| [Li Yongquan,Tian Xingda,Wang Cunxi,Li Xuan and Yang Shaolin.Influence of Y2O3 on Microstructures and Oxidation Resis-tance of Cr-Al-Y Coatings Prepared via Pack Cementation on DZ125 Alloy[J].Rare Metal Materials and Engineering,2023,52(1):48~53.] |
| Influence of Y2O3 on Microstructures and Oxidation Resis-tance of Cr-Al-Y Coatings Prepared via Pack Cementation on DZ125 Alloy |
|
Download Pdf View/Add Comment Download reader |
| Received:April 18, 2022 Revised:August 30, 2022 |
| DOI： |
| Key words: DZ125 alloy Y-modified Cr-Al coating Y2O3 oxidation resistance at high temperature |
| Foundation item:国家自然科学基金项目 |
|
| Hits: 123 |
| Download times: 21 |
| Abstract: |
| To further improve the high-temperature service performance of DZ125 alloy, the rare earth element Y-modified Cr-Al co-deposition coating was prepared via the pack cementation method on the DZ125 alloy surface. The effects of Y2O3 content on the oxidation resistance at high temperature and the microstructure and phases of the co-deposition coating were studied. Results show that the Cr-Al-Y coatings prepared under different conditions have a triple-layered structure, which is arranged from the outside to the inside as follows: the Cr+Ni3Cr2 outer layer, the Ni3Cr2+Al13Co4 middle layer, and the Ni3Al inner layer. Both the coating thickness and the density are strongly increased with the addition of 0wt%?2wt% Y2O3, and they are decreased when the content of Y2O3 is further increased to 5wt%. The results of oxidation tests at 1100 °C demonstrate that the Cr-Al-Y coating significantly improves the oxidation resistance of DZ125 alloy at high temperatures. |
