| Authors | رضا ایران خواه,بابک رییسی,امیر مقصودی پور,عبداله ایران خواه,ساسان قشقایی |
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| Journal | J MATER ENG PERFORM |
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| Page number | 1 |
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| Volume number | 25 |
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| IF | 1.049 |
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| Paper Type | Full Paper |
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| Published At | 2016-04-11 |
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| Journal Grade | Scientific - research |
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| Journal Type | Electronic |
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| Journal Country | Iran, Islamic Republic Of |
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| Journal Index | ISI ,SCOPUS |
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| Keywords | cyclic oxidation, Electrophoretic deposition, NiFe2O4, Spinel, SOFC interconnect, solid state reaction |
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Abstract
In the present study, Ni-Fe spinel powder was synthesized via a solid state reaction. In the next step, the
electrophoretic deposition (EPD) method was used to apply the NiFe2O4 spinel, as an oxidation-resistant
layer, on a commercially available stainless steel (SUS 430) in a potential range of 100 to 300 V. Microscopic
studies of the deposited layers showed that crack-free NiFe2O4 films were obtained at 100 V. The coated and
uncoated samples were then pre-sintered in air and 5% H2 bal Ar atmospheres at 900 C for 3 h followed
by cyclic oxidation at 800 C for 500 h. The investigation of the oxidation resistance of the samples using
Energy Dispersive Spectroscopy (EDS) revealed that the NiFe2O4 coating acted as an effective barrier
against chromium migration into the coating. The oxidation resistance of 5% H2 bal Ar pre-sintered sample
was enhanced with an oxidation rate constant (KP) of 8.9310215 g2 cm24 s21.
