Electrodeposited Ni/CeO2 mulriple coating on SUS 430 steel interconnect

• DOI: 10.1016/j.ijhydene.2018.04.117
• Publication Date: 2018-05-05T21:24:35Z
• Authors: Yandong Li; Shujiang Geng; Gang Chen
• Keywords: Non-blocking I/O

Abstract Ni/CeO 2 mulriple coating has been fabricated on SUS 430 steel via electrodepositing approach. 100-h initial and 3-week long-term thermal exposing to air at 800 °C has enunciated that the oxide scale grown on the Ni/CeO 2 coated steel contains an external oxide layer of NiFe 2 O 4 spinel, a middle oxide layer of NiO and an internal oxide layer of Cr 2 O 3 . Simultaneously, dispersive CeO 2 particles embed in the oxide scale. Compared to the Ni coated steel on which the same tri-layer oxide structure without discrete CeO 2 particles grows in the same exposing environment, growth rate of the internal Cr 2 O 3 layer on the Ni/CeO 2 coated steel has been profoundly suppressed, which subsequently lowers the oxide scale area specific resistance (ASR). Enhancement of the oxidation resistance and reduction of the oxide scale ASR are attributed to the presence of CeO 2 .