Rare earth effects on adhesion of Cr2O3 oxide scale formed on surface of Co-40Cr alloy

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	Rare earth effects on adhesion of Cr2O3 oxide scale formed on surface of Co-40Cr alloy
	Jin, HM ; Zhang, LN ; Li, MS ; Li, TF
刊名	JOURNAL OF RARE EARTHS
	2001-03-01
卷号	19 期号:1 页码:34-39
关键词	rare earths adhesion oxidation acoustic emission Raman spectrum
ISSN号	1002-0721
英文摘要	Isothermal and cyclic oxidation behaviors of Co-40Cr alloy at 1000 degreesC in air were studied. Scanning electron microscopy (SEM) was used to examine the oxide scale formed on the surface of the alloy. By comparing the oxidation behaviors of Co-40Cr alloy and its 3 x 10(16) and 3 X 10(17)Y(+)/cm(2) implanted specimens, it was found that the resistant to oxidation property of Co-40Cr was greatly improved due to the implantation of yttrium. Acoustic emission was used to study the distribution of defects at the interface between the scale and alloy. Raman spectrum was also used to study the stress status in chromic scale formed on the surface of Co-40Cr with and without yttrium. The main reason for the improvement of resistant to oxidation property of Y-doped Co-40Cr probably is that yttrium can segregate to Cr2O3 grain boundaries and change the scale's growing mechanism and mechanical property. Most importantly, Y-implantation decreases the size and number of interfacial defects and the residual stress in the scale, and remarkably enhances the adhesion of chromia scale with Co-40Cr substrate.
WOS研究方向	Chemistry
语种	英语
出版者	INT ACADEMIC PUBL
WOS记录号	WOS:000167546500009
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/111740]
专题	金属研究所_中国科学院金属研究所
作者单位	1.Shenyang Univ Technol, Lab Corros & Protect, Shenyang 110023, Peoples R China 2.Chinese Acad Sci, Inst Corros & Protect Met, State Key Lab Corros Sci, Shenyang 110015, Peoples R China
推荐引用方式 GB/T 7714	Jin, HM,Zhang, LN,Li, MS,et al. Rare earth effects on adhesion of Cr2O3 oxide scale formed on surface of Co-40Cr alloy[J]. JOURNAL OF RARE EARTHS,2001,19(1):34-39.
APA	Jin, HM,Zhang, LN,Li, MS,&Li, TF.(2001).Rare earth effects on adhesion of Cr2O3 oxide scale formed on surface of Co-40Cr alloy.JOURNAL OF RARE EARTHS,19(1),34-39.
MLA	Jin, HM,et al."Rare earth effects on adhesion of Cr2O3 oxide scale formed on surface of Co-40Cr alloy".JOURNAL OF RARE EARTHS 19.1(2001):34-39.