Evaluation of electrodeposited Mn-Co protective coatings on Crofer 22 APU steel

被引：23

作者：

Molin, Sebastian ^{[1
]}

机构：

[1] Tech Univ Denmark, Dept Energy Convers & Storage, Roskilde, Denmark

来源：

INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2018年 / 15卷 / 02期

关键词：

coatings; microstructure; solid oxide fuel cell; spinels; FERRITIC STAINLESS-STEELS; WATER-CONTENT HYDROGEN; STACK TEST FIXTURE; ELECTRICAL-PROPERTIES; ELECTROPHORETIC DEPOSITION; METALLIC INTERCONNECTS; CANDIDATE MATERIALS; SPINEL COATINGS; SINGLE-CELL; SOFC;

D O I：

10.1111/ijac.12816

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Interconnects used in Solid Oxide Cells stacks require protective coatings to lower their parabolic rate constant and block chromium evaporation (on the air side). In this work four different protective coatings on steel are evaluated for their high temperature corrosion resistance and electrical conductivity. A commercial electroplating process was used for the preparation of coatings with different Mn/Co ratios on Crofer 22 APU steel. Oxidation of samples was performed in air at 800 degrees C for 1000 hours. Postmortem analysis of the coated samples was performed by scanning electron microscopy and x-ray diffractomettry. Based on the results, influence of the Co/Mn ratio on the resulting corrosion properties are discussed. Parabolic rate constant of the coated samples is the lowest for the MnCo sample, whereas electrical resistance is the lowest for the Co sample, which has a corrosion rate similar to the not-coated alloys.

引用

页码：349 / 360

页数：12

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