IMR OpenIR
Transient oxidation behavior of nanocrystalline CoCrAlY coating at 1050℃
Alternative TitleTransient oxidation behavior of nanocrystalline CoCrAlY coating at 1050℃
LIU Guangming1; LI Meishuan1; MA Jinghui2; DU Nan2; ZHOU Yanchun1
2007
Source Publication中国有色金属学会会刊:英文版
ISSN1003-6326
Volume17.0Issue:003Pages:595-599
AbstractNanocrystalline CoCrA1Y overlay coating was prepared on M38G superalloy by magnetron sputtering deposition. To investigate the oxidation behavior and phase transformation of alumina during oxidation, the oxidation experiments were conducted at 1 050 ℃ for various time in the range of 5-180 min. The phase compositions of the oxide scales were investigated by using glancing angle X-ray diffraction(XRD). The microstructure analysis of oxide scales was carried out by means of scanning electron microscopy(SEM). The growth process of metastable alumina at the grain boundaries and transformation to stable alumina were discussed. The results show that at the initial oxidation stage the mixture of δ-Al2O3, γ-Al2O3 and α-Al2O3 is formed on the sample surface rapidly. Especially, δ-Al2O3 and γ-Al2O3 prefer growing at the grain boundaries of CoCrA1Y coating. With increasing oxidation time, δ-Al2O3 and γ-Al2O3 transform to θ-Al2O3, afterwards θ-Al2O3 transforms to α-Al2O3 gradually. After 180 min oxidation, θ-Al2O3 transforms into α-Al2O3 completely.
Other AbstractNanocrystalline CoCrA1Y overlay coating was prepared on M38G superalloy by magnetron sputtering deposition. To investigate the oxidation behavior and phase transformation of alumina during oxidation, the oxidation experiments were conducted at 1 050 ℃ for various time in the range of 5-180 min. The phase compositions of the oxide scales were investigated by using glancing angle X-ray diffraction(XRD). The microstructure analysis of oxide scales was carried out by means of scanning electron microscopy(SEM). The growth process of metastable alumina at the grain boundaries and transformation to stable alumina were discussed. The results show that at the initial oxidation stage the mixture of δ-Al2O3, γ-Al2O3 and α-Al2O3 is formed on the sample surface rapidly. Especially, δ-Al2O3 and γ-Al2O3 prefer growing at the grain boundaries of CoCrA1Y coating. With increasing oxidation time, δ-Al2O3 and γ-Al2O3 transform to θ-Al2O3, afterwards θ-Al2O3 transforms to α-Al2O3 gradually. After 180 min oxidation, θ-Al2O3 transforms into α-Al2O3 completely.
Keyword氧化反应 相位转换 CoCrAlY合金 合金包覆
Indexed ByCSCD
Language中文
CSCD IDCSCD:2827758
Citation statistics
Cited Times:4[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/148461
Collection中国科学院金属研究所
Affiliation1.中国科学院金属研究所
2.School of Materials Science and Engineering, Nanchang Institute of Aeronautical Technology
Recommended Citation
GB/T 7714
LIU Guangming,LI Meishuan,MA Jinghui,et al. Transient oxidation behavior of nanocrystalline CoCrAlY coating at 1050℃[J]. 中国有色金属学会会刊:英文版,2007,17.0(003):595-599.
APA LIU Guangming,LI Meishuan,MA Jinghui,DU Nan,&ZHOU Yanchun.(2007).Transient oxidation behavior of nanocrystalline CoCrAlY coating at 1050℃.中国有色金属学会会刊:英文版,17.0(003),595-599.
MLA LIU Guangming,et al."Transient oxidation behavior of nanocrystalline CoCrAlY coating at 1050℃".中国有色金属学会会刊:英文版 17.0.003(2007):595-599.
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
[LIU Guangming]'s Articles
[LI Meishuan]'s Articles
[MA Jinghui]'s Articles
Baidu academic
Similar articles in Baidu academic
[LIU Guangming]'s Articles
[LI Meishuan]'s Articles
[MA Jinghui]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[LIU Guangming]'s Articles
[LI Meishuan]'s Articles
[MA Jinghui]'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.