|
2196 |
|
Research of plasma spraying process of nanostructured zirconia thermal barrier coating |
|
Hongfei Sun / College of Materials Science and Engineering, Shandong University of Science £¦ Technology, China Canming Wang / College of Materials Science and Engineering, Shandong University of Science ?? Technology, China Xiangang Liu/ Technology Division of Zoucheng City, China Zhiyan Qu/ Wear and Corrosion-Resistant Material Research Centre of Shandong Province, China Jixin Bi/ Wear and Corrosion-Resistant Material Research Centre of Shandong Province, China |
|
In this paper, the nanostructured zirconia thermal barrier coatings were prepared on GH3030 high temperature alloy surface by plasma spraying process. The nanostructured agglomerated ZrO2 feedstock was used as initial powders, and the NiCoCrAlY alloy as bond coating material. The relationship between bonding strength and spray current, secondary gas flow and spray distance were analyzed. The optimum parameters were acquired by orthogonal experimental design methods. The microstructures and phase structures of nanostructured zirconia thermal barrier coating were investigated thoroughly by SEM, TEM and X-Ray. |