کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1613709 | 1516315 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ceramics used as intermetallic diffusion barriers in Pd-based composite membranes sputtered on porous nickel supports
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A ceramic barrier was introduced onto the surface of a porous nickel support (PNS) to prevent intermetallic diffusion. Al2O3 and ZrO2 were deposited on the PNS by RF sputtering to a thickness of 200 nm. Pd and Au were then deposited by DC and RF sputtering with thicknesses of 3 μm and 0.5 μm, respectively, on the PNS with the diffusion barrier. The permeation measurement was carried out using hydrogen and helium at 723 K and a pressure difference of 100-2000 kPa. The gas permeation tests confirmed that the hydrogen permeation flux increased with increasing pressure difference and reached 4.07 mol mâ2 sâ1 at 2000 kPa with an H2/He selectivity of more than 5000. The ZrO2 barrier membrane provided a flux of 1.5 times higher than that achieved by the Al2O3 barrier membrane. The sputtering method was successful in depositing intermetallic diffusion barriers and Pd-Au alloy layers.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 578, 25 November 2013, Pages 425-430
Journal: Journal of Alloys and Compounds - Volume 578, 25 November 2013, Pages 425-430
نویسندگان
Chun-Boo Lee, Sung-Wook Lee, Jong-Soo Park, Shin-Kun Ryi, Dong-Wook Lee, Kyung-Ran Hwang, Sung-Hyun Kim,