Open AccessInfluence of NiO to SDC ratio on the properties of Ni-SDC cermet prepared via reduction process
Author(s) -
Salmie Suhana Binti Che Abdullah,
Siti Sarah Ismail
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/701/1/012028
Subject(s) - non blocking i/o , materials science , cermet , porosity , solid oxide fuel cell , ceramic , scanning electron microscope , chemical engineering , analytical chemistry (journal) , metallurgy , composite material , chemistry , anode , chromatography , biochemistry , electrode , engineering , catalysis
This works presents the preparation of Ni-Ce0.8Sm0.2O1.9 (Ni-SDC) ceramic-metal from reduction of NiO-Ce0.8Sm0.2O1.9 (NiO-SDC) ceramics for application of solid oxide fuel cell. NiO-SDC powder with different weight percentage of NiO and SDC (100% NiO + 0% SDC), (80% NiO + 20% SDC), (70% NiO + 30% SDC) and (60% NiO + 40% SDC) was pelletized and sintered at 1400 °C for 4 hours. Then, pellet samples were undergone reduction process using mixed gas of hydrogen and nitrogen gas with concentration of 40% H2 and 60% N2 at 800 °C for 2 h. Phase analysis was done using X-ray Diffraction and it was found that for all samples, NiO was completely reduced to Ni, meanwhile SDC was remained in its phase. The density of the samples decreased after reduction, results in more porous samples were obtained. It was found that increasing NiO content lead to sample with higher porosity. The surface morphology of the samples was observed by using the Scanning Electron Microscopy.