film of Pd-Cu-Ni hydrogen alloy membrane. Hydrogen permeation test showed that hydrogen permeability increased from 2.7 to $15.2ml/cm^2{\cdot}min{\cdot}atm^{0.5}$ as membrane thickness decreased from 12 to $4{\mu}m$. This represented the similar trend as a hydrogen permeability of pure palladium membrane based on solution-diffusion mechanism.

Keywords

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