Cyclic-Oxidation Behavior of Multilayered Pt/Ru-Modified Aluminide Coating  

作　　者：Yingxue Song Hideyuki Murakami Chungen Zhou 

机构地区：[1]Key Laboratory Of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, Beijing 100191, China [2]Coating Materials Group, Hybrid Materials Center, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan

出　　处：《Journal of Materials Science & Technology》2011年第3期280-288,共9页材料科学技术（英文版）

基　　金：sponsored by the Program for New Century Excellent Talents in University (NCET);the National Natural Science Foundation of China (NSFC,Nos.50731001 and 50971013);the National Institute for Materials Science (NIMS) internship program

摘　　要：Multilayered Pt/Ru modified aluminide coating for thermal barrier coating （TBC） systems has been investi- gated. 2μm Pt＋2 μm Ru＋2 μm Pt was first deposited on nickel-base superalloy DZ125 by electrodeposition, and then the coating was treated by annealing and a conventional pack-cementation aluminizing process. The cyclic oxidation tests were carried out at 1423 K in air. It was found that the thermal cyclic oxidation resistance of Pt/Ru-modified aluminide coating was comparable to that of Pt-modified aluminide coating, which was much better than simply aluminized DZ125. The addition of Ru to Pt-modified aluminide coating increased the resistance to rumpling. The microstructures and phase constitutions of the coating before and after oxidation were investigated.Multilayered Pt/Ru modified aluminide coating for thermal barrier coating （TBC） systems has been investi- gated. 2μm Pt＋2 μm Ru＋2 μm Pt was first deposited on nickel-base superalloy DZ125 by electrodeposition, and then the coating was treated by annealing and a conventional pack-cementation aluminizing process. The cyclic oxidation tests were carried out at 1423 K in air. It was found that the thermal cyclic oxidation resistance of Pt/Ru-modified aluminide coating was comparable to that of Pt-modified aluminide coating, which was much better than simply aluminized DZ125. The addition of Ru to Pt-modified aluminide coating increased the resistance to rumpling. The microstructures and phase constitutions of the coating before and after oxidation were investigated.

关 键 词：Pt/Ru-modified Aluminide coating Cyclic oxidation 

分 类 号：TG172.82[金属学及工艺—金属表面处理] TB332[金属学及工艺—金属学]