https://scholars.lib.ntu.edu.tw/handle/123456789/576873
標題: | Preparation and characterization of cerium-based conversion coating on a Fe50Mn30Co10Cr10 dual-phase high-entropy alloy | 作者: | Chen L.-A Lu Y.-S Lin Y.-T Lee Y.-L. YUEH-LIEN LEE |
公開日期: | 2021 | 卷: | 562 | 來源出版物: | Applied Surface Science | 摘要: | The mechanical properties of the Fe50Mn30Co10Cr10 (at.%) dual-phase high-entropy alloy (DP-HEA) are superior to those of the equiatomic CoCrFeMnNi single-phase HEA. However, poor corrosion resistance due to high manganese content is one of the main factors limiting the potential applications of Fe50Mn30Co10Cr10 DP-HEAs. This study investigated the feasibility of improving the corrosion resistance of Fe50Mn30Co10Cr10 DP-HEAs through the application of a cerium conversion coating to its surface. In addition, this study investigated the effects of bath temperature and the heating process on the formation of the cerium conversion coating. A cerium conversion coating with a thickness of approximately 10–20 nm formed on the DP-HEA surface from cerium conversion baths with various continuous heating processes. The anodic current densities exhibited by the polarization curves decreased, and Tafel extrapolation revealed that the corrosion current densities of the cerium-coated specimens were two to three orders of magnitude lower than that of the untreated DP-HEA. The successful preparation of cerium conversion coatings through continuous bath-heating processes can improve the corrosion resistance of Fe50Mn30Co10Cr10 DP-HEAs. The superior anticorrosion properties of the coating formed by the T70 bath-heating process can be attributed to the increased thickness and large amount of CeO2 in the coating. ? 2021 Elsevier B.V. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85107143080&doi=10.1016%2fj.apsusc.2021.150200&partnerID=40&md5=8ebf459dc9a41357edd856b1362e25e4 https://scholars.lib.ntu.edu.tw/handle/123456789/576873 |
ISSN: | 1694332 | DOI: | 10.1016/j.apsusc.2021.150200 |
顯示於: | 工程科學及海洋工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。