文献类型：期刊文献

英文题名：A novel spinel coating on cobalt-based Superalloy GH605 via an in-situ oxidation approach

作者：Zhang, Kai[1];Liu, Jinglei[1];Bao, Binbin[1];Xu, Hong[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2018

卷号：50

期号：4

起止页码：448

外文期刊名：SURFACE AND INTERFACE ANALYSIS

收录：;EI(收录号：20180604703005);WOS:【SCI-EXPANDED(收录号:WOS:000427018800006)】；

语种：英文

外文关键词：Cr-Mn-O spinel coating; GH605; H-2-H2O; selective oxidation

摘要：Cr-Mn-O spinel coating was prepared on the surface of cobalt-based superalloy GH605 via an in-situ oxidation method in H2O-H-2 environment. The composition, morphology, and chemical value state of the oxide spinel coatings were investigated by SEM, EDS, XRD, Raman spectra, and XPS. It indicated that the morphology of coating varied with oxidation temperature, and granular surface appeared when oxidation temperature increased to 1100 degrees C. The formed Cr-Mn-O spinel coating was composed of Cr2O3 and MnCr2O4, and the thickness increased significantly with oxidation temperature. In the coating, Cr element existed in the state of Cr3+ ions and Cr6+ ions, while Mn element only existed in the form of Mn2+ ions.