کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1788516 | 1524162 | 2008 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Preparation and high-temperature characterisation of nanostructured alumina ceramic membranes for gas purification Preparation and high-temperature characterisation of nanostructured alumina ceramic membranes for gas purification](/preview/png/1788516.png)
Porous anodic alumina discs supporting palladium films as elements of hydrogen-purifying membranes have been examined for their high-temperature behaviour. The method employed to fabricate the porous alumina support is the so-called ‘hard anodising’ technique, which offers substantially higher growth rates while producing mechanically robust films. These alumina membranes were found to possess a thermal stability better than commercial Anopore® membranes. Upon long-term exposure at 800 °C they transform into γ-alumina without major deformation. Ultra-thin palladium films deposited across the alumina pores by physical vapour deposition are continuous and stable in reducing atmospheres to at least 700 °C but are oxidised and destroyed by heating in air.
Journal: Current Applied Physics - Volume 8, Issues 3–4, May 2008, Pages 451–454