Open AccessThe influence of substrate surface treatment on the electrodeposition of (Co,Mn)3O4 spinel precursor coatings
Author(s) -
Huihui Zhang,
Yanjia Liu,
Juntao Yuan,
Ming Zhu,
Jie Chen,
Zhihua Wang
Publication year - 2020
Publication title -
materials research express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.383
H-Index - 35
ISSN - 2053-1591
DOI - 10.1088/2053-1591/aba349
Subject(s) - spinel , materials science , nucleation , alloy , oxide , metallurgy , chemical engineering , substrate (aquarium) , metal , layer (electronics) , hydroxide , adhesion , composite material , chemistry , oceanography , organic chemistry , engineering , geology
The electrodeposition of (Co,Mn) 3 O 4 spinel precursor layers has emerged as a new method to prepare metallic interconnect coatings for solid oxide fuel cells (SOFCs). (Co,Mn) 3 O 4 spinel films can be obtained via the oxidative heat treatment of an electrodeposited Co-Mn alloy layer. Herein, the effects of sandblasting stainless-steel substrates on the electrodeposition of the Co-Mn alloy were investigated. Sandblasting increased Co content in Co-Mn alloy, decreased the onset time of nucleation, and lead to surface nanocrystallization. Furthermore, sandblasting the substrate prevented the formation of the metal hydroxide interlayer, accelerated interdiffusion, and improved the adhesion of the (Co,Mn) 3 O 4 spinel coatings.