Effect of silver addition on surface morphology of Al2O3 scales during oxidation of beta-Nial

IMR OpenIR

	Effect of silver addition on surface morphology of Al2O3 scales during oxidation of beta-Nial
	Zhang, XJ ; Wu, WT ; Niu, Y
通讯作者	Zhang, XJ(xjzhang@imr.ac.cn)
	2005-04-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	41 期号:4 页码:369-374
摘要	The effect of adding small amounts of Ag (0.5%, 1%, 5% and 10%, atomic fraction) to beta-NiAl on surface morphology of alumina scale during the oxidation at 1000-1100 degrees C and the oxidation kinetics of beta-NiAl and NiAl-lAg were investigated by TGA and SEM/EDS. The kinetics of beta-NiAl presents two parabolic stages controlled by the growth of metastable alumina and stable alpha-Al2O3, respectively, while the kinetics of NiAl-lAg is composed of three different parabolic stages controlled by the growth of gamma-Al2O3, theta-Al2O3 and alpha-Al2O3, respectively. The addition of small amounts of Ag (<1%) to beta-NiAl favors the phase transformation from metastable alumina to alpha-Al2O3, while this effect disappears for an Ag content above 5% at 1000 degrees C oxidation. Finally, the addition of 0.5% Ag to beta-NiAl does not affect the surface morphology of Al2O3 at 1100 degrees C.
关键词	beta-NiAl Ag high temperature oxidation Al2O3 transformation
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000228756900007
出版者	SCIENCE CHINA PRESS
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/82093
专题	中国科学院金属研究所
通讯作者	Zhang, XJ
作者单位	1.Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China 2.Shenyang Inst Chem Technol, Coll Appl Chem, Shenyang 110142, Peoples R China
推荐引用方式 GB/T 7714	Zhang, XJ,Wu, WT,Niu, Y. Effect of silver addition on surface morphology of Al2O3 scales during oxidation of beta-Nial[J]. ACTA METALLURGICA SINICA,2005,41(4):369-374.
APA	Zhang, XJ,Wu, WT,&Niu, Y.(2005).Effect of silver addition on surface morphology of Al2O3 scales during oxidation of beta-Nial.ACTA METALLURGICA SINICA,41(4),369-374.
MLA	Zhang, XJ,et al."Effect of silver addition on surface morphology of Al2O3 scales during oxidation of beta-Nial".ACTA METALLURGICA SINICA 41.4(2005):369-374.