스퍼터 공정변수가 팔라듐 합금 수소분리막의 특성에 미치는 영향
The Effect of Sputtering Process Variables on the Properties of Pd Alloy Hydrogen Separation Membranes
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It is generally recognized that thin Pd-Cu alloy films fabricated by sputtering show a wide range of microstructuresand properties, both of which are highly dependent on the sputtering conditions. In view of this,the present study aims to investigate the relationship between the performance of hydrogen separation membranesand the microstructure of Pd alloy films depending on sputtering deposition conditions such as substratetemperature, working pressure, and DC power. We fabricated thin and dense Pd-Cu alloy membranes bythe micro-polishing of porous Ni support, an advanced Pd-Cu sputtered multi-deposition under the conditionsof high substrate temperature / low working pressure / high DC power, and a followed by Cu-reflow heattreatment. The result of a hydrogen permeation test indicated that the selectivity for H2/N2 was infinite becauseof the void-free and dense surface of the Pd alloy membranes, and the hydrogen permeability was 10.5 ml·cm-2·min−1·atm−1 for a 6 μm membrane thickness.
Abstract
It is generally recognized that thin Pd-Cu alloy films fabricated by sputtering show a wide range of microstructures and properties, both of which are highly dependent on the sputtering conditions. In view of this,the present study aims to investigate the relationship between the performance of hydrogen separation membranes and the microstructure of Pd alloy films depending on sputtering deposition conditions such as substrate temperature, working pressure, and DC power. We fabricated thin and dense Pd-Cu alloy membranes by the micro-polishing of porous Ni support, an advanced Pd-Cu sputtered multi-deposition under the conditions of high substrate temperature / low working pressure / high DC power, and a followed by Cu-reflow heattreatment. The result of a hydrogen permeation test indicated that the selectivity for H2/N2 was infinite because of the void-free and dense surface of the Pd alloy membranes, and the hydrogen permeability was 10.5 ml·cm-2·min−1·atm−1 for a 6 μm membrane thickness
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