کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1615648 1516355 2012 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fabrication and characterization of 900 °C-sintered Ni/Cu/YSZ cermet high temperature electrolysis cathode material prepared by high-energy ball-milling method
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Fabrication and characterization of 900 °C-sintered Ni/Cu/YSZ cermet high temperature electrolysis cathode material prepared by high-energy ball-milling method
چکیده انگلیسی

Ni/Cu/YSZ cermet (volume ratio of Ni:Cu:YSZ = 40:20:40) is more electronically conductive than the conventional Ni/YSZ cermet for high temperature electrolysis (HTE) of water vapor and it was successfully fabricated by high-energy ball-milling of nickel, copper, and YSZ powders, pressing into pellets (Ø 10 mm × 1 mm) and subsequent sintering process at 900 °C under flowing 5%-H2/Ar gas. The Ni/Cu/YSZ composite material thus fabricated was characterized using various analytical tools such as SEM, XRD, and laser diffraction and scattering method. Electrical conductivity of sintered Ni/Cu/YSZ cermet pellets fabricated was measured by using 4-probe technique for comparison with that of conventional Ni/YSZ cermet. The effect of ball-milling time on electrical conductivity and microstructure of Ni/Cu/YSZ cermets for HTE was investigated. The particle size of Ni/Cu/YSZ decreased while electrical conductivity increased with milling time: enhanced electrical conductivity is attributed to well-connected Ni/Cu/YSZ particles rendered by increased ball-milling time.


► Ni/Cu/YSZ cermet cathodes were fabricated by high energy ball-milling and sintering.
► Electrical conductivity and microstructure of the cermet cathode were investigated.
► Fabrication of the cermets showed a good prospect for HTE cathode material.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 538, 15 October 2012, Pages 201–204
نویسندگان
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