Influence of yttrium implantation on oxidation behavior of Co-40Cr alloy at 900 degrees C

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	Influence of yttrium implantation on oxidation behavior of Co-40Cr alloy at 900 degrees C
	H. M. Jin ; T. F. Li ; M. S. Li ; J. I. Shen ; L. Xin ; J. Y. Huang
刊名	Journal of Rare Earths
	1999
卷号	17 期号:1 页码:34-37
关键词	rare earths oxide film binding energy ion implantation cracking
ISSN号	1002-0721
中文摘要	The oxidation behavior of Co-40Cr alloy with and without yttrium implantation was studied at 900 degrees C in the air. Scanning electron microscopy(SEM), secondary ion massive spectroscopy(SIMS), transmission electron microscopy(TEM) and high resolution electron microscopy(HREM) were used to study the forming mechanism of oxide film on the alloy. It is found that the binding energy of Cr on the alloy surface is decreased by yttrium implantation, thus the formation of protective Cr2O3 film on the substrate is accelerated. In the mean time, the binding energy of Cr inside the oxide scale is increased by yttrium implantation, and this would reduce the Cr3+ cation diffusion through the film. Yttrium implantation decreases the grain size and the growing speed of oxide film. SIMS and TEM/HREM results show that some yttrium exists as small YCrO3 particles at Cr2O3 grain-boundary near the oxide/gas interface, and a few small Y2O3 particles exist near the substrate/oxide interface. Besides, yttrium may also segregate to Cr2O3 grain-boundary as Y3+, reduce Cr3+ cation diffusion and change the mechanical properties of the oxide film. The ability of anti-oxidation of Co-40Cr alloy is greatly improved by yttrium implantation.
原文出处	://WOS:000079462900009
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/37387]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	H. M. Jin,T. F. Li,M. S. Li,et al. Influence of yttrium implantation on oxidation behavior of Co-40Cr alloy at 900 degrees C[J]. Journal of Rare Earths,1999,17(1):34-37.
APA	H. M. Jin,T. F. Li,M. S. Li,J. I. Shen,L. Xin,&J. Y. Huang.(1999).Influence of yttrium implantation on oxidation behavior of Co-40Cr alloy at 900 degrees C.Journal of Rare Earths,17(1),34-37.
MLA	H. M. Jin,et al."Influence of yttrium implantation on oxidation behavior of Co-40Cr alloy at 900 degrees C".Journal of Rare Earths 17.1(1999):34-37.