IMR OpenIR
Effects of Dy on cyclic oxidation resistance of NiAl alloy
Alternative TitleEffects of Dy on cyclic oxidation resistance of NiAl alloy
Guo Hongbo1; Wang Xiaoyan1; Li Ji3; Wang Shixing1; Gong Shengkai1
2009
Source PublicationTRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
ISSN1003-6326
Volume19Issue:5Pages:1185-1189
AbstractThe NiAl alloys modified by reactive element(R-E), dysprosium(Dy), were produced by arc melting. The microstructures of the modified alloys were investigated by field emission-scanning electron microscope(FE-SEM) equipped with energy dispersive spectroscope(EDS) and back scatter detector. Cyclic oxidation tests at 1 200 degrees C were conducted to assess the cyclic oxidation performance of the alloys. The Dy dopant prevents the surface rumpling of the oxide scale and the formation of cavities beneath the oxide scale. The pegs consisting of Dy-rich oxide inclusion core and an outer alumina sheath develop deeply in the alloy and improve the oxide scale adhesion. 0.05%-0.1% (molar fraction) Dy dramatically improves the cyclic oxidation resistance of the NiAl alloy. Too high concentration of Dy is deleterious because of the fast oxidation rate caused by severe internal oxidation.
Other AbstractThe NiAl alloys modified by reactive element(RE), dysprosium(Dy), were produced by arc melting. The microstructures of the modified alloys were investigated by field emission-scanning electron microscope(FE-SEM) equipped with energy dispersive spectroscope(EDS) and back scatter detector. Cyclic oxidation tests at 1 200 ℃ were conducted to assess the cyclic oxidation performance of the alloys. The Dy dopant prevents the surface rumpling of the oxide scale and the formation of cavities beneath the oxide scale. The pegs consisting of Dy-rich oxide inclusion core and an outer alumina sheath develop deeply in the alloy and improve the oxide scale adhesion. 0.05%-0.1% (molar fraction) Dy dramatically improves the cyclic oxidation resistance of the NiAl alloy. Too high concentration of Dy is deleterious because of the fast oxidation rate caused by severe internal oxidation.
KeywordTHERMAL BARRIER COATINGS HIGH-TEMPERATURE SCALE ADHESION GROWN OXIDE BOND COAT BEHAVIOR SULFUR PERFORMANCE HAFNIUM NiAl reactive element dysprosium(Dy) oxidation adhesion
Indexed ByCSCD
Language英语
Funding Project[National Natural Science Foundation of China] ; [Program for Changjiang Scholars and Innovative Research Team in Chinese University]
CSCD IDCSCD:3712107
Citation statistics
Cited Times:7[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/150609
Collection中国科学院金属研究所
Affiliation1.Beijing Univ Aeronaut & Astronaut, Dept Materials Sci & Engn, Beijing 100083, Peoples R China
2.Beijing Univ Aeronaut & Astronaut, Beijing Key Lab Adv Funct Materials & Thin Film Technol, Beijing 100083, Peoples R China
3.中国科学院金属研究所
Recommended Citation
GB/T 7714
Guo Hongbo,Wang Xiaoyan,Li Ji,et al. Effects of Dy on cyclic oxidation resistance of NiAl alloy[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2009,19(5):1185-1189.
APA Guo Hongbo,Wang Xiaoyan,Li Ji,Wang Shixing,&Gong Shengkai.(2009).Effects of Dy on cyclic oxidation resistance of NiAl alloy.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,19(5),1185-1189.
MLA Guo Hongbo,et al."Effects of Dy on cyclic oxidation resistance of NiAl alloy".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 19.5(2009):1185-1189.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Guo Hongbo]'s Articles
[Wang Xiaoyan]'s Articles
[Li Ji]'s Articles
Baidu academic
Similar articles in Baidu academic
[Guo Hongbo]'s Articles
[Wang Xiaoyan]'s Articles
[Li Ji]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Guo Hongbo]'s Articles
[Wang Xiaoyan]'s Articles
[Li Ji]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.